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 0xa488a90bcb804cb8d8b9b9f7a8a109ee053e2102c3e49c6d7bdc7c930922be45. 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/a88fc576-f050-4ce8-9d9e-2f2ff1c2668a.json and https://artists.proofprofile.net/proofs/artist/a88fc576-f050-4ce8-9d9e-2f2ff1c2668a.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 0xea514a99c08c782eb9a6e323110eee4d4b972494b0294dcf4b6d492e1ec3cf13. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKUM71700183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8440f34430fb97cf0ac7e9d162f7a60e8d4acbfe101865a235c0a338034448bb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DKUM71700194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f94c51de0539dfa30d734035770115997bfb93c1e96891a3540f13d2ce356f. 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/DKUM71700195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26241b1669e5c265b01421f31960dc723eadde9b3ecc6f3ef89b755cd28a7ab. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DKUM71700198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb8418dbe2f95fb13ad1718fafe4e3f71941ff9ecf328bd22dcfdd734377875. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DKUM71700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52888cd90abafa2c4191f472f9fb2263f7e7a9bf02135b8a21dd2f50bd0fb34b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DKUM71900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026eaad684d8969e6b9016669da8607856473537f085b28cb3acc51c14634fbe. 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/DKUM71900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835acef4f3015b87c32afedbb73544300816d76d5a4f5f6a5bd4358acc37c064. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DKUM71900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd151ec3bc7bcfaed92a295b9fee25dc7dc9d1a492c0f8db01677df89e42e0c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DKUM71800781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd089caa1519ffc425054c926f73c71f3b1ceddd8786965b0362b23dad369751e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DKUM71900112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fe5d8546e77f74f2893774c64553df449cc6ba9208440d77f312b4dba236d5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DKUM71900113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab465f367e4dfc2c871e7e590816f4438a8736939c8714cf8d2a115205f9c189. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:00:21Z), 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/DKUM72100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b85d7bf980ae406d68f188c5ee91c05f2e721e2744511d526d75ff02b6cbfa. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:26:09Z), 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/DKX452300003.
Gooseboy (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300f69eac89580d0812e6bd71c3ebc9b8329647d6c415138dd81d10125d7cd22. 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/DKKN71903401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fcb6cb51b7734908fcc155870632b5c5efd21e6964c74816302b5b6b2dd986. 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/DKKN71903407.