1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6623ebcc9bd3e5cb5021685c4d5ac003b63468ec64f7fde81a13f6c7fc0fc44d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d27f94bc-2cef-4091-acb8-f65fc9c5d0f4.json and https://artists.proofprofile.net/proofs/artist/d27f94bc-2cef-4091-acb8-f65fc9c5d0f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc601e068cebcb9b089b3294f7483e5bcf26aef8cb35528f5e79bd26673a0f4b2. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB72254185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50b34c355d83f74d5c222de968c878a8516391f31bbbfc008a65a3fb0c430e0. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB72254186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98ce9581c622c5b84e9998b65e43b74ad525a4a510781c847313cb177e9a9f7. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:53:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB72254187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ac27563f1012462b86d1b42bde15d20bbcae4ac0f08eb0b301841ab50aa579. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:37:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB72254188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afe930be168b644d0eaa2b6cd495ae57fff1a89c5c9ce611ad9330815850adc. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB72254190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b41ae09ebd4156c4dd360e5bf9dbca36c6388dcb35b6bb0b790837241df973. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:59:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB72254192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0651d1a1fda7ab2d9f8012f008e984d57388d3b839a4ef1f5f80576c7facd13. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADJ1719020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18632c89b6f1eccb94d8aabe97d024b035387c63a533574ceda47ab3389ed23c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADJ1719022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372eb338fcf1b3ccca52dbc66d987b09eee8d6a4d578392dd3642082b15214b4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADJ1719027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9865415e35f03743f517d748760e002adaffaf1bf3ab053578d78787bd13b6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADJ1719039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846bd3b0d6a01c7abd6f5e1d7ef5994b4ab422c7152590d5d1e9d6d505c984b8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:39:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB52253634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c5d55dc789df77edc7a913486eab6c38295f4f98601481320e3cf2ad8e4bf5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310212d2b658e75fc76d9f4223144b73e7c61f49f4f63f3fd8ad8405f25fdd2b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c36135e114e5210141c9cf4138b1efef23c666ce8e913c94cce649f110e28e. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb0ce183d87954f696195b4499f262d2f43becb412519e4499f18d7b1f9018a. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd2a7d6dbbf561387141743768ca7326cebc9370fab7b7940247366b4554b41. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:25:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d0f1c6c21fd123c168f23ac50001ad39887eaf3571131e78fdb9912677cecb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529f768e03bd25322a08bdf72cda019d1c52929be40de8c64df3ce8973ce26c3. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42230809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395ac307ea53dfdc721e0d9e2d080261264b917cde88d9e7ef8f0e8850a89058. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42230815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73641d072645e0167b8d68f07dff7f4720df255733d8a5a3e6892156f4553f2b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42230818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8db6efe7aabfa0f9b7310ad41cf3182aba8c767ac586801e3c5de9709313af. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:04:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42230823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b88c76ddbf630d430f8edd8e52d0303599498d4f0ae81b81db0a1bdfd8fcac. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42230824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1b61e4053bb62451ec79bbf23ab35ee1dbd0c8a6ba06149cc3845e5b7c2772. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:39:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42230825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c42e971a0979ef288489008cf31c85415c5a49cd83345e9e6561e99237d2b0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42230826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49efe66f7acca9ca51ff0dc25edfaa90c4d7b5bc70c6eee69538a155abc03942. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42230827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe6cd13860643369af7edc9ab88316f834db0cac33eb5316bc7757b0929931c. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42230828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20cd8e48ab1bbccc3e2a83ce0080de36f5212f9178aafa913ad666bb583fb4e. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:35:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752fdc14c36b73f5a4a4407c68deeea6f52a1a8eb0ecf774e4fe0ac5700381ba. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6f7e79cb77d76fcb71a9906ca8608c74cafcc7d071b4a2d5ead2ca8ab2155c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:56:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b289f4470ef1e192c15a76e92bf5fbc951e6f04581a9c3410c65b6a2fc7f779. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461e7a0539189f4c2237b9918a5d53e0d419a0d9fdd3d5819d0d971fc6df2b92. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:03:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fe8461a856b0fa7cb4794514d620e4857c3e6c9e19c3b4abe4ddc0d7201d44. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92256a46ab87e0ed38010b8e61be6f771d7a3dd19b898e0fe3da640b8ce46063. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6c0a10b12f9a8e72a21b379e6bb606860caebb21c87821f161898bd4752fe2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88824b91a9483e2da07e0a9f842bbb2cf88e6f326e5f65ae8ed4a842e30a27a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76761f58973246787d8eaedf9c09a64fe2b0cd7ddea251b5e510be381c39e19b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62217795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c56ade212d594b5526c7f32972d4b52acb43c28bd6916042d3153eb9de09ca4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:03:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB72255703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4c7b9cb4f854110debae196a512ccba5aad87af0fbafbe627513ee8bc4e563. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG1926448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0787ed714556127af80f17756ee52b453d2113c852ff6cf2327d1d91f97feb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2030750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70013a680b8c10e93d5eae3d0c5c072aa60c87cd6f6fa2f0363f1ae04398c762. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2030788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27418ae5adc57e8d3fd6b405e960ac698281d3b97f8a501b6d304686effdfa29. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2030813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4268470f4868c9262620687e65e2c1640e9ea8fd1580dc4ec4e7a5423f0311e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2030753.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa5e5f341ca2f88bbfa0b3d3187f9c8b97106525e57be787493d0d7b6d940e6. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2124842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5030189ac776475afdc8fa282e1c38d9c4cf76002a8d89b5fc21ca5985280df. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2124843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a9f9cca9f4040d7c3ed48f1d0625b227dd4f9ee81436c0d326894b5820979e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:04:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2124847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf68fa6093a24251d448e926a732ea22b4f20990b79efbb01134a71a9ac3e6e7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2124851.
