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 0x1e8d7e9e61f885c4c602deb6b4f4eb3330be2066ccff255ebed8d1a9e8f3a2d1. 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/e41ce476-e6eb-4141-a841-0455890371e8.json and https://artists.proofprofile.net/proofs/artist/e41ce476-e6eb-4141-a841-0455890371e8.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 0x825ae1d197eff88d5bcd1136067e8427ffae6a0f596d30e12e802af7d52814d0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CAQ8S1618559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4aa9124a101002c98a3b41a5d3e0bb7cd94e7f7d015ba11e0c44b2a88af0412. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CAQ8S1619802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf11c83ffe3cbebaab2092f9a8aa8663828fdfc7b16c13ab3d1639f7f0ea3155. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:33:37Z), 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/CAQ8S1620680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab98f4f24f41fecb983d79179f29341e02cd72440b3ac7b893e66abab9bc879. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:41:50Z), 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/CAQ8S1622171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52271a89366f96e0a2533a095add26a3572db2174ccf1cbd2a63c9a1bd3eb677. 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/CAQ8S1622440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f668be1945c4f91f19cd1ce33dc97c39d3a9b68d123bde8823f98eaf8a3c725. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAQ8S1622508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48343c69492eb5213e44e735b67928382b63d08046f9e6429d6891af25fcc645. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAQ8S1622618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d04f2ff3aa3f4b257fd07222072e3dfb58c12810928f80db3f878b17c54b5c5. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/CAQ8S1625125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce84a19537f736c2d163b36220bf050c60148319261e256101c88811a3f31151. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:30:25Z), 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/CAQ8S1625608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb230fd39b2912a5aa1dff57529fd6dcab12604900e364ae145ced98057e2de11. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:28:21Z), 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/CAQ8S1626741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e56c120797151be1cd5ac5fe2bbf5ad3e4dc7e5d5bd5ff16ae369b8f7ba305. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/CAQ8S1627178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef06e576a488142616fc10f55d9bdaf8f42e9b82bfcc2ce93b8751897f1b5f81. 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/CAQ8S1632845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cad4110e566c3e98a7c8c05ef26af845a14256b9b91f552b8d64ed37392826. 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/CAQ8S1637542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9437645be39c2e4590128324e5642764218edafa5e847141ff7ea3bcfa4cbf. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CAQ8S1644737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09564443d4e4b779f4adf11622049b362349837cb706e65a06e5d0a873d35b9c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:00:20Z), 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/CAQ8S1646005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167b275a49fc9bbafe0cb7635a28fa974e5e171820f227cd48d2626199d18eaa. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CAQ8S1646210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a55c6127e0fe60143570b25e44b77d54f58e5437ca1a081afe3585d0df6d6b. 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/CAQ8S1646487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac077f555357f709e8505708d3e8d1324a602c6ca97c35224b246e846470357b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/CAQ8S1646717.