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 0x60b089dce9cb723a707a40a89ff2309be7ae1143cc6aafa0ed3fe35c28aa43bb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aba9c4c7-35d1-4c2b-bc7c-2d9cd13bf604.json and https://artists.proofprofile.net/proofs/artist/aba9c4c7-35d1-4c2b-bc7c-2d9cd13bf604.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 0x18d5cf4f33238c559cd4157b5c783219aab730d79c819023c242bf0b204400b9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNJX2300345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b45151917c01539b9b25e910a233d78e8e18eb8c032e06b6fde27d9016bba9. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZNJX2300342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ae1f2d16277ffe975404bf7168e8fb53c92c40a731717647472402041a409e. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCAEF1923595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0832e45d761edb0632b57d7fcb726dad007844cf5830e00fac440dbdf5aa14bb. 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/TCAEK1986270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fa352dc489ca96e1132a95c9a8b99873644f5140fed9986648318a96d5802a. 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/QZNJW2392825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d6b45c734b8f031b2af5edaad445faf7a26478e12a04d221ebd2fdf67b02d3. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZNJW2392783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cc7c9a0860b2586c65ad610f881cc15ebc05bf28cdbe59deef0b9d205d714e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:34Z), 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/TCAFB2004197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddc63b27924fa7110852392152f89c565794da36f7a2e3b997585aeafa0fa22. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAFE2016906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5644c4e70831199407f67df3ad76e47d497df0513e222f39933eb02100d3d0c0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:20:03Z), 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/TCAFE2094905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28c69cfd7f998815e396b394a28a7c941ee01dc76ca4b16b750425556bcc662. 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/QZNJW2392810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da37f02f9f985b365d8de2e6e779db656dc8a4d601b07faa07f0fcdc195ce79. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAFM2119024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9fadc45ee248e04882bc9d4d16d1d760f673110e8add2463dc2f1f453348aa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJW2392812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0790756823620c30780e041bd6fec4e2177194c725ce7a07713fbd46169ea5d6. 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/TCAFR2187136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe742d4a4699ad0de742bc12eb3350a6ab8a98b758d23c1de9cae326fa6ac8ba8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAFU2183336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d88f7c569863f584854e7f42b0aae723093e2e9ed6b4630a1917c15baefdff. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNJW2392794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d253a498339d3f727004891e35d01e48336b353c4b385948901a56563eaf30. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:58:44Z), 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/TCAFZ2235725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4541d292da8a55069194606f57c2fb311a4c366d9d27ab12f1713d2f76e1913. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZNJW2392808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398ae8e8669a44c1b412b6c7fbb29ebe34092093c974a1c03c8f9d2f710e8b92. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZMZ92353031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36a8af9a63cfc452f64f23df57453be0b6b276db2800bdb1478074978b8693a. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/TCAGN2246946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f76790cf18f4d9ac7bfcbc2d5f4186e362ec28008ca17a5baffa33309f9f7f. 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/QZ5AB2322399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54af21e0df0bc6094c7d3b056c7eeebb03da7fa40c6201f9ecff0defe51a995. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T07:57:57Z), 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/QZGLM2372039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4b4adf0914463635d104cc40a828b37cb860544fcb9485edc87cf3689ea26f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:54:43Z), 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/TCAGA2271565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f038b71e75ad61b97208c3cd8b372a287268cd18ea87c16d00faa5affc82414. 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/QZTVM2306498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfe07290e4ba56a2088209ea66cc420d8ab093d9ed76cc9e1b3dbf782bf7a0e. 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/US7VG2489121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2517ed1bebd9d783b61dcb902ef254c65f45237f44220d4b11f4e01416affb. 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/QZMZ92413381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf222e4cc1f68854ccfaec5b7455c5556b359559dc584b0235af453707ab5dd19. 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/TCAIR2464541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5135124fb5c1ed8fbb5a38c0905cf4129eac08bdebd49f3ded274a555c490705. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCAJI2577376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53577ca6bcb4925ad08531233ec78c29c2c7f9a693d4115c3ae2de74b9648da6. 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/TCAJI2577507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29252e6195e5becfee13d60b8244264ce525c73cf10292a31eb8c7baf22c3c9f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCAJI2578479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd9a795bc22fef1f9a399b813621627c6cbb708766a86114e513c2f5cf193f5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJI2579262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b065bad5fec312612185609249fee901aa6328fb6c59fae16fc41b23b780b4. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCAJQ2523554.