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 0x7aee5463fac451313b60094015f427992f92e9dba8041ac027eeb8d55613e2ab. 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/b064d000-a309-464e-846e-267b9f4a3045.json and https://artists.proofprofile.net/proofs/artist/b064d000-a309-464e-846e-267b9f4a3045.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 0xd883ec490f28e81ac5af131e606f434a35790ee05ac6a2b036ad18a1dc89e25d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/LBA082310080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511753f2666346af48e42d2f157e10cd921b0660dfd9f2fdd9788b30dfce3a05. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2406288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a86fbc6383f3fd4310f8e7331baeae3607b094576158609e38dc8f6bbb0bd8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRD8V2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6f36b84173c52f98e8d017ae7cbbbf51f55a66d4c4a8cae523a284438bcd7a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S2530271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca77504e53e92032c37955a5bc2c8cb21ecd1e8e1c4e31aeacb3050fec5838b2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBX722400625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b37a13ebb68a87a21147562450648513a6ccae3dbad84aa17284b3a5ba1ee9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DGA0P2428556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2b06c6a791f5ac65a3496c95435421de0d6cf22db7459a6a933374cc1ae116. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LBA082400468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275d4cdd7d90d9e41ac011b19088d89a10e31b65670f43c05412ae834c1466f8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0M2405883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8de62cddf5ae3120e9bf17f5a3f8b474b22985a433b0fb952170ffb475b4e12. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LBA082400398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272552cf9bee1329302558b4e4d4bb613f77aabdcb6631c7fdc7249cd60f4b74. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/LBA082400337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb781b22fdebf6e91d1665d6514e202bba1e4d323587290d8663fc8efcd7f7309. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/LBA082400336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798698ba99631fe763b52c99d477a000014ab417d850de1b214587df613a5079. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN82411719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01eca8f2b2db80d60063540079a8e271b5f7d323ba6eb3f36bcd8363535eef1b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHNA2429887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24657540c49fb03e1e224f586e1b2366704d1aefc51f977398f7e5783ecf4894. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CI2DY2300640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc9f827ce4ae97500e1ca1b9d81add3f310d9d65d544ca002920ad066d1a5b1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/AEA142302251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854753899dcdbca42810f24bf02cb3d7e683dc4eebd9119e8744a715efad0bf5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AEA142302205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82d69eb7256fe24abaa2a571d28c3bf992b77ed0a1b922447353d0817cdfd17. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZZ972415759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab10ec18e7c7d16b61391ddb6239a3b8cc9d96cbd6940a607c5d1e99080ea22. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AEA142301953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665f18c49ba5c6ccdc9ecae5c43c4053a549519178bd8c8e498a23e24360192e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AEA142301925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512dbb21515852c933f06b831e0ef4d978dcfdc9cf051a5df41d30d64a7e44ac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GRPA12300422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058f5d45e410894d627d2192d69cfbb3b9a41aadcf28fe7d1ba481de5cc3bb47. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA062371757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87f6f83f2673b0de5002bf7f1297891752d35dc6626534350c163285ba082f4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DGA052352627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ebdfcb6512ac0c09e0a4a500cd067a630d760446cc1694a47d4a8e63c8bdfd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/EGA1K2301412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c957f57dbc6c92a4d5a492c9aa164dbc59f64a42b60d03624ef492672eab4c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/EGA1K2301413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003fc27ff754810f8a752177d5b3d67161d1c00e60055fdd0fd7ec5c9ee4e630. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM72306214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645d871c9c57cb1389cb196623bdf04ea8587a580a6edf6149392437607182d7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/EGA1K2301424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd883ec490f28e81ac5af131e606f434a35790ee05ac6a2b036ad18a1dc89e25d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LBA082310080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a859a7a6d4c79fd1772ebc9c433fd189ffc9db721899219ff0ca6cb582b140. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/LBA082310024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80747cc0b384a07cb1638cd1d2dab99d3687b47b5ac1606d86d32804b15c4aae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA082292749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf4ec5fd981d96529c244188e70e9787d71d9a42a003a9bb8537284eea829a5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LBA082200322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79a99bdd5697cf90dd704da31f19cd2a45d5fc34d1adb5051194728839c5879. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/LBA082200243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b76da12eaeb67f267d5e2c3c40d2b570580cc36ad0cdf84da49d56df5b8abc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX452267796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19037fd18bd4264af2bbf01376395cb4b55cb50310dcfefcb752a7778e169930. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX202292931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2209a205e606d6488a66a271bfea82f4ec702299ee596dfbc80c78303f0f384. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US3DF2255921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfb20356fd0f661edf0d97a1e136857cc8a5bc315e32a9be96d8b2bad13aa83. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US3DF2245603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dbc2ee04ff7e849ead62f4312b7785bc8842255d655a8198b6c46c02d98c5b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9KQ2100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f40a1fc746e8117f74ad66c6151bf3419b02c3dd00ccb6494213f76b0ab6e3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM72119280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854b1e28fb1223661457606295b525dbbd1acd00f8b46fe581c7eac86af0ac3d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/EGA010550806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1deae316a28abcdbd011ba08b0de98eaa17471abd4f426b64d18ad3e44c24d5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/EGA010550588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f0942238c48188087accdb7f3fc208558918f0757dcd8141233df8399eede9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US3DF2152915.