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 0x406410122265d0c5186e2c455dbcef7bf55111878cacbac04c982ccf3124cba9. 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/9924efcf-3616-4cbe-882f-d42a706dd3b0.json and https://artists.proofprofile.net/proofs/artist/9924efcf-3616-4cbe-882f-d42a706dd3b0.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 0x88264e67b3c36fd127e90f1ee13e43ecc1a966d3552574239f09b72f5c80eb94. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCADX1892947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3804f900f8664af3340947a75f3031ae7c13a0d393f5241e211d4ee23e98f0b7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAEF1911061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a258aeb6ae41287de7865816845c40ffd247579d6fbb65afe0a7238a9a23731. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:08:03Z), 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/TCAIX2414608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b2b556e9a67aa6936ed45c41603c407d17774be86b1bd368823be14d895c46. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/TCAIX2414811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a853efe3fb405a7f438aa91c306fdf0c2a600aa5a643aa647f61c73967088c7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAIX2414825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ec9e2ada5596a5ee8687bb1f3283532e9cf9281ad189c2592451175a78e754. 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/TCAIX2414902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6fa0f7ec8d18673066c18c3380685c26695b994edba11dc8e59510f9b6ff91. 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/TCAIY2424129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa608176e59f5c8f7f272559cde44101ce25928572334725ca1dbea1cd05345ca. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJG2580195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d8f29256aa68c6a792ac18346aa7bc67d8061b93f651be46d6ae01a3af676d. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCAJI2513402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8446cc83e76372b6fa80345b4f4f781148353566f141f9d39faae21bf5afaa85. 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/TCAJI2583781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7849b18b0c9610bc60bf142407efff3312595e029c396472d34cf4f302acfa4c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZMZ92593789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08d2514a9a621f5da0f51936aa317f3fb2d4173660329619daf4b589e7c0b19. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:23:27Z), 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/QZNJV2559115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c165caecb3cae53d7be33076070883d9f81f2654df9ccbd1546ba7ff476688. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZNJX2508383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cd14c2eb40276a3f2095c8ee59784048ce2a15dea1870cd8f74c24f5d9ddcb. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZNJX2508639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab821f197ffe61d5ff940342506d7a6e22bb0c7efa66b9fabd150c563c06b0b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZNJY2510239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe11a2e4dc5d05c086fecd0f5b768224076cacfa07611361c96e09a16c8e56a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNJZ2581702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc653080364e84e19422c7bef019b21b039e870a94f3fda9fa5f39294cffea96f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTPX2513880.