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 0x59d063a98dbcd705273acf1110d451a767e657c38fa4fb8c3bf4e1cf2a877a53. 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/aa179645-8069-4749-b14d-4b2ece4d07e3.json and https://artists.proofprofile.net/proofs/artist/aa179645-8069-4749-b14d-4b2ece4d07e3.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 0x2d99aa62b31f024ea4301596e8892bec938e5cc94fd3061f3a9e522802e210c5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12403033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e2415c335bc2b236cdf15b14f2ee3dcd613152d65189d182485498951636f5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN92238320.
Christian Rap and R&B (That's Actually Good)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee098c3f934eb5b19a56d37ba0ab45659cd7b9bc482f30d680fd6145c4df4ba. 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/USUG12402422.
Christian Summer Music (That's Actually Good)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d99aa62b31f024ea4301596e8892bec938e5cc94fd3061f3a9e522802e210c5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUG12403033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee098c3f934eb5b19a56d37ba0ab45659cd7b9bc482f30d680fd6145c4df4ba. 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/USUG12402422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fce96e0bd4ef97aa8bee23cb4e18b08331adac8c97c774927f938a510072787. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNA2322666.
New Christian Music 2024 (You May Have Missed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae84249e13861ccd7829d2a2f4c0e7115d6e60241a740e0da663abbaf8613f01. 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/USUG12403956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d99aa62b31f024ea4301596e8892bec938e5cc94fd3061f3a9e522802e210c5. 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/USUG12403033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d99aa62b31f024ea4301596e8892bec938e5cc94fd3061f3a9e522802e210c5. 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/USUG12403033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d71edb49ca5a0569911c88e22443a1926e0b3de745cdaa9c13c5ceb1376b89b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUG12406739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24115209a389cc5786cf87f967b66dfc61a9d18348c49ded969d41033396aeeb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12405945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134d14ca7118c5f13365154ca6a880f3d5c02bd1a989d8143ccb96fd1b1c54de. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUG12404979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b833a13a2f2e26245c06349ac26f07f955a0c8d39fde476756d7c326699a496. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12406740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdcf9cf09a95231760d4835901726c9561ab0247d8f90745d51851a94924125. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12406741.