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 0x2aef19fd06fa4ea576d7011e8bc57a65196dbc1e794995c9ffbcfd6b9458e62c. 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/c9f98894-7826-4a6b-9aaa-74401c9282ed.json and https://artists.proofprofile.net/proofs/artist/c9f98894-7826-4a6b-9aaa-74401c9282ed.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 0x9ffaf69f1b17a47d3a92f7a657f5483af0151c3b6170983e07b7674af7ea6310. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:16:35Z), 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/QZTB32347879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09e98f3230a391737bbac2044c0cf04bcace117460b5a482d8f5f69ad4a6c46. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB32339162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe057391893bd1fa640f0eda9e9f017d72b00851df8a1b8dc63e5934e12aa1927. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:29Z), 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/QZTB32339166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9112ebded869e39d8b02057ce775d00861a5f104d5b26ce0d07471ad3376d5. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZTB32339163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008adb068252ae5c418af09b4640c8d047a733e76df8f3aace4f9b2d9a0985de. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZTB32339164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17966ce2d342345238f6be86a00fecc5bd1843d3ea531e8ebdf7d3299a64b115. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB32350718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b0920476a78877202f020de8c99cfbc594c26f28dc450d0a3d3b39036fddec. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:51:16Z), 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/QZTB32339161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d89f6ad03c670fd4504b79242e6eb27c0d863e2e1dae1e6424e21e273cd0cd9. 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/QZTB32350654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d1c3b47752bf9f316e613a733fc5e97ae5af513339048983b2438a913546e0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTB32350747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42db5f263b1f2418993b8fe0c57152f43d25600d4338368f25b9c33eaae799a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTB32339159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99283b5e3dcfce04502c1b941e9f90cca2d30ed3125cee5bf867127dbe28f0e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:16:52Z), 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/QZTB32350666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a02671d094b7bf1ebc6b0fded9931e854dd80be0664fe363cc221dfb9a5352. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZTB32350781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60211a71b20b29dc8404a0ce8e82a1f0f4281f046d2ac4ce47778eeeb4e1875f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:52:50Z), 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/QZTB32339165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8d528f033525c33780a9ee43b561bace091822d64b52ecdc6df754b19f223f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZTB32368378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32927729c52b6482dfeacdc58c765f569ad8939acc0651ab3e0b24fe7b224f09. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB62310846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32927729c52b6482dfeacdc58c765f569ad8939acc0651ab3e0b24fe7b224f09. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTB62310846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbda3b34e446c8ec54765334fd381b8883f4cd8b98395e2db3f6cee72ce36273. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:15Z), 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/QZTBC2354181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c10c6169e50d7806f2b574fe1cff8490463fad0d1491eb9d6e0187c3a12a30. 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/QZWFH2360988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071645d284ed2ba8da6bec4bb51f4a3750ee703c1ea9f3c4c7c9ca18c8ccb841. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFN2314550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3da9f1d509e32b8760a4663d74cf77797652dc25ff0a82bba435ae695d8c5ea. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:17:08Z), 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/QZWFR2338964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a9206f2016351d021fcd9035621b3e59785723299d1c80b4cc4554064235b4. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZDA72413142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84964f0f3e11be6ee1ac61074967222eef365381799bd7269e61fb12962ad276. 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/QZHN52485119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553bd0509c87b9b30bf6d40f877722eef25bacc6af6c369428a1439742e7278e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:36:14Z), 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/QZK6Q2459409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc523492fb1b93b15637cc5222f169aff59818eb7da9a523097c96f7bf8b498d8. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:36Z), 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/QZMEP2406595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6122504f6f820fb272b93f58125b4c99bf13ad31075d73e1f6faabfb67a723d9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZMEP2407289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0710557b047ef44816c6833cfe708ac13b44ba32701c7cba2ca9866fa470871d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:22Z), 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/QZMEP2407417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb019b8f565154ad33a165326a6d3b9fa8df7db7f0b8921f0c05e204b1b2ed0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZMEP2407020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cae982288ee5d6c0f62f68bfe7c8bb4bd3f3139e2d8c51702778142528f04cc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:43Z), 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/QZMEP2407453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2f14e3ed4068cc20849f098585baedd6088fb339dd168950f7f36b0289a488. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWW2498533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582c50bf4cf1b6c94a20ef9bd9e2f22ddf2ba8056fed257e7ba840388d60f366. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZWFH2467627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5050ec88888d8a7dea4189f19a11f43e1fed8f77263f9c3ec3e81766007d540. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZWFU2474478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb2faef1a66cde28fad07559cf7b0934d300dcc651199d7711380ad4fff0085. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZFZ22563195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a01af9999d16b77a1e36145bc676df6bd89bd8ba7e8a1a7095ba9c61698ea5. 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/QZFZ32518310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6a5a10221515bbf24480bda969a615f82fe8b882e793fd2c79317c9dd39cb7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZFZ22564405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d9f4f5f942feb43afac9b2bd1130f1dcd572ff81f7f3dc29ed74d1d31ba322. 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/QZDA42538044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe474e6d8e2946403b7557217e31219ea031f40604f921d866a2a35849b8a2f65. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA42520967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf2ab266018c941cf877e913babff85ad5cdfe1258840bb3f284acd7abb7715. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZDA42524358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e29dc30620981978eaebc9434f0b24e0b42a4617cc02e7b558536528a1f45c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES52503504.