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 0x00025b77a42e491f1bcb0cb9cd7a0ef85acd7443c46b758836c17773bdf76790. 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/c7dd1720-eb85-4ad6-a54a-d340ded47dea.json and https://artists.proofprofile.net/proofs/artist/c7dd1720-eb85-4ad6-a54a-d340ded47dea.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 0x1bfe94dd02af591daf3ff7e86f8acd45276b2ea36163f8157dc554e29acf0d26. 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/JPI100200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7d3d26147bf44c2c1d708366595f059e6db1f0e76ace57e5b73d4141b855dd. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/JPI100301819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0120c745871869aca5a232057defaca74d255dbff61de2f53707bd68d0cd7bb5. 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/JPI100401261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7d3d26147bf44c2c1d708366595f059e6db1f0e76ace57e5b73d4141b855dd. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:49:02Z), 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/JPI100301819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232e0e4ea78ad3aacae8474cec91acbc211c781a5b451c4f928f5644af58e340. 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/JPI100302263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe063a55c2c8a64282e19391e8b3d9933865943eedbf2ad3c85cfe3621135dd7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPI100300629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665c922c992c6e0ab35650fc6d45d52f8596b285422db07b3094beabac504970. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:16:56Z), 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/JPI100300630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfe94dd02af591daf3ff7e86f8acd45276b2ea36163f8157dc554e29acf0d26. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/JPI100200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c3d860067116e386f0e221a926795d6093bc59461a61a44365c643780b7a39. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPI100501220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b877aec6e4f444bb8e598ff6c795a2a30edee0e5a1d5b056fdc5d8baf629252. 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/JPI100501705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf450a4b240dba56933353b3725b503b5b42f40bf7a6a2cc3973bc012ea787c74. 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/JPI100801397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66cce0b0d628049bb63377f3a63aa362ea3ab3822361b2e46bf0fabef902d6c. 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/JPI100701285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a52c5ba7287928cac8fc60578a0b7805407b6cddada1806b9d8fe615df10b4. 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/JPI100700550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4552d1bb619d4777441332ff2498803e8c7566f5dd8986117d15f1ead760727e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:19:44Z), 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/JPI100602032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93827f061c77fdee6a47c653bba833790518d562009682472ef3f3e0539b4857. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPI100902466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93827f061c77fdee6a47c653bba833790518d562009682472ef3f3e0539b4857. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:44:49Z), 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/JPI100902466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd21a6fca0a196a5dabd0908e17ea672e2875b384216a2ea76e83c85a48017e1. 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/JPI101200525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a01b875c2b3b3b35d51b8cbf62c626d3e6c65d1db919af9d9d8527e826345ae. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPB601233701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffd5de6d1a9c5aaf4789d65fcaa81db31053f30d38169516116131f5bd5cac3. 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/JPI101202240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab2d8c68fa336c8710e85dbb66ce556da4dc7d7d35631486d46e2bca8146913. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/JPB601270228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7258f2c86d30941936cdfb191515dcfae79f11dcc114cd3aca4b102e15334df1. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/JPI101300882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab70f9f49758c620e7af3f1412cf8b323155278ef3a069915b840393decd46a. 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/JPI102101867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ad354d4e14f0ed01a17ba936be99d8f4bcafc18674010550ab39f960d636dd. 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/JPI102202231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9892f78c468affb354a838e69dfb26a6815c3a6b3b7a7a11d1168eb60d3125c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCJPL2521546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c04febf18ba2cc28bb0583f44948765926f7c11913e062752609dc0938a0b0. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:47:57Z), 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/QT66J2572899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613fdd677adb6c42426c563e82d7097bac160126ddc318964f8740a018730584. 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/QT66J2572993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c21f764b886403b273f10deecc1f5b6b7eb66073d7dff77b56f4fcc0b756c3. 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/JPI102202419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5c541cb29c40905f1256469de878b81260d1316eca8de25b05bbb845f4453e. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPI102202421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6957d8ecd425b63752342a3e485717a14194f67c38f2e695075ab5a1537c53b9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPI101101736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfaa5b81ec12a0e92d27205919d03654a009e6dc10f2c2e5527b94084df6482. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JPI101101737.
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