1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0b262732df884d3884432f30cba4b15ce37760ca37bef3879783f5c08afc982c. 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/2f6738be-77e4-408c-ac24-c5f26526d890.json and https://artists.proofprofile.net/proofs/artist/2f6738be-77e4-408c-ac24-c5f26526d890.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 → block OTSBitcoinBlock must exist at that height 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 0x787d6d7394051844ebb73d634de7349d9617d1d7eb9dfaef0325d7cf69f5e3af. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QM4TX2155319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7a120c052d38ba8b27fa35c4869e01da697f100fe01478782c9059590b6116. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM4TX2155321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabc6c7c4a21db81a4f9eb332d8b6c17cf5db3fa3c94be3a880dd41455dc2192. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM4TX2155322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50690f49aeb94dea9b15f70030cfde170ebca7bb98a5afd1fe8d49dc2e9d6230. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QM4TX2155325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02933f846b01b68cd0765e533f8f56061e04856fa3889ef94d0ed7f249f3ced0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6MZ2256788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9528bb288b93bf12c6073316485e23d6aa48ad9b115001cfb0ad420e0f79bb8. 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/US5ED2303769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596fe15d6e4e6fec52eaa1a662f0225c8a8a2e6db5d6f1c23b4cf04d4947af2e. 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/US5ED2303770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867601619cba0c85fb7c2c23a2c41895e66250ef70b5dcd451f1ccb7db0241ef. 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/US5ED2303771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6986937dc5f525c1d6c2e72097d4e9703c844baf4dae242d281c46996f5a5bc. 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/US5ED2303772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9a3ae0d2738b9b1f099ead81ef344d851ba37ca10651942d6e90b06453549b. 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/US5ED2303773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170eb9766c4ffc21ce011319ea016f1b65bb4606309876dc65552e2069513b13. 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/US5ED2303774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94268df5e8f84d9e968d9beac7ff3caea0bb05da12b8cf411ceaa335a93834da. 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/US5ED2303775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f3a649df7a56c7098ffe304b8cc774be73e67d0064abe488dde83dd6606e5e. 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/US5ED2303776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e40fa039c1b3b75e93a5ebe85cce65bc14fbea766dd7914e3ac59731f46dd92. 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/US5ED2303777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b6ffe65dc45988ac0515cbeb440ea7fe435e03bbbbc818f03dcda3c9150c8e. 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/US5ED2303778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f1dcf7859b180ff0294db193a368a7841236dae9457cf2e3c78123df371c87. 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/US5ED2303779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5002f1a07cfbaea43b00bcb570bde4cd5890b3b426d6630a7138fce45a8b0c. 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/US5ED2303780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc645a2daa32691d6023bc50a7901f31cb07d1c90aed20c592234fac00ecd74a. 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/US5ED2303781.