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 0xd19f30b505577f2b3a79c68b7cf472dde29a8c9e236f64d76cd1bb5755b9d86b. 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/e3be7937-5e56-4ebf-8867-347d8877a50d.json and https://artists.proofprofile.net/proofs/artist/e3be7937-5e56-4ebf-8867-347d8877a50d.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 0x6974b518a6ca40f19f857dd0add4657c5f3de9d18ce3c1b676ae9092acff91b9. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXD7G2590817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68d84704b6c60d5c586a4a3672ca0761b7b7ba212ae99472110f381d6f1ac9a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GXD7G2552168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9791deb804ff48e330cb9613d2d728afe57d28aecb7fb46c03c7565faf3c7d66. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GXD7G2578940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c6d7bad94de8a507aba1b32815d71a3aa2705be67c336e65c3c6b28ba15e4d. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GXD7G2539577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbf948c72a36c78409ac35995b9a288bc1a1c92c3b404262d082c64e39e679d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GXD7G2553211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8317d75c46748ef582e8990666e8e3470d9e4e2804879e37590b56a01a71049. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXD7G2542064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d56330d8ba88489d7d751bbb492533e1533defc89d970ed511fdf847f4f7f4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/GXD7G2533240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5564ffc9afdcf2b8889a9d8f6808312db014c7af49010b5528d788005342360. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GXD7G2514020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab626653f429327101d8c94bfdd8735b7418e75fbcf8423b9c8a0d37e3880258. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GXD7G2500975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a0f84476e10dc9dd70099fbfd890714964876f308df219b2bf7856a35548a5. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GXD7G2564900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819d73e5a5abf2a76568e39081c7a369cce15bacae3d50e06ea665e275bc45fe. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXD7G2597320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96a4cd21dba610409b59a7f10e7f862ebabdd7fff2cbb3ca042021a19d3fe7e. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GXD7G2507347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccacd7af2458eb00c4857be8a370e362d0cde086b787a5617b28fdb84bd5fcb. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GXD7G2573897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ff6367c8de06ce69b2ea6362d6a6b2de8745432df37f4cadd1108fbcaef7bc. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GXD7G2558102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c20cb613037ce5238e9579c6e2cf0387dc80543602d330de152b4299a2807d1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GXD7G2564194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec53be767bd73d872bee54d0f22166d6521f8219d1a597405307e5c3ab85ddb. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/GXD7G2564427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb9e7b984ed1cd43202582fe1ea58c358f1eb119569f52f2af2dad68b86cee9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:56:53Z), 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/QT5M42546610.