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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00aeed71c11e5876d49d8fa21a9da01454ccaf121ca157712d3223c2e9981e6f. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8eeddb40-6c97-41be-a890-f50ac0916edd.json and https://artists.proofprofile.net/proofs/artist/8eeddb40-6c97-41be-a890-f50ac0916edd.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc0fb873b4b9f57569778a45990f57ed284565e27e9901a42e95dc1bf40e0e4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:38:19Z), 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/TCJPT2296176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3407e7fc392f78cba16be86e4c93a87ce09b93491e8a664a81a1e5f8b2dc46cf. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCJPU2210296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e8da1d6f4bcd1157cdfefbb756063eaf6e3f56fff142271e3b9fa072b1c8c1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPU2210395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bdadbe6b83990a5c7e90da2138ebb39742ecf70890030b47d4c05a9612dcfb. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:10:29Z), 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/TCJPU2210440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec65d9ec8430a7192c9b43aba8237f8b732e287c3d225ed75a9694d3fe91f628. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCJPU2210449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fabf037a8cba38649d09c96922eac1b684875cbff0bb93a1c8ee5dab27529f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPU2210537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44f7f24f45f7034cf99ee0ca846239666c0897d24699740710e572d034a1c14. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:53Z), 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/TCJPU2210541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f07243a412a65e3159f89257467912e1f796e855ac99010dc4d1be9c90cd81. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPU2210546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520bd8d0d3de3f31e45c2541be06ed763342ae03b9f2521ddc548fe0f5f5db6c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPU2210558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897dd30828e71fbef0a87abc31ea31b00627fbfbb907ab6cea4aa440e6741834. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPJ901511960.
Timeless Melodies - a tribute to dustbox -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76626f9c7634b12a7079a4a9c1ba086955f42fd125d491210b490a440936ad2e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPK402401193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ef534ebfc3bcf09565a571f23f7547c6100fa39b1bb44806cc8ccaad19547f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPF810812805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53684acbc45b89f4fef86169184333ff99b2b31fb02a1faed4b713f8b8fd7371. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPF810812801.
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