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 0xc3ca67188a35e182f3515579fba32bfc4801c2e34d46426087b403d93d02bc3f. 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/10d32035-6172-45cc-a021-17331546b19f.json and https://artists.proofprofile.net/proofs/artist/10d32035-6172-45cc-a021-17331546b19f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gone (Julian Marsh Extended Ethereal Mix) - Radio Edit
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 0x0acb7c2a88ebd8260cf52c4bf12821b6e57ea478850eb4956773eee3b1b85e57. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QMQYB1503604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a195c4e4caeb59b0261fa9ea7d5694b7cd6ba32481b2dca8c6d30b48a977cc7. 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/USC4R1901900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33af886d5efc4ad185457bf79cf1ff8ceac886c667d16c0adf2ee8716e2dd85. 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/USC4R1901904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6832f7be6b96dfcde884d7fae2ce2451de8da6f44c05164143d91c8594348abf. 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/USC4R1901906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10514338acac548432b89f7551accb56e31b20951d0af738b045997e1070590. 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/USC4R1901907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af1dd002384c9d9ced5aeba86d1bb4f03af5737e960cc82668eac208960c68f. 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/USC4R1901910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6484485c24618db35a33b5764f1f54dac9260fb5f1864c4c313da497317c1a89. 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/USC4R1901912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c32341c5094773d565490fc02295bc18eb3ec9951e9eeb92b27e052a59c37b6. 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/USC4R1901913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c48c77f40fbaf113935b055ae9e4d1d962c3cecd6ad3bb2dea5e399e5f73a81. 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/USC4R1901916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174c4502abba700f0d80a3c2f7f72a555b344b008f241f70d046c0e181d3d5e7. 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/USC4R1901917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b757b5f855ba645e8b9449a7de91a3a3d0ad557154f3d90e8052422bb1221d0. 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/USC4R1901919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d3721ed26c346a928d165b0052a29ac03a184deba0fe7aa7c3767446fae93d. 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/TCAEB1917722.
Drafts: The Music and Lyrics of Alexander Sage Oyen, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ef0830c59715dcc78383e80aef5ec1d086f46e0a4f57532d1f6a62b447aac9. 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/USHM91305910.
Great, Cool (feat. Blake Daniel & Ben Fankhauser)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74eecb026697d54469e9ea9c0a1c6d2abf60da26620515e73b24decc04b37db. 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/USHM91480986.