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 0xf6b5880000311612594db0aa7b4a8e8b98c23786b16679d2aecfa30813e7b13c. 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/68600ff5-b7a0-4e23-9a40-e92ecec0cc02.json and https://artists.proofprofile.net/proofs/artist/68600ff5-b7a0-4e23-9a40-e92ecec0cc02.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 0xbd88f997bea4843e3274812e5c379b495b3feffdc280e0ddcdfe2559493e6dd9. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZNJY2035708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3711321052ccca32eb83ddac8a7eae6b4b38579cbec3e6bd6e9e0b25c56808. 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/QZHZ62252971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a998aed5924298ade6d60ca7d27f1224b648063300eab914cff9ffbd81d4fe3. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/RUA1D2489870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310b6ca8058a1beef54b7560e6e891dd5a8bbefb87ef1ee84ef0110a7c8009be. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/RUA1D2471319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefcc0a3a80825c1df8b99d125620033e113de2a679b9eda6460ed7317ae2bae. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/RUA1D2471320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b331624c328ae752cf222fdee62918f2cdbce2d1bb35877a7748cdaa16ebae. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:53:21Z), 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/RUAGT2403977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c18160f9a1524e78d1fb93cecdacca32942005748c2324d72598716321029ff. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/RUAGT2403982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e88e4764cd096f8b386cd93075a6bba2746f2f693c9e36bd35da3acbfad3d6. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/RUAGT2407067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49642d1c8e3b0e8649a78da21d4fb77e29ac5d22bce3a997acec6de940a1d2ee. 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/RUAGT2407074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ba9f79e11a801d0e8f3355e94abc3f3a094e8ab197b8aedbcea6f19c72ef96. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:19:18Z), 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/RUAGT2419855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2289116c8dd8ec2de5999bd365730842cbd01f0ff31dc89cfa39e25f0912811c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUAGT2426540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e9b9d56e8647f09ba5735a422f0676e42485cb8358b50be972ee50df77ccae. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUAGT2426541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7246bcaf1c934b66f85bdd442e4de856e8013668431c542ef3fcbfe45cd2953. 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/RUAGT2426542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd9779ee51d118c65cb35317bc5e875c9bc5e353ff62ae1f4c9e31546f3539b. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:21:44Z), 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/RUAGT2426543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09695277c5da0c1b0a5a7fddb67651b15a6b0b89831f6e822eea035e9a0e762b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:46:22Z), 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/RUAGT2426544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7ddddeedd8aaa9f9d07c73d87f35d27390f8b7ec58a26c47dd82814d749adc. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/RUAGT2453440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28863cbd8018cbf54f8a07d3e535d22cce4ae23137b3992c4727c01126da939e. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/RUA1D2511611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b4ce3ccff43181225804a1468e0e9adfa323837f4032f4ff4cefd0b8ed1e85. 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/RUA1D2553496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4b24474322543eee5cdb0c4cdde6554fd4692a26e05f1154ce1d7dc787baa4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUAGV2514539.