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 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 0x85cb61ee325277e6c6f7d38d97a0d6e76020f18cc63533334c54816b5e50bd4c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdd3f14e-55a4-426a-ba56-84a20b5eac88.json and https://artists.proofprofile.net/proofs/artist/fdd3f14e-55a4-426a-ba56-84a20b5eac88.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 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 0x8c547b3b1ecc8790f714a3f4048f10334587f071b84100ea8e8f3bd3badb0ca4. 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/CAANN1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c2d168833dd8e92edc119864060477e4f8478717c6a360cc6d6b8e104c2bf1. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/CAANN1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f4003e3ed92c3a34dd8de8cefe0c1fc6bdad736d32de2a935cb148341a38ed. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/CAANN2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3948f73d21754f9c9c9314fed70266334bcde64a012ba56d5005104b05cd6c. 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/CAN112300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3948f73d21754f9c9c9314fed70266334bcde64a012ba56d5005104b05cd6c. 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/CAN112300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95099797dc6a9b18c3f03e5ab6adca038ea7e6c48b313951717f72fcb874019c. 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/CAANN2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6b5e9febe32de864a1dc89f4f37f9e458fdee53cd6d933707a17c172ea52dc. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/CAANN2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577d907e835e0a6877e2468cef7d9f25b92e13107ef0ca9e9cb48f7ea3d3b853. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/CAN112300818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca73cfb02eb0ec5842dccf9ca49626fcc08218898d37027935af78f74fa72ce. 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/CAN112300893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac413b7aab810afb74ce7542774920a45f1fb91de285229b33e0e58cde3c930. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/CAN112301273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf782322c1b60af4cfafde2a482a606e4477e4ff3207bb397260d194e941b95c8. 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/CAN112400633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f8f448e7f730f110f5c68a8f9e9a423b5454c6e44da14ff2781d27f2ae12dd. 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/CAN112401196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7533c4f3130410795490796be358b196cac63cad3a6eb54c61ef8b2fbf788c7. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/CAN112401423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4e7438b1de019d96c7f44fcdd9041c278448e6d959379b1d1a93510271c6af. 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/CAANN1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ccd50c6270ee4edf956565d09bf04212928ed76295fd9d42671d4db58e76f8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CAANN1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c0c4af7ccee7409415d839a0f500a6f646872d3137e48bbb58cf2ea9a76750. 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/CAANN1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe47c255d2ae4c48219dd3b90aeff0a134a6e6d09319a8e4346c8a4f8d1bb683. 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/CAN112401977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68460f0bda2693daa8ea43fdedf4d346270f7df7d5174d627d28bd0d1e770138. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/CAN112401978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccf15ae46933f88857b0f8d6bb91df7c631c5d72f4a808531c55300a86c2a8e. 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/CAANN1800004.
Footprints of the Sun - Live Session 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5264e00c6d59c1574b6d54f2f34312bf11109113c9077fdbd7d52c1401fcf3d4. 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/CAN112401979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f175a4df5e9da41ed1e01cfc3a23f7ab1da9a4bb1365595db44a378bd5aa1b. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/CAANN1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37aa2a0a7cd46a1c25ee0bba5f5ca401427ef4589bf6f498204dbc83de4a3c31. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/CAANN1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66d6c3ba88db51c02152919a2d22debbb2e065718e974c9b4cbcf3a60c56f28. 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/CAN112401980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820e778e48f793594494fa30d17408876180fed73f30fb9d0ebbc167ff0cf355. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/CAANN1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaa5cd6f1780e1f0b505970c0b193b67657fb51cdff32637045553af3c53559. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/CAN112401981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c2d168833dd8e92edc119864060477e4f8478717c6a360cc6d6b8e104c2bf1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CAANN1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89826bce3ed00ec7d2d90565dbbeee5813448c56713dd2c812a3f0b19264c266. 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/CAANN1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1461cb2972d2777ba091980c63fd5119f31502ba020bc43074b273f485478ba. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/CAANN1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf084708d8f6c2789b8bff08b049b85679a09e8c3d33247a36b970daded9f7490. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/CAANN1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71764f3dc1cac1e417d6cb378c308c209b548b557419089bf92d45bdf1cd18b. 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/CAANN1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afb780b8dc7da2bd3170ec9ad7e78e27e0a2236bb03e238604ddd9ca0c40f35. 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/CAN112301274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baba319d6c027100737c8b631c6bd33dd73510e8aa659cd7b52de71c3880c0f. 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/CAN112500509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638915aa5b3be7d235c4f492cb59381f2300eb485a063187b16296847800c1d5. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CAN112500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71e36069f35b4dfcca887884ff6074df731ed2744dccd3bafbdf8b6106edee4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/CAN112500511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357e78abd82bad51c64bebeb47abba230112d91c0144bb59fea503c0d92ad4b7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/CAN112500512.
Another Quiet Sunday (Keep Moving On) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebcd289c059f33ab1f6f7ec5301a14cebdb2eb56748c6b258683883f8c867ac. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CAN112500513.
Within You, Within Me (Dream Lovers Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6b5e9febe32de864a1dc89f4f37f9e458fdee53cd6d933707a17c172ea52dc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAANN2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95099797dc6a9b18c3f03e5ab6adca038ea7e6c48b313951717f72fcb874019c. 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/CAANN2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c2d168833dd8e92edc119864060477e4f8478717c6a360cc6d6b8e104c2bf1. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/CAANN1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f4a584c2ab6ec0d011f151e9c04d5adb1ba083fd3976ee7108e3c4357ceccb. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/CAN112501510.