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 0xf4bcf0a387000cc8af5bf011b2adad83ebc4f14bf24257a01f51daac945cc364. 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/80806765-4193-479f-b234-3feee060bc5c.json and https://artists.proofprofile.net/proofs/artist/80806765-4193-479f-b234-3feee060bc5c.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 0xd0056886328bbd526f59985ad16b4100f7671f8f02be6be8dbb200c132447910. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GBEEL0702011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809d243514e32f1a94a5f3d10c67b59e8b098c004d072025f5011b6836c8ce59. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBEEL0702012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcf7970bbddc731f601867cc009a2ed0c34db8b30b218dd6013fa1097af383e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBEEL0702013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22a5fee1b1ccddf3c056103e67e603caea4ceb437cfee4b17878f90cbb270fb. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/GBEEL0702014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd03b824840d8a399b51972a1b8aea5a5e655bb03802a487df0298e6aa25141a. 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/GBEEL0702015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca367ab3fdf4b220dd04399b173975429e56e5df31616ce401c0709ec3828472. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBEEL0702016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3833469da6306cbccc2ff1e3220ae9454fdabc3532d8ab2c58720f54409d8bc2. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GBEEL0702017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b9f2c8fe8733f1f29dbbe6fa76c40e1d309c8c6d6ab2500081c712fe5fe82e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBEEL0702018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ba44628315f47ce4751616fffaa8a90e425ac885ae8e5fe545e90be27da909. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/GBEEL0702001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b45f96ea6d17a8a62ed1daf2c0f453eb0137e07f41bf642f2deee2750dfdbc9. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/GBEEL0702004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491adcc68ea55509d22b9e7efc05c426ba1b1b40d76c1258042d64752fdeb650. 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/GBEEL0702006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0762809f2d074fb10d07bc09f3aa3a9094cc5d03b5b89334569df6e1e6ffda6d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBEEL0702007.
The Overture from Pigdom Come - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8af7fc3a5ec1aaa097690148b2562f2d95848b74a394b1818c4bd4f3009bd9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/GBEEL0702008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53b41b7a33ca6f81d94d3cb16dcc60a468b671598d84a62f06bc0fe3a0461c5. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GBEEL0702010.