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 0xdf50a018e11c06fe3e35dfe4bc7c30f481421a2da29fd1988a580e8b0ef49861. 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/876e770f-abe2-410b-b2d6-ec795e0c70b6.json and https://artists.proofprofile.net/proofs/artist/876e770f-abe2-410b-b2d6-ec795e0c70b6.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 0xd91a2e1c12dfc43fad90086c825a3425acb266fd5fedf3f0950635cbe1e6bc85. 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/GBMA22492485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b9886cd09c64f872f20c72bc260e8989c715a048706940d71f96980b9b421c. 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/GBMA22492486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13236e5a56f91579b999762d80ef8c1da50b231e56daa1dacc1a06f544760fc1. 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/GBLFP2057533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0047994a29e91a7919f85d6a5d3f38f546c45eec1c8e5aeddbcde2daa49fb13. 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/GBLFP2061731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f71f1648b0c5dfa885b4323f92269db7f5d82779ada4ba7ef07d64eb55a02a. 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/GBLFP2061741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcc3766f55fd4d9bd5c85c6f1c72adf9d73f6f163ca2294ff1f2acb1e07d902. 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/GBLFP2061748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d816d8a212206cbb3115c02db769e785445afe3aa0e13ca3ded85e1238599f. 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/GBLFP2061750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235eff1e924f20a01c2d198cbbd9009e83721478304adad1f1b600e85950cb9e. 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/GBLFP2061751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf005fa1f7fa16f12a9e0b70f66924ee2e8989b0cd560b7a5a4c643537f60c37. 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/GBLFP2061756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a7a849b77267766388391b8aeffd634fd54968a9f79852dbc51cccd5f3a4ca. 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/GBLFP1906292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495c538621f626fd698e4d1f9de778e021fb893ffaa5d1055e4922c9b2008d21. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBLFP1906313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c40132e2b57f997fa6bc25789c491d15b4d3ecc34c51fde71a5a731398cea93. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLFP1906327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b61e35c8f6b3315d86f4ef23741c72585bea3dd48de06f1f2e0d50eeaa7abf. 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/GBLFP1906346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce13102450ec1b680694f2b4f1010f92807dd9468c951c8deddf74583494b2e9. 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/GBLFP1906349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ee3dcce19a9838bb8a184ef05c0f5ed811977b996af6eb33649c954a95bc22. 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/GBMA22175667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835c77a9e8fff08d33c53bdaf07d622bc51fa73afc8c9a68f4c30f212c6eb17d. 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/GBMA22175669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11545955fc7a93e36b3417b67f5a61c59d9267e5e6d2bd8a9b8e64f0504dd94. 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/GBMA21893449.