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 0xd7d3bf107ad7afbc727459147a06937064904b08735b8ac9c0b5a78f29ad998f. 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/c8aa3ca1-da51-4aeb-9e8a-f4b33e077266.json and https://artists.proofprofile.net/proofs/artist/c8aa3ca1-da51-4aeb-9e8a-f4b33e077266.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kingston Shuffle: Funky Sounds and Beats from Kingston Jamaica
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 0xd8dbf1e54bb2249acec2cb4ddf0ea3d9ebfc9443bb222a846315ee814a01bf85. 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/US2392000115.
Pure Garage Vol. 1 - Collectible Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159bc4a9efe149a6747704e815d30f305dc5e15e9a98131d9783ca465e0c101e. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/GBJX32363117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54c7392f2963b7c27488c5f930ccf5973fbac69cc353bab38c4f26d93b3e953. 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/JMA020600251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcba50af0332a12ced23732e1140c55fadefbcf3abcef99961d1489cc4a0392f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USPM19001027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9086e8e1777a5f50daf1d4ba1a998499afc77a9e16b0630c1616c3c97402ab7c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USPM19001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcba50af0332a12ced23732e1140c55fadefbcf3abcef99961d1489cc4a0392f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USPM19001027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9092b1af9957165f3ffd3631916ae325c9bf9eebd724c5a778f529788bb0b618. 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/GBQRF1104221.
Bridges: The Best of the Private Music Recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9086e8e1777a5f50daf1d4ba1a998499afc77a9e16b0630c1616c3c97402ab7c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USPM19001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b6f068f8209b492af01694f68afd6d8f29b379f2fb1f3e7334ede8e28f1ff2. 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/USPM19001028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a1b38624a42bf71cdb348a60da13780b696a4e30a7e19f58e170c20acf42d7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USPM19001032.