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 0xb97dff4f9ecfbe7fdd4d69c1b9f31f00b3adeecde1ee203093aab35792cc69e2. 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/dae60482-1958-460b-8ebc-97f773e6b3bb.json and https://artists.proofprofile.net/proofs/artist/dae60482-1958-460b-8ebc-97f773e6b3bb.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 0x8b783a55524427f0f16e4420935eb35687e9b237ef8168dd2a24b03e80138b18. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:19:20Z), 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/QZ5AB1823055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8377501d7f1b829dbf7624c4803d7148d7118b63f05af8846ca26afc69494a. 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/QZ5AB1823059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24db99377d53af26f0a5adca7650036031d95b9e97265a845012b0133a2edb2f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZ5AB1823061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774df0e500bad0effa3fc3548bf9f2cd0c656a5e43619fc6d21415bb7f319c04. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZ5AB1822897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1c5b9cddabcc93ba2c78ed2467628d5c4c2be14d09c15a7614c06dd216e359. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:34:09Z), 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/QZ5AB1822899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca83c188749c39de9e4c838a0c32744994678fb24c6cff4475f84ea78702396f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:53:59Z), 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/QZ5AB1822907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bb95896a5300c469e6d2603740039ebba3c298650febfb66940a0b09509be1. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/BRAPI1300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7cd2d47c05ec0c56f9ae76fc7af95eda0769b33ab82e72094e84ec76284bb9. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/BRAPI1300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e464d10a116b8e86247b7ff233a8bb3215a4bdc9e493a33626eb5fc716f023. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZNJX2149948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e3b29284f06d71fc695b3d17d0f02ba51f8b02fa7eefbbff49b0d8a9e27f30. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZNJX2155702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ae99a57148a2b1166f96a56dababf2328b7f9f3dc68af47b9d0684907f1333. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:00:23Z), 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/QZGLM2414945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2cb815b081aa3f39348965237bb341e1f27a5c6a48915b2fd643962d2254b0. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:04:32Z), 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/QZW9M2464927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fc9bcc5164fb74e3d6c968a0c2291d9cf4eec3109916e9a553e49319897c24. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US7VG2587981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970756de5729755dd0dd50ba190f00f92e428c65c8a73bf6599990583a6599ad. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZGLM2589376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811b7a18c65826073220b081cbfadafdddc16f503fac7e2cdcdd9556cd9b4451. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:44:05Z), 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/QZGLM2585714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa64755bb636dee5f7104b057894a9f3c0c5b3f36b47edc0b81d9a4904f1057. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZGLS2506367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444e12aca497ebf35d21d127bad387b7a5556b1e3a36cb8d8c9855e1a00abe4f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZMZ92513087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769cc41373bf17c13694f2a01139271ac9b0063966e191760b0902ce1a334ec7. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:22:50Z), 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/QZNJV2536693.