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 0x103c5ec693f276690226fe4504c3d2233a459a7dc11046a43501173ac0d8a1ae. 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/42da0198-db00-4533-baaa-dc42eddcb760.json and https://artists.proofprofile.net/proofs/artist/42da0198-db00-4533-baaa-dc42eddcb760.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 0x67bebc47e65a92e1714734e55718acdd1f38ea776021bc8252ac17949e87b0fe. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/AUMEV2443004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e953d7eaedec81715c2d4202420ed60e085d6aa7cb1f4236833f520fc264894. 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/AUMEV2443005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9094471926e2e6c7cfd6a08f9e7335561d724d63b80833ea8ad3d74766f2baf6. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUMEV2443006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a1f01595896564e8f04f37fd8db061c1d0c00fdfe7b96fb7a28a1a049a002f. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/AUMEV2443007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec06f811d91cb39f010e972f02cadcfd0bc61cc5068e62ded103408e556ac37. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUMEV2443008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0463e22d97e15af22d300a99905f78dd58df42ab5060487b2f2734784e994d77. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUMEV2443009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01525a705e6b6bb175d5352818f2c29dba05c34568b553fd02d840569ed185a0. 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/AUMEV2443010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530dd9c9e14eb5d3025fea2b3048e7fe0d7ed56b5a287626101a8d7bc8511703. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:17:14Z), 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/AUMEV2443011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce7999fef0a397b640c2234260c933ce4874de730bee41a76840ae54f2fc2f7. 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/AUMEV2443012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18628f824c0e47e915bdc7730b9a02d74490460e07c892b1432b6d3297fc7def. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:10:26Z), 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/AUMEV2443013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040f42011c8f60faf7f715f6c4b3f7c3cd818cad1da9bb493470e58f7a493786. 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/AUMEV2443014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafbbd8f101c5407f36ad70dc7043c73191f58331e15ebca01263319ab50e77b. 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/AUMEV2443015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7139de5bc9a648173f722c33e8954e52339e50ec8121309ad3395c0516e4060c. 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/AUMEV2443016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823f5196599389af5d2f8470270812aae4b7b16ee9ec5a1ba9869deb0655a44e. 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/AUMEV2443017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e770b3bbf487572c9a6dd65baeb85c11673de1db547ddbdc206074d32bbe89. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/AUMEV2443018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869d3d20aaf34fbfaea75bd98a12c229ee54b2b54306ad6a9e63db25d4465907. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/AUMEV2443019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dbb23e2c24c116f593947d5e9c7d34845e544b751d7d948fbf3d75b14c3043. 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/AUMEV2443020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92a9f833f3ffaa92d8ba1ee9e21d779aa1620748e44c6cd1e5f8711a5769ed2. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:23:24Z), 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/AUMEV2443021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c14a317388436c95103daf15d93d1294c2d52faa45c66e81f36595ae2113ae2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:45:32Z), 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/AUMEV2497559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049f986185a03780b8c0f9cd23376306f757d3119353343a36480b7db662c0c1. 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/AUMEV2497912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3683e5631d24732e0ee141b5f168310fd6cd19ed539b2e6f715646d50792751. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/AUGBT2402327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5969b35a669076979d168d61598ffb32312159203a163baf341e4c87006210. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:28Z), 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/AUGBT2402325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f42f6f4b2af3eea44bf389c258e343e21851b140fabcffba334cd69e5c23546. 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/AUGBT2452588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002f3e92b8ee15dab5d349963bef713d06f581e038e2fc0faa0c8296ba07c7e8. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/AUGBT2452598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319da679d2043f103ceb3f671945fcebfe78429899d3fed96a3b009ea9933190. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUGBT2452616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a10e63825dddd1bc5ce070e6b2f948cb284135d35cb30660e5af0b6bb9a66d2. 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/AUGBT2452620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b4c9effb0b4d2fd83de52e147a746dad2b6f27378d5e8830c442ccc91b2c16. 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/AUGBT2476288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2106041b2efd54b7d808b2a2f5ef5db08dbfceea7dff3ec22f0a5aefe59670e. 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/AUQ9D2401132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621bea44b07565a9c971ae0fe0d661a10738d34290cddd14909a4185bb57af42. 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/AUMEV2534863.