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 0xd4716783e4745e891ea47a5746ef615c6ff8f02fe14f116334e01bd8169b1f32. 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/83040785-0755-4475-9407-dd70ade40730.json and https://artists.proofprofile.net/proofs/artist/83040785-0755-4475-9407-dd70ade40730.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 0xb22bb1a0afc71d5441c0fecdb454567dd209fc6cc11080b937e39c7efa4b1187. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:49Z), 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/QZYHJ2449454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8504e045ad6344698cb7e7bb6a5aca49d053a38deb47590b628ca2c258f1764. 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/QZYHJ2565813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f76c293187a01f995ef38b082fc93ff1bbefdcfe5034bc3340158fb73fd0b04. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZYHJ2565775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02710227a2db8f6a92dccc9a27cd15ea60a78da77c88f64b9a2aa989dbb4ddef. 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/QZYHJ2569230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3efbed1a991c8264f2a64a416a3b1079c80b0e30c0580f226ff07f4e041b983. 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/QZYHJ2571645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908b260795a304409c70d366811caef9e5b66110fb20f6c1227f692aef0b73ef. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZYHJ2571204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9ba7ebdf0d3c6f8b148693cb231cff9a4ab18e06633478e40083b065e03a0a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZYHJ2572033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9e45063bf12e57a9d15288ec12fbe0ac5b987e00240f4191d96d38c3984fa5. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:42:33Z), 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/QZYHJ2573584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8fb29714549ac1540176e7df63e94bfd7d584f436a7813a301b7a1b978b23a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:22Z), 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/QZYHJ2573592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d12160ba6a683d6a8d36eaff7bd79c74a53cd3799fa68d09e1b99e5b4b56bf. 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/QZYHJ2574888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ffe57b4353c173fe5b31150930b261b3f7d01f2a7a78cf7116d131124e0672. 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/QZYHJ2574886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d33dc5d5102bda2c38fbb724ea24c0f49d9f3b3d58d5fe884db17a2ae21d3f6. 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/QZYHJ2576406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcd86348c049b81f3e7ac889e2cb91e79e3dbfa6b98b059db799080771f12db. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:45Z), 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/QZYHJ2577233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c71ce74f303916e8c4fb04aaa6f8dd554da19ca95acc63458330bce622d7462. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZYHJ2578811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804d506d0218cffe010975a5403198563174a00fe154e4b28110a446b814c190. 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/QZYHJ2579945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365e8841f8fa419469025037f5066b2ef19dc7aa5c47a14ecd631e969b3b3217. 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/QZYHJ2579940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fe39c6cc6c084e9270940c03473c4fb741c51836c3498fe92d45d9c52deca0. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:47:24Z), 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/QZYHJ2580135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0034249a1ba03275c44a35d4ec0022d06e2356ee39aef26430ae02d72ddd2633. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:59:01Z), 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/QZYHJ2580132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a769b1271240ea026250afb74b922b91bd09b37ccb10c09e54b5e89f32cf670. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZYHJ2582043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bc7d33b0c27481429717274c15e1d5c1a305c9801b5459b6d73ebc4a58079a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZYHJ2584309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec7b0762fa1946c204a97c057628df1a83153f2b3badec748351f74ec114f25. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:46:15Z), 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/QZYHJ2590059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198d7b0a7c9fd4b1b75b4afce3fa239871d38b8b3c478757315b47cee9b95ad9. 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/QZYHJ2515849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc7e3256f17f369a6dc3495110ea91fd0d8b481e8e8d28da657a8be3d468dea. 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/QZYHJ2515848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfaf8e13f5ab6dc3a1825728b15c6e69ac3b138c95e77cf236cf01326eccb54. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZYHJ2517984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3fb0c30be8f434f8733de7f941019a78d1884abaf98a400334311a76dba3ed. 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/QZYHJ2517994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8e2c70fd34f574cded384d577b7bf181ef03a972a6faa32309dabd6fabefed. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZYHJ2517983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036670c83202b4224e433c706b1f3d51cb01d1aae1536fba496c74ce4a5ba238. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZYHJ2528607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddb58ad78a174fd94a1241ca2bcbc1852ff38cb7d5e74b7082d471651934628. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZYHJ2528610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d48ab29ddb3ed2bb2727f8d029f083c0cc24c77de401fb2acb3356609b63a10. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZYHJ2528609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1761f87933569c433dce1440253a76d4635a7e30ec0f3500e7771e13e5025113. 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/QZYHJ2536197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a6149526194f63d1a489a601e76e6ffcd05378cc5777762b6976f027644ad4. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZYHJ2536284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7538b017d2185d7d27c759447096f084ffdb34e5fd783753bc14859829b9ecf4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZYHJ2537032.