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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 0x6b313fdab883afc325e9fdd7097f49099b6f792839c15ecb61100371c346024b. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51e519bc-783e-41c2-a319-da1093e20e69.json and https://artists.proofprofile.net/proofs/artist/51e519bc-783e-41c2-a319-da1093e20e69.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 0x5b13fb2e94953f5594a85f3267aa7a68c984fe59204900752bc3b839bf563de5. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZARB1811929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfa06e7ea34484ab6e0cf91395edff726df7a139bf828fe32bc21aaea4821b8. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QM4DW1853576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86205e712a25ac510d4980301cbd993dc1b4691680b2b13621871dd102d3296f. 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/QZDA62304533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d9147c892bf6495d71858ba6b8635edd8c0b384759ddb6376c781352840af4. 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/QZDA62304534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cb2a7bf537f9a0142b38db0e1ac1a0ed39307b97fbf1080f2f3c44c1fd1588. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZDA62304535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94c5d4d01fd0bd3c912c34a03a0fc8a0d0a217f6fe6358d75c5ea499770fd42. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/QZTAY2482740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2c527ff297839b9154cce9826dd2b2fdabe496587de5346feadadaabe65eef. 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/QZTBB2428098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97660cf2cb4173828b04f751d7b3b04fe2979846cee811bd129f63f0f7978e0. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZTBB2428099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe307397b614c658e8a57c1fb0357c434939d926b577b908f17717be1200ba911. 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/QZTBB2428100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe09816f365b3bab149e74c001feb9168b6d00d0f94c1091859601ab9595f8ac. 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/QZTAT2267265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a2b7650518f2081a1deec10d7576f6e8291e2e100a9eecdc6807cedd7d2745. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZTAY2244888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497465c0fecf049cac32d3ccd0fabc53a59abaf36258e1345a40ded3ff5e7eae. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZTAY2244889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86205e712a25ac510d4980301cbd993dc1b4691680b2b13621871dd102d3296f. 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/QZDA62304533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d9147c892bf6495d71858ba6b8635edd8c0b384759ddb6376c781352840af4. 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/QZDA62304534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3df9d9160d0a9a924af94a3c1e35c351875f42a8dcc1ff820c0e1e56f33205. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZFZ32301776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cc2f014c1486edd26c5f77f6ccfc8aefb61ebdee9566a56b4dc98aa83c67d7. 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/QZDA62304536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2c527ff297839b9154cce9826dd2b2fdabe496587de5346feadadaabe65eef. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZTBB2428098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e459084476b77be8436b56e51ea2d5d74e9294dccffd6100d90ac828ff23ae. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZNWQ2477540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97660cf2cb4173828b04f751d7b3b04fe2979846cee811bd129f63f0f7978e0. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZTBB2428099.
By the Skin of the Your Teeth - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94c5d4d01fd0bd3c912c34a03a0fc8a0d0a217f6fe6358d75c5ea499770fd42. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/QZTAY2482740.