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 0x35528d91d6e0c5709a2a3d661720eae5c685de3fe068bef2f4a4e8bc5b17a374. 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/8aaa9d7e-10d7-423d-9cf8-2ad669fcd3fb.json and https://artists.proofprofile.net/proofs/artist/8aaa9d7e-10d7-423d-9cf8-2ad669fcd3fb.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 0xc5989bbef8bbe99d8805f5a1064cdd032abc37bea1b8d7a20950dcc5bde00940. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:22:56Z), 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/QZMWW2163272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ef8ec64b41f031b32c9dc9c56e4809eca9be628613cbde506211228b6e97e3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMWW2163273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33c4bbf836cd6032577a2a58d69c1f96df6da0b035864662fd985d086ea99f2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMWW2163276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360859acb0b5769b4ee2f5e0c0273b0452975ebe5f5afeb5c580f197dde11c8f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMWW2163277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2229a09cce3db33a3e1d29200e5ee75ccc30120abce3d5b6aad3ddbf6cfa8c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMWW2163279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3749f5f5ae9e4f842e980794e5b953cf9d99ac9c05bf2c8d4170fd7b860465fd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZMWW2163280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3457af0fde279c79ad588c0a7386b81c889fed7f916789359f804e0bc17d47. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:48:18Z), 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/QZL382286728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad69459b15bdfce6dea33c9c8f81e0ff32da95e8019d0e5880697ac4c82c1a80. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ4JX1761452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9efc643d3468595ebfa8e95119d7e18cad64a0e9c0666b5c44accaf8790cd32. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ4JX1761458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7abfaafa689af7bd3c54ff1b669023fc0bd3515ec5cd7f66e7f6edd3543a50. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ4JX1761453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c536c0fb65060547073aeeec4746b5d10b44921f6a2b80291c95c2dbc4e82c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ4JX1761451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683d0db08ba96cfee06386dcb0b81fd6faed3fbf3857167d8329e5332a1cbeee. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZ4JX1761456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77d5c4156c6fdb06bc64b083d49abd049460399a7b8680d81ba00725eec2863. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ4JX1761457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434375e6974b681cd70ece197a9d53df5d19794385c284c39a053d85f64a76e6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ4JX1761725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fc2e9c33ac652be4ebd19351f29aaf97169a8e4379e09cf8d4abda6327cf12. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZ4JX1761727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434375e6974b681cd70ece197a9d53df5d19794385c284c39a053d85f64a76e6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ4JX1761725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda050fef0446f581882594d6c0d716e6fd21b1f19f93188442f45dbf1dc997b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ4JX1761726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fc2e9c33ac652be4ebd19351f29aaf97169a8e4379e09cf8d4abda6327cf12. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ4JX1761727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3247e3a5e07f5621f0025604f9b736ff497f64d99fac4f3484e9ded57475807. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ4JX1761728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2520f1a2d9fdcc2e7a4c8761770355d1c2f2b7a6959acdcbccf811fe8a366850. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZ4JX1761729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1ddd6e733812f3e0f2d92bb58582b2c516c9a34ed80b752a05de8f97877395. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ4JX1761730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6595da60e7023888fc115b1a174826c8fa7dfccbf58b68082f890ce9089cd194. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ4JX1761731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2fa6241a80729d7ca007512f39f5c12d5d9c653a2f6f23350b560747cea12a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ4JX1761733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa53cc2f5b0060abd8db9180e1e7cc91d9d20f30a77f430a4daf4c996bc3a89. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ4JX1761734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99221ebfe1a8c1f130b194a5d3911136f95c36e2d01b1d5aee65d38d6c778b0d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZRD92404667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95882dd1d0cb05b87b427973c0c9e8124f331a1b59519682574d09dd0245293e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:08:35Z), 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/QZRD92405389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98eed3fa22d3bc90e0c35ad1bb2904e519fe36aa854f26096a94491fb43ca13b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZRD92405392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31bbfd15cfb88b8145c570404965d9c6390a9e0f60efbb7ea16da7be7f61217. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZGH81900224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404ca648463c3ed44d864f097e5fccb6575aa4d9e2694f0e4636b49ddb3e9abb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZVFR2200140.