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 0xfae24513e07cc089a87690dd6e27b3b3c68c9e9e48d862d4813b784331521f90. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ec7cb1b-e4e8-4283-a06f-1d18fd812344.json and https://artists.proofprofile.net/proofs/artist/8ec7cb1b-e4e8-4283-a06f-1d18fd812344.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 0x22a2dff96573ca3e98bde601155ed63b541c0b6d3a06214dd2817d50030f5090. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:03:19Z), 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/JPR651800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cee59f3b83a3ea9e7e05cc86466832b86dfd306eb292459110b46fa6ad985e9. 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/JPR651800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fe3462d174c2670ce09895baefce9b6f91c175b68539ba52494b1d2055869a. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/JPR651900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fe3462d174c2670ce09895baefce9b6f91c175b68539ba52494b1d2055869a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPR651900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d0b2560d018a231541348688330999b0a79c1be622bc8f58b559deb1cbfa52. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/JPR651900069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde60d60a446c31f774eeb9962c0bfdedc018f34a8c326cc846dc62ef358aa799. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:03:57Z), 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/JPR651900248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eb27c709d148eca3975aa56b4154d75fc796dd6523e17acf90612f8ae4bd6d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPR651900249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3a25044fc58b7d7f1617d6acc046d148ba6ec0900bb8dd2c9730831e585422. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPR652000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f4ac3fdee7d6dcf3f32a812e99327246e4653d84f3abdd4b21e01bc86f58c7. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPR652000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37e0882b44c43b66481bd59b8a16932538dff7def35469a784634bbd6dbf183. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:29:26Z), 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/JPR651700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32109c4f836d3eeb8e8dd1429479ba0bbca1daf5e40e58cfcb8673e6fa939d37. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPR652000265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27df5ec217294fa3824fd5a6c41d15f263ae134d23d1dd52a6f277fe968b41d2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPR652100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27df5ec217294fa3824fd5a6c41d15f263ae134d23d1dd52a6f277fe968b41d2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:04:08Z), 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/JPR652100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0568e58777af6dd83064807347ddb61ca532458ba024e3ed12048f5e35192b6e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPR652300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f292f8b9b0bc8383ef20151645b48fe02ee29aea92b6acf41df4aae22366e40. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/JPR652300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0568e58777af6dd83064807347ddb61ca532458ba024e3ed12048f5e35192b6e. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:01:49Z), 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/JPR652300002.