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 0x7dfcad091bb6f96069367e2485287f34bff46a14334ffa347eddf78b463a0463. 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/1e0e4dec-e048-4d0f-9a84-d102c38ee71b.json and https://artists.proofprofile.net/proofs/artist/1e0e4dec-e048-4d0f-9a84-d102c38ee71b.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 0x7f487446a57e5d4cc5d8cad1bf67b3bba0bf01ba23f1ac48b8b4d52e311065ea. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GBRKQ2111052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1081a691a07dc74d039b0f3e9167bae1d0e3446cc5bd58ac1dadd2bfdcc12696. 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/GBRKQ2189690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b0b37c111f48ae201a84039627a6e1c9538b5f7c470314c678f00aa34bc7c5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBRKQ2189694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e656b9cfed0693c12904c94f3642f2ad7dae42858dfe046fd3e9062eaf6752. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBRKQ2195565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6057fe74e42b8b3a8c07189c7d9c431140c2519825aa02f81c47a8176fd1dba. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBWUL2143857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12a0224de2da214a1af47c4da70b8fa6e78b1580eeffc3826706dfa0a626828. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBWUL2195579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8a7bdd53bdb6614bc84415b07757ce4c4463748f15f5d1b1c259c4b7ac85c4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTRX2121768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f68dd9e98a7aaf11939bb18ce8cb43a371bd301de726ba9a55d5c7eb6e55b9d. 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/USLZJ2233370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2c8edd8fb251cb12f430dd0acaaaef29f615e143170cfe4598d620471f29d2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBRKQ2202826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e285cd2488692930548ded4776f1f7530d473dcf5ca7ae2380b4fee0b7427b3. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/QZTRX2256873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82064dc2e1e2d2df58418836e4d0eb80949bc593d2be27271477b15e27ca85d3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDE2235310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6843d6abc69478f6344b2ab4ab0af715ab53898f8414bb962ed7010ee52f163b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWDE2306825.
THIS A ROBBERY DON'T MAKE THIS NO MURDER
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ee5995056f98d8546b1223c0e63fbdc180ebe7031feaa7fbbf8ea50394270f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBWUL2407188.