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 0xded6ce48254a9f3bd35e9766fc7ac0a06b6f6c9a7b45ebe52cad4e7df5b9a7d2. 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/051bbec7-7f81-434e-8dbd-f42925ae85a5.json and https://artists.proofprofile.net/proofs/artist/051bbec7-7f81-434e-8dbd-f42925ae85a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Next Thing (Live at Barnett Recital Hall)
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 0xd97c4f7e2d68daf4fc358465b186a5500f7ff5adc4ef7c9d59ed2b340101bec0. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZMEM2169834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bda2a8b29442e838045fd34518b273c9be867b9730b5a5947212cdfa0abe81. 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/QZMEM2169835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207cba4833b89c946111969ca0b56c7161330c3db9bdf2dbbd6afe3db3a8f7f1. 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/QZMEM2169838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09de9bca612b819f97e040a1afd6d1b543371879ce58cc493b1e4329cb54ffc. 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/QM24S2302325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b33e2001614817b75eedbcd8ba5df100fe760714e621a705cea5e012ce9d967. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QM24S2303590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4977065ccd21f1f75d415b642c5244b0f0131b1367929a879239ae22e172111. 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/QM24S2308577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd41b6858ff72b9a906865ad759bf1611131d497e23b854419f69a8c093caee4. 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/QZTV32503035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd41b6858ff72b9a906865ad759bf1611131d497e23b854419f69a8c093caee4. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZTV32503035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd061783f7ce2941c922d28aed51cb81360622303abd3cee05cb104abcd7a2fd3. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZTV32594767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d167b15f5bbafa205ea8b47b2b56b59acfe742b56859cf2f73f07f98d507a2a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QM24S2401077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf870ec62e1968c09cf00c781a658b822c6108f7aa8c33046f1a4faabb5dc366e. 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/QZTV32594774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4977065ccd21f1f75d415b642c5244b0f0131b1367929a879239ae22e172111. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM24S2308577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef54f171d4c11410df9390a02ff575035847f4e04141bfb8e3c310ffd469ab7. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/GBWUL2547419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d3db11d142839d0074001070d80069ec20f3e030a47a0b8fea548b992b4af6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTV32594790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fb2a2b6f0e52be25504148dc552bb3f2305a7c65226f0a35a6051bce9aaebc. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZTV32594792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c152362420971544c3aec3f5db4379028c53028712b776b130e6f2834f25e1. 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/QZTV32594793.