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 0xbaff63d3e1c6a3b99e89213879800b4a3838f0b1ffbaf5043e9dc587f3028a69. 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/f2d3d021-0ff1-4247-8af4-da1c65261d4e.json and https://artists.proofprofile.net/proofs/artist/f2d3d021-0ff1-4247-8af4-da1c65261d4e.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 0xa229ae957abb37c46b70a82941caab2212ea85d455c494fc43875bbac111335d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBRKQ2040027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357064c3388294a28cfcd51268c2ab48cb9d80333f3b97e0f8a28738e69e088c. 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/GBRKQ2040049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc241742d0f0af28fec53b6ab63878bb6f13bede08a6857f4cc76a2944061a797. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:41:51Z), 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/TCAEE1921810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8685e5f9a3fb6dcee6797904b0ee9298fd415a9455064deeb660d61b22f74fd. 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/TCAEE1921752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94bb7f1a43d5e109c0426b69a89960466a6c2577a80492d8efdef2dcf0ad81f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAEE1921694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6ca604a5401a7dadc61d2e285ac2b5739c3d8a2ac2940393638875ef1fdfa6. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAEE1921672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fa80f849a0839bfb9ff2026657231b86bc1eb2c54a038714086471c4c87868. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:33:19Z), 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/TCAEE1921685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed49b9f2b8dd570e93f1fd75eafc07b1b5cb2cd7ddb0603b42e7de408a3c26e1. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:59:50Z), 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/TCAEE1921660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1683969faf06e5e98409043886a499cbd412dbef10d88888772b0d7c83f2a798. 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/GBRKQ2039773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a3947f6856a2a1f009de3555a93bd31a0447ef97d427296a8e422423d157b5. 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/GBRKQ2039795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909761a088993ba0b8fceb0b07028da638cb384699173ae301243bfcd2f84b7c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBRKQ2039800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31111eb7c8381a1c9f4c167c6265e4cf96b7e6ddd53df57ae254f62bcfe8798c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBRKQ2039804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b3d8cc6d765df2e03715c864825f546edb6a62c0dfff5ff491e9c6a7317e7c. 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/GBRKQ2039808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f092fd1400db7cac85cf3b0be153cfe21ece8232e7760ccd13044476e128e00. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCAEP2065426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273ca2224e1dfd096ef5773e488189c60585692a1dd07ca6c285187c6451d5ef. 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/GBRKQ2039898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957e34a5a7a1b327b537cd62a702283874a5f163ce68729038d97098482a8a66. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USLZJ2069813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f736b21b8a80747d7eae50fe66397a4bf8c755fb78992a97556bcc940829bcb. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:40:13Z), 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/QZ5FN2146981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e32b9771b64c404217fc430f827c6abbdab563391e33bb8504dd5305c13a893. 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/TCAED1994783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1840c935b7769d3b42653c40f043da9933cc4b4880982ae1d54fd749a2151bd. 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/TCAED1994791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025d4f4b299241f979c62c0b25f4d5a588d11358db35af9850b482b7cbf62db1. 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/GBRKQ2039772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec9dc214deaefee158b410076deb339cc4c44d2dcd9f62b21b3cd08f059908b. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/GBRKQ2039762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fc8c3b64c7b76be2079962c9824ca5e15f68b0202ff232cdb18880f985862a. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/TCAFB2032299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec725d029a88a2156507766f5ee50d547fd2a3ce3d2a9bb640637e86c6d1f183. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAFC2035345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cca740604d6167ff07fbb7020dcb6d5ee4dbd75f14d04e8d2f6a3b2288c09c4. 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/GBRKQ2024168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e08a215b4dbc4a3a78197606cb979020814f0c0ddf6ecf358fec2838074eade. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:46:28Z), 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/QZ5FN2117751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04d3e2a060e7f9129fa4949bc1d206bc7cf6f4d6efc15d0eba44da97e17acf3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZK6P2104596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04d3e2a060e7f9129fa4949bc1d206bc7cf6f4d6efc15d0eba44da97e17acf3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZK6P2104596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269a168330dd2162cf2c8f53b343f2cd761b5841643f651d2f97d66911f2560a. 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/QZRP42112164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269a168330dd2162cf2c8f53b343f2cd761b5841643f651d2f97d66911f2560a. 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/QZRP42112164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1dca030254785c660892fbd4d27be412653ef6eca0454b85c129a2b9091b72. 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/QZDA82372299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb428b08275f49b07eaad66a38b085a37fd31fa42792b9655f7dbc0b14d0bd2a8. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZK6F2306741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba0c9f5b5d4faa68927a371a91f60b680b76ad780f0b807f32b2fb9bc12b7fe. 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/QZK6F2306742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbfdfcbef234ebcff863110750c1205276e4f73453e2f513489dc5949ce814f. 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/QZK6F2306743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59756b58e19735e85934787de6706e6db8f82a4555e67e78eb10f9fc607bede1. 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/QZMEN2483201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59756b58e19735e85934787de6706e6db8f82a4555e67e78eb10f9fc607bede1. 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/QZMEN2483201.