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 0xc09a09d78a4b24f464cee76f7935e1c55279d8804f14ee8c67e43be059799d1e. 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/f1ea8c4f-b93e-4cb8-bfb5-351492ac6aae.json and https://artists.proofprofile.net/proofs/artist/f1ea8c4f-b93e-4cb8-bfb5-351492ac6aae.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 0xe5e4e7a87ae1edd83901dfb18a80bf316e95b6313c102245e5bd938b7405fb84. 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/QMFMF2452304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd931ddde3d5244eed72c8af13397dfcef91ca7c9b9ba97e0c50657ebc973834. 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/USA2P2429812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28860eee1a190ba10d43493abdfce8505fe382dabab92f00fb635a5dd839a1e. 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/ITFGO2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca51993c7330c439d4ec7883f44766919c1c783f3de3843cab30f8f2e96f3b6. 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/UKBJZ2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bc29d381fd842df7ecf144924ff580eee82f0ba716b729b88d88acd901028d. 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/UKBJZ2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837111363cc3e336b27daf88b12980592af1a1e8d274a347c0855f575266d2c3. 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/UKBJZ2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e47ce48cd60c8ca98e28efead6ee42fdf5d235addb81245f3604f0d360190a3. 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/USA2P2354025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c3b230d46e94a25c0f9aeb75199e77a5f52bb12fc519f47fbcdf2070d5980f. 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/DGA082306589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61edabee717149e275c1749b2fe81c351afde77d8a6249f1123b61e54aad72ef. 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/DGA082306590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe31fd303fad4607d97e34fcf30e694ade91be00e828e9920f1a7f8d9532c06f. 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/UKBJZ2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b6792eb7b8ac157ec3bdb7f87985a4d425d997a3e15c2eaef185f2facc8763. 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/FRX762143080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d55796348452430975649b27126f588ee8b3acddd65bfccf8beb986fcad6832. 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/UKBJZ2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05288d9cab7380eddc1cd2b2de8f0dfa86f773a8280435b45366ebc1037c8ec. 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/FRX762143079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a0ad8077b4b43c7c2faf962a681f7b4331b5b12898a76bcd1e33a9f40fe5f8. 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/GB2GW0901103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f69833d7acbfffba10499620599e36919c66ce4e674a132c6906bec10a358b1. 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/UKLVE2100998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4349136a14224482fbcb99d0a70f67a724fe93c32f12d95e082b2f559b66e9ba. 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/UKBJZ2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ec954717c521a5b961d8d63a6add7f4803c72ba5ffc3270b0efd0f25a4a745. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/UKBJZ2100027.
Layback (feat. Brontë Horder) [Deep Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4349136a14224482fbcb99d0a70f67a724fe93c32f12d95e082b2f559b66e9ba. 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/UKBJZ2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a0ad8077b4b43c7c2faf962a681f7b4331b5b12898a76bcd1e33a9f40fe5f8. 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/GB2GW0901103.