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 0xb1e9e6c671dd542e0d7ae7c67e4b0971e23e62adce614f1b0bdafe3f0f3df366. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a1bdade-726c-4edb-a0e7-52fca924181b.json and https://artists.proofprofile.net/proofs/artist/9a1bdade-726c-4edb-a0e7-52fca924181b.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 0x14d1798cc1bdbc0d7d8803a6879ab4cadcd0ab39f2b9948bfaea05c910505f87. 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/USEP42112008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db72a9eb7d07a7bf43faa8c898e95ddb380cd4b1c892d333b1d507ecaa5ffa9. 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/USEP42112007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c559106898c10477950654e1f6fe6f166554aded5a18098af6eaeb586ef12ee. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USEP42112002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c99a185c3130806c67ad5c031169cb040b98e23bf07bb23fd1ea796c22d35f. 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/QZDA71912835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4748a026cb015be7a58ac93d492d768e44491df7198ddd99312a3d3ff0834b3f. 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/QZDA71912836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd378a02354d278d7b1ec348595d7c27b5cb232d0790a0b2f899fdc99ecaa29fb. 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/QZDA71912838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf01469d814821bcfeb7268df594e5f093f491267ad30e0ada218652705ea4cf. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:21:06Z), 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/QZDA71912837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d10e0a7fd27d642be0a02c65e977eaba432968e572a7376f28c68a9ccbfdd6. 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/USEP42112003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa1bced3657ddb27aaa2095552076c7d7796a0e9228537e0cf6a8c0e4f4d7c5. 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/USEP42112004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c559106898c10477950654e1f6fe6f166554aded5a18098af6eaeb586ef12ee. 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/USEP42112002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec19cb5bdee99e3bace8cf08ce1c93539b7c9e5f93c08744f2aa8e628ca2ddd9. 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/USEP42112006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db72a9eb7d07a7bf43faa8c898e95ddb380cd4b1c892d333b1d507ecaa5ffa9. 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/USEP42112007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d1798cc1bdbc0d7d8803a6879ab4cadcd0ab39f2b9948bfaea05c910505f87. 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/USEP42112008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c24937ce9f96ec5e172a7c4664e9f74f8a3d0a470eea14665b231d65f499bf7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USEP42112009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986d068f4c04e095b9dae1db5dfdaf1c05806bee2b48a81a4be31888ff7342fd. 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/USEP42112010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd12a3978471a9a9b1db9cfa37b5c83842a6e55373b96c1b453376a660763616. 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/USEP42112011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730b94f57486b2d506e4d24e69dc4fc9b7f91459c3df2501b46fed59c4531140. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:33:17Z), 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/USEP42112013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec19cb5bdee99e3bace8cf08ce1c93539b7c9e5f93c08744f2aa8e628ca2ddd9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USEP42112006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d1798cc1bdbc0d7d8803a6879ab4cadcd0ab39f2b9948bfaea05c910505f87. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USEP42112008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c559106898c10477950654e1f6fe6f166554aded5a18098af6eaeb586ef12ee. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USEP42112002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d1798cc1bdbc0d7d8803a6879ab4cadcd0ab39f2b9948bfaea05c910505f87. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USEP42112008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db72a9eb7d07a7bf43faa8c898e95ddb380cd4b1c892d333b1d507ecaa5ffa9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USEP42112007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827502f2c0b03163e84ec4d96aff575de6a63c815136949ca345dc444133a831. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US5661920001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e1108c92c10e70bc1c5db5c10ca1c31fdc7172f06a94a0fe1ce8e7e014f037. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US5661920002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691c6740d1527ae487a66c2a4bd6649168121a7f9f26c3e037e14cc28fba7bc7. 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/US5661920004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4314f93173702ff0ddfc8bc8e372443c0f6c943ae6bda44642c71543026b2b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US5661920007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d427368c6f976948880ab07668a79b9a721eeac9512bb66fb56afb828a1473d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US5661920009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34d6a4f1c54fb2cfde221086ee317d0bb07fe7d82c73d8f52f1f01aba86d0c0. 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/US5661920014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e02c416572b998612014d3057fb3773151a6a96df19adb9da21a8245902115. 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/US5661920024.