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 0xf3f6cfc90fafdf136d134f562722e43167e3745527a474e3c22588b7f81fb207. 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/74b96f46-d921-41c0-9a4a-7f3ff859a215.json and https://artists.proofprofile.net/proofs/artist/74b96f46-d921-41c0-9a4a-7f3ff859a215.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Around the World in 80 Days (Original Motion Picture Soundtrack)
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 0xbc0c899843d567d3779af8a985832e8bccadd005de762b1a3eb29e5eb6582cac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR3X62301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0057ff2d7917182260709f289eb55661320efe524296d8754cc18c158394d69a. 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/FR3X62301002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20d8d612b79af4ae0d345a8c20150535fd1de62321a975a200ee590c3d95460. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR3X62301003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea155ea5a2f6e096518bcba465529f2412834fce0cb9df985cbfd8ef2d2e937. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR3X62301004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1904fe0a26944b6dfc2a230a947629d5309cbdf96f9eabaa8954b25d7401b17e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR3X62301005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f433a570257e8832d7bf4673665ce3fc36ad2a43192dd55646cbdd519cf8c6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR3X62301006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3081726e487b3f64351e230a5c5b7ecc6c8fe519b32bb9cfe4a8f452c7e05e48. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/FR3X62301007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5c8a0ad260e0abeccb0caf051a85b91fd24df22ea4e9889be02a59623841ef. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR3X62301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bc53a7e961fafaa8349645d6755ad77dde339d44d9e4a4df04fa34e8302a4b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR3X62301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cdb2949642df2db0d90952a27b0fd3f37ebc638b3ad994fd4d1dc8ecbbfc82. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/FR3X62301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe735383597ee89da18268c0c09e2988400098afdf5f2b640719208bc12813af. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FR3X62301011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a42738e27dd4425a4cef5385a70d2210577d1fac235ebb104840f1b203492f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FR3X62301012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969ddf3d78d7286b29a3be8d33b2ef57a87c8fb5f1fd3721e57b04f4934e1559. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR3X62301013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd197701d3fc6fb1b26822977fa799ca9f7772ec12da1793991d309eed48d5647. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FR3X62301014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961e46b43ddef47f34cf910c348e36bf7679e9727842d2063359ef2443e95582. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR3X62301015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd37deb027606f125fea95291f2f1fef589bbf7914f448d464ba7733155aeebf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR3X62301016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9f81f6f96d5f19f50e86306db6b6ccf62c7e98946818a63d83212314db241c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR3X62301017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d10f203b893c7e061a822e7ae9e98112963b8efcadee9b7faa1acc88c2a070c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR3X62301018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb1ce913216f9c5c9df5f350d01e1244356d1987d5dd66957dc39183c15699d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR3X62301019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef076746f5afb637d5a45a2c9f0c0ace187ef1e57f045e89492bae6c7ccfac9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR3X62301020.