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 0xc2a6a130e40a5d007d4955d44133c8be7e3f50c4a11061c49403ebafcc8a28b2. 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/92dc4f0e-a1b7-44e6-8f1a-79eb8d303a0e.json and https://artists.proofprofile.net/proofs/artist/92dc4f0e-a1b7-44e6-8f1a-79eb8d303a0e.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 0x2a12ee9fedb5408683882001b69639b4b1250487f306db5f08ba93c2eb618e46. 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/ART0G1801446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a12ee9fedb5408683882001b69639b4b1250487f306db5f08ba93c2eb618e46. 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/ART0G1801446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae98edc34e76d06520e3a7489318ac4922771e54330b088fcd9624d52dd8fb83. 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/ART0G1808994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b9f382654ceeb4520199c79b5d1ddbf67ed39d53b0f781a0c1929d694610a8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ARIXB2313200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad9ec2ad1a1665910890f0928e5a0990a1fcac9e907f98059d68e484b93b664. 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/ARIXB2313202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9652cad59393f405f6d3edd9ba736d9980e00f8cbdb05666a18bcff7ac56626. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/ARIXB2313207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79ad64dd5ce95100b646ec40d41e829cd7ca1a760f2b6b76eb9266de5887633. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ARIXB2313208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e0e9d6296bbdc9ee829b1408aed72218809ab0f1546a2a6cb4a562166c5c66. 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/ARIXB2313209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b9f382654ceeb4520199c79b5d1ddbf67ed39d53b0f781a0c1929d694610a8. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/ARIXB2313200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad9ec2ad1a1665910890f0928e5a0990a1fcac9e907f98059d68e484b93b664. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:57Z), 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/ARIXB2313202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997f8b60db1f13f17dd044dfc526c4b8b96d9670cbe3ae01247313a8af90abd9. 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/ARIXB2313205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9652cad59393f405f6d3edd9ba736d9980e00f8cbdb05666a18bcff7ac56626. 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/ARIXB2313207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79ad64dd5ce95100b646ec40d41e829cd7ca1a760f2b6b76eb9266de5887633. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:30:19Z), 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/ARIXB2313208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e0e9d6296bbdc9ee829b1408aed72218809ab0f1546a2a6cb4a562166c5c66. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ARIXB2313209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98f91b183d11e8fca07e3168cff54aaa8a732de8904d0904fa4286adf4c7b2e. 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/ARIXB2102973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae67e11708776e130c21c4c59240c32a26ef60567f748d2243ee925420302e4e. 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/ARIXB2102974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a230e3cb17266204bcdec0817488412e2c89600c24486d2a5245984359c0d95. 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/ARIXB2206464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a230e3cb17266204bcdec0817488412e2c89600c24486d2a5245984359c0d95. 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/ARIXB2206464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a02deded2c5725dc88936060074eba3e5013e6d0d69665b8772cd88e025388. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ARIXB2306021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b307da94bcd64ead03025e80ccef7d122cc45a8581ecef65cbc308c1c976e40. 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/ARIXB2306022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efce4c13cc0cea411cbb25a8bad8580575ceff76b7afd00b8c0763ce0374b72. 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/ARIXB2306023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60c86331adb5a943ab0f663536ccb34263019ea770bd8084277a22634ec64b4. 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/ARIXB2306026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe449b10889d6e699eebbb41f48abf907ddf38f357e37f5e2544234ae085a0bcd. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ARIXB2306027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1244f3854a047337b9732de8922588475a50fa37dac99921036384d82f9a3c5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARIXB2306030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7b5cd6a6bd86924d71b66c6b15a293460d7424cc10ae003e4e82c68012cb7c. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ARIXB2306038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c8cff71c3c54d5482f1f31ca1933d09404b94700b19b1912671033c635a31c. 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/ARIXB2308181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c8cff71c3c54d5482f1f31ca1933d09404b94700b19b1912671033c635a31c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ARIXB2308181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f934f2db058411092440a95f34271027401b9eb06a197ca6606c5a832bc2f06. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/ARIXB2312386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f934f2db058411092440a95f34271027401b9eb06a197ca6606c5a832bc2f06. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/ARIXB2312386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd02759463ca8a189d5ac901513a88621ec24a092dbdb7c01157a578a644c50. 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/ARIXB2401138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd02759463ca8a189d5ac901513a88621ec24a092dbdb7c01157a578a644c50. 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/ARIXB2401138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79f3b4c3df8bab71b09de51b7007d2fb49e444f95babae02688bddca90d0b42. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/ARIXB2401305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79f3b4c3df8bab71b09de51b7007d2fb49e444f95babae02688bddca90d0b42. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:53:21Z), 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/ARIXB2401305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9835f266e388cddd2686eafba82079e3568af19a3974d2c8d63e71ae3818dc. 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/ARIXB2401304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da64e0ff50cd725a30681d244f1e349092774aa4c5e6b4ccd872f15843e03e3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ARIXB2401745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da64e0ff50cd725a30681d244f1e349092774aa4c5e6b4ccd872f15843e03e3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARIXB2401745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c840a7804eb6fcb5648feb589b2331055f8961f1366a973f56ea5bb19239131. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/ARIXB2403320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4093cd2b5d6e3ec365572e65f7641eecdfed104341bfda67963046f02a4475. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARIXB2402735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8d55c565b187387242bf096b8c09d578e043e5cd2db87d3fd441b6ec84632f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ22B1748082.