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 0x8ad247ae154bf2c217facf471e2d05ad34a31f83247ba2e4e7d1db64852ab07c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9aea90c5-ddc2-4da0-bd39-bff718607bbf.json and https://artists.proofprofile.net/proofs/artist/9aea90c5-ddc2-4da0-bd39-bff718607bbf.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 0xd00aef1486a13d074d2ea2010962a921af8716d7f603f3c005e362a199440d00. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZES62361452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fd6bd94068447e3546e83cbdec2e7ee2f75cf6b7fb5ea4658ec308191d9070. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN52361566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07df4ad93c8e18f279a117900bc62c61aabcbb9345c0d3e2d68ec7bc9ac2482c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:58:55Z), 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/QZHN52361568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c49756e4a9caeb7f763987fb61392f5070c76e938a26cf6d6d66cb87bb5f5c. 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/QZNWR2314284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f178da394e7ec3008d43cbbb97644cf7491d65194d988b2af623002d880c977. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:26:02Z), 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/QM6XS2302505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4aea4f538cb857262e5824bbad58ff805c0dfd4e58be59d145f1200ad627ca2. 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/QZVEM2383596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f307490dd9a63e3c3f7f5b20b256562cbbd1f231a5128e77bda862fdf10bb09. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZPEW2438227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1ed56cca39d6d5f163e33f52ea5558fe385ae5b411c4ad88818c2f97fe8a6b. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/TLVEM2470362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1932a724490d0ca5a63d8742348df644f8273b22bc41d7ba04d1dfc3c61d8423. 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/TLVEM2470363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444a15c94f0e5cd74faa48fc984e8e6aeebdfead3254edac6cc13ace58aa9a47. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TLVEM2470364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cf83ec74148ea6cba956dd58784c9de6f5875024397d3af7d860e45296bd62. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:03:37Z), 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/TLVEM2470367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8138d6146a6fd458bcf03ad575af67f674915bf31c3f4ef2c50bec168ca4ac. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:38:20Z), 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/TLVEM2470368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f746390643ee3334f9d2d1cb0847dcbba3877bf47d6f2f9951ebda0ae675604. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TLVEM2470369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c097d99b7108e0c341601201844d704ed955838a398a47a66924502c1d522d. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TLVEM2470370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d5e733f1576b6949f98c983af6a66963a953af1ec6d207048fd7267409c9f6. 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/TLVEM2470372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158418cf1c803886ce6d5f256aa461ebfd2aaa4c43c2cc8ab877cecccce7e7b5. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TLVEM2470373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c3b0e6f240492ecc49968fe48c11824b4e5e90a9a655e77a4fd596efe3b7e2. 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/TLVEM2470375.