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 0xc05b795f422e74362fd72087c01ac54110b76c2b9bb0a20bd84ad9ad42eb4f9c. 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/9f655aff-a704-460b-97fb-ec0eed41e1a4.json and https://artists.proofprofile.net/proofs/artist/9f655aff-a704-460b-97fb-ec0eed41e1a4.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 0x4ec5adbae8785f053cf30f5334e534551e7536c32f3a7afb3d7d0cdf6e1e3751. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZMER2506761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0c340137d22448e024b0c649d7d62bf84552e9e95a4699d7a8509dff542b3d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMER2577329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faa12492539ae18d79752482a68bf0453610ae72c833076d02ac17676511277. 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/QZNWQ2565513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccdfad686711f94e596a2f799bbfe39d76dfc56f8be0003f3ef6fdcda698c75. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNWQ2565434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac4a19658d62544e0d52aef30776822a17a0e116fc95a7f64c4677150c98164. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZMEQ2552505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9783a22e4db3602207d11ffb5166a18f45f74387dda6c1e0e6d349e7ee760d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:51:39Z), 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/QZNWQ2565551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81356da549f3db366e054a03ae25fbd875a6297f5f592679ebaf88fe1c431386. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNWQ2569866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68454a332d1a342385c122f64f674ab5bf20efac6ee1807f578d90f4daeceaef. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWQ2565496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27a782523defb79c55ee3f4ae3eb69f33d24cdbe4eea2922e0f72f7495ce2b8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNWQ2565524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc6aad922c663a43a76bfb402dbe0ca5a373694fb24c529f6be1fb33ef93b5b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWQ2565386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99be4a85c2134476186ab74e95f09cf34e7f59a324ac93d29bb313c0a8b61e8d. 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/QZNWQ2558395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752caa77d127be59e49d522485e1a1f1cdc768b4ec81a3cd47547e69f81de5ce. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNWQ2565370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164866b4e3ae5feae3c0cc408999ae33867ff42bea98ffab120cf892edf8d07b. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:38:43Z), 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/QZNWQ2565377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf97350a997d0e2afe3f5f6d3c9f15dfb6492eafa2dee236100b7a9dddaa9868. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:07:20Z), 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/QZNWQ2565458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb587f1e237b7e396e6c178a099c3fd3f5fa7fa55b80fb8d1916dc6d3130120. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNWQ2567679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc637b5f55fa02896548ac26a0b59b16bcbfd7bb99fb45f48337b19bebcaa52aa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWS2524273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c9f8b620a7621a71b35487698f0e96046410f785ab1e69cc3ddfd8e58ce2fa. 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/QZNWV2515609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb430ee1955968c73ff5449ab58494f5f74e9e837bc51ffd05dea1b8875b3ae80. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZPLR2571380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed83474d10e61a8a6b673f47e41f9a32a7cacbd9e5e58e2b97d776f6d6c28e6c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZPLS2593168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b916ee48244930925be5da47f40584ed83a6aeff44487cf335b7e65ff8770b2. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:05:14Z), 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/QZRP52543546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fd31a2c6877db4998ac92395fa19a5f1313ca292202764c771483420aa08b5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZTAU2504647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb1f21c453984f0155a528a4c009bd6535760b7e6c05a1f88ff9afe42b251b7. 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/QZTB52513716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90499c5825d1d444332b48883e47b9060afd0d00ef18c565936e083c54988b66. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:12:23Z), 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/QZTB52539966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821793b83b148294a73b4827495904ca7a8c5f64a358d72ae1f51c1d9d5d7d13. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB52596282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631757c754fc050166839d9fd99c6b5d14694e0b66c52d340c24800b46295d05. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTB72549917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498e8eba4dc7d627a16ce758e4b8ff61d26d1f2d8423e530a21279b1dceed35e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB72549918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4e7c0046221406913606b9ad12eb689d0a5c99e5f56de68fdde4c22857f675. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTB72549919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7e46108ee6d6df5ce3037177f8666c62ff1228a3c529c828a1540f3a58097e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZTB72549921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542a273a47dbd87f13694700b06e046b549c82c2e33fb1dbcc7379a7068d4d86. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTB72549922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2301c3d3d48c3dadcfdcc7528808945e55f13efdf8afc6c22418c7e875c11e19. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTB72549923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12d6b8f5b8685a8e3fa26241c5c693e7556860c34b232a8a89743c8c8c47a4d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZWFL2593761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea25a554424d9425f6162b2190062d00d445acf98096135324ecaf11aa720a3. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZWFW2571047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8c6459b7537ce634346ebc5cda31483d5053a6e247ee9b31b08e224e468ac3. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ7L2583423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62192a4d2e243c68f0ea78c5eae2616ce1bc12d8deedfc17de747efb1c42c9d0. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZZ7N2540987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fe5cbc7df06c02f3e8dd497f04a1b99a20abc2e028b9102dee91ec81fbee9f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3EZ2551935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce420c14e276a070a5486fd664a2c9053f794090271b5a5cfbaeed1028cadcc7. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:18:59Z), 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/QT3F42587893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903ea9246cbdb46c267389ccc45dbc7497c354d714a6ff6842c6ba44f5e8b0ec. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:01:42Z), 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/QT3F72583168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32722b100174f587c20b96014bc53109e0709c4d13bc2de7470891d27d4ba18. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:50:49Z), 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/QT3FC2581916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3fcab8bdc9b642b33f83dffcb8e2a1d128615e3eb7bd2b962aa6525f3e2841. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT6E62501640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea02852fb61f24691d51f209cb29134161c82019d02cbff30c595fe387f1a87. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT6EC2511213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e6d1f5f4f97f611e3e62d5e2843a13671abccf62ee16b16edff5238631ccd2. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QT6EG2574890.