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 0x25b107a6c04c676ae06ab041ca32fe5a1b64b542685a8a1c66c13de7090ca45a. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2ab5b52-9fca-4acc-8e87-befda53c9089.json and https://artists.proofprofile.net/proofs/artist/f2ab5b52-9fca-4acc-8e87-befda53c9089.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 0xb0d1b3e5259b56d13bd7014ebc98bdd410349cf932e0e3f1acd65d4403fe440d. 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/SEYAR1600801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885aa382c33d44100faa9e15ddd728e3368dd4c46c8d4a2fd869bfd0045d29d3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SEYAR1600802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f40f7c1b6265f615cc71214833c1205ed60632c2b9ab5ab46a8d5a440ecbad. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/SEYAR2000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c61e0630cc446bef9ff78081e957d6ae568083632480028949cc20ccb264a4. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/SEYAR2000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80674cd0411df74f0939b8f1fa62f14c389504d93e9ae32390f951349465a80b. 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/SEYAR2000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002f1fd49f5b23e8650ff3ca7e9c7de67614c505dc3a93699a4e490e4c0e4140. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SEYAR2000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938c6cd7469abb6c476c7a95afb3efb8e674e67063a6d59c8a66672e2f8523f8. 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/SEYAR2000206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888258e45386eec7eadece973a40fa5ec37b33303486f11d6147b74671123d15. 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/SEYAR2000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995efe4e21d8c86b0ef6ff6c6c558e9fb0a00109821d558b385cfc2f23f77a76. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GBLPF2503952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995efe4e21d8c86b0ef6ff6c6c558e9fb0a00109821d558b385cfc2f23f77a76. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/GBLPF2503952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae754f5ece94237d0d5c94a9a0a34496c75c0a2ddbf99bf2249cc132cd3620c7. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/GBLPF2504133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541fe0602c83242fe45e43427a04bb0035782b45ee4b9db078772ae3a8edb533. 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/GBLPF2504155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6eb90af8b615fcec651e0a24cb892a2f0e4575c4fd86285ee1875626261f4b. 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/GBLPF2504152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1028e83a14052b0c34e571402ca7f395683b923f588a69fdec98d126c8c98a40. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GBLPF2504156.
In the Loving Memory of You / Time Will Heal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e22a2b6fb850162492a65d7967cf28d765cd8b8291cbfe68c74cec4b279564. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/SEYAR2400307.