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 0x015505a2131164e6edbb5cf0820957d141468d7084898d43b7ac36065418aa2a. 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/058db1cf-ddad-4b19-9427-866e72927703.json and https://artists.proofprofile.net/proofs/artist/058db1cf-ddad-4b19-9427-866e72927703.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 0xa486ec5cfbd9a868e3001eaa5322a2a9d68932e1dd8a3f2524fbbc10d7122c47. 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/JPC542304610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0861354dd3b93420e43ae7ca87dbab833c9c5a9cd9e927cc6511bfca05a8611. 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/JPC542304611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386bfb6e51f58f98e676afac24e629b4b98a76722514b8687f8d1d9eb249d0f2. 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/JPC542304614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ba805ac02f4a7f70c97f3378e1466d3774b9e95f3e75143faa60553c5a5f4b. 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/JPC542304566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e770c28b25daa478db893847feb2e32c0b405228bf4635c45aebce344e8b29c. 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/JPC542304567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568b7a84632216de897f15882f6fa95f144f6dced9a94e53c6edd15cd2ad2c0e. 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/JPC542304569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d5c2e6cc0f568707578fce38bbbffbf353dd1fbdb50fa9229d042328e8766b. 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/JPC542104330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1345a1e86e84b2fbd08193816600e0df500824cbbd445faf0835c70605f0fe0. 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/JPC542104334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98408c5d9825ab74449ce7301f9b1afdfb67e81243943e7c193cea004a22d9f8. 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/JPC541904203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dfa0a9788772fc8db74f6d9022f7b3b8afb7d8d3926a5a96d76144ca39f086. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPJ901911840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040b3475bcb01097687caf5092304713e09061ffdbb52b3d3b34828c587fa9bb. 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/JPJ901911850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609ad0be132f5bcfa10a40bd770ba75f88c686de4ccfe057b03ae4520bcff421. 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/JPJ901911860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a81403ae5523bb14081f7dc6e1ce50e06d76da7618870130fcaeabf87f7de4b. 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/JPJ901911870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f6d19730b91dba08c24ef4a1a5c8c344cdbaf989b5c61cbfc17f4d5e9e7cc7. 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/JPJ901911880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1fd5d74e087d30b1f4154964f3fcbcc37e0b0c3a1440112d91df4a503d87f9. 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/JPJ901911890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f153fa04b1bc754eab203347a8b45be406692520d1d710bbb26b908d67551a8. 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/JPJ901815700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaabcea9869cd0fbcb24f9d5b3bb968b8dd1acecc6a38fc9cb892b2c38fe2531. 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/JPJ901815710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40bd304fc711e80b564d99a9b32727eb97ac55bdb03f80e344330c96dd4f90d. 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/JPJ901815720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706d83f18beeba1c592e16ad477d4fec2e056f8a60b5f3777e86487fc9852211. 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/JPJ901805150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8975d272abac79ffc01cf83572f1644b4c892a3d648d4238782c90edac93728. 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/JPJ901815730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d78120f98397c36d62ad3c496fd7855bb24643415737816ff3c341e383356d. 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/JPJ901815740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467d04f3651dd153ae3074fab589d046ca5e182c5a5654031523fcc01e2e7cad. 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/JPJ901815750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa666f554e24a378c48474d795201f4a78fcc2cef3e4320da4343bfd77a274b60. 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/JPJ901815770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb0836aed23cfcfb9605a12a60f5d7e3042ceb5df40be7e7af48b0a5e5e401b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPC541703587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6c4c168a57990773c81a1c103be55e9cf5a7c9f1e3508f97ac975454ee0ce7. 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/JPC541703594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65e8a60eafd5cb84acb5ef7d404677d7e184c402a053a086b3b39192f967935. 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/JPC541703597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040b3475bcb01097687caf5092304713e09061ffdbb52b3d3b34828c587fa9bb. 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/JPJ901911850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dfa0a9788772fc8db74f6d9022f7b3b8afb7d8d3926a5a96d76144ca39f086. 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/JPJ901911840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f153fa04b1bc754eab203347a8b45be406692520d1d710bbb26b908d67551a8. 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/JPJ901815700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706d83f18beeba1c592e16ad477d4fec2e056f8a60b5f3777e86487fc9852211. 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/JPJ901805150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c904e6760b8d6e0e381d01700ab2f7dcd40ce6ecd48ae1e2b9bd2ac37ff0a7. 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/JPJ901805160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b1ec893bb8fe686b1f32207d9185710d5701e42fd9c0bd00aeb773bd84bc76. 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/THMUN2330006.