Los Grandes Cantan Con Fidencio Villanueva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd7a1fe9a5e2b5c73518f18151d8080fab1db13190b277d518ecb099fd4c531. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:39:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR0015561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a264cc51136e9ec9b31153fae4f54f9c66d1b48063d680c0df4d1bda3607b1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR0015562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd167e17ff30b309aec4955648ce104dfce698c5b1e93910242cd1f5e438ef3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR0015567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108523e419849c3bc8ffc1e993626f1b295c9b3ae379c2fd228a6208a4ad4e26. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR0015571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4870343bb0f806d50a0168500370690fd5a7d380abb80b58afbc8f2935336dbc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR0015576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906bc83da6e98d1375f3c192c97e866dd7ff3fcddaa72666458ac74f27ce06ae. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR0015577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedad25ea5aec3083b97a162117eeb4b88455deb10eaff9c57b7e246ffc85845a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR0015563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1450bc726da61c5a14d9df8ba269be9628a3fde93c240f2f569a32bdca33f7c7. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR0015233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d332c85e6ff5d5b6a867f617125aa22cf3ff30e8c313e0dc0200cea9aa0a08. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:01:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR0015235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0002cc3180cb43b3301da4ff1bd0e7badb09de9937a3b0575604f49945da783. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2296845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7de5cfd661e1e518c7917cb28b9121501f98ede5a704e3f54a1442bc0fc4693. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2296846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b75293b035f876fbacb8d6c7748507cd9c38a3c39ddfac5fdf228249d398fc6. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:54:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2296848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7293b49821181e3185b6bc89a9dbe4027d06cab08aec7b79ced03e9af34b51. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:36:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2296849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c21a05064419b96f5a913cfd26849dea8347281ba19cf397877b3da44c4a8b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2296851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf9e64f3fd8e3904abb0cb5e4f3e15c87bf104ba775180bf6eb60881710d365. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2296857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154873602a3dac96703f18d5a2e4ac8971c7ce9bf046984d1ec675826f79af5a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:43:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2236494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea37e74d8af891f8bd6fb862f88000f2af468db2eee6bc1784baccdd1a507561. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2236495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd854fa82daa1ba927e5d5b04ea0455d55bcf51d86761243f96cda40492f1d20. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:54:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2236498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2d753e4cf00d6cf89619fa37c177c9abc79c93a224b23bb4a526926fe7c49d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:46:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2236502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89a94e745cabe64ece4cfaf979d2010e0ee3f931f6c8aafc1e403837eced3ba. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2236505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffa7328792ce56830910a51a0a7ee394e12da1585e0d4dcbced39a88cf9252f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2236506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d74b747b1c6b0af021614161675e0f09ba1a0ef7efb9068c689ca266f750a5. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:55:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2307255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b2809119177ee3bb21f38f7fed34b881a1bc0f7aeb0d3907c68a1b3bc7dbb4. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2307254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d74b747b1c6b0af021614161675e0f09ba1a0ef7efb9068c689ca266f750a5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P2307255.
Selva Negra, en Vivo Desde Veracruz, Vol. 1
Selva Negra, en Vivo Desde Veracruz, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a30a4add46cd6a156d2f0a3db50752682b296dfec1c65bfc030658c02b19460. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNFJ2507740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a974e0936dc22ff9847c26f9b01332b71fdf9fa83ab24bebce6c8a21b325f1b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNFJ2509112.