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 0xe08eab6956f5bfc2f01356e422a9fa735e7bc54e98eec58ad1ce4e21787f8e0a. 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/d4257536-924c-416a-9fd1-897e665c1ed1.json and https://artists.proofprofile.net/proofs/artist/d4257536-924c-416a-9fd1-897e665c1ed1.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 0xbb7decca1a27972bc2c8b5bb710e71aa9d5385d2a0d61cabdf26c82f30cab647. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:09:23Z), 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/QZK6K2287802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa7dc5bea7b7d9d9c637dde625af3e79b8e6412beb8fabcc78fcb01c8eefba9. 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/DEZC62212809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6e770ca93b703538dcd83440444ecb4885063fd9a2731c00b5960c981b7b4a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZDA52318069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf038ff802e8c5bb3f71ce3b80bed998ac50d68a97d88175da567dd2277a337a4. 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/QZWFN2369009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc0ed5d08e4a5c7e496fa22e80f7503b7ed1f9fefe8826951cf7faa0fd33452. 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/DEZC62495338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0b61d4c77d42bcbd670a1b92b3cd6e9a7217875c98151e00c131e42fde10e3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDA42445372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55569a7e87feed3ee1b8b8a22da96f85440e3bc6fe1c7ffe3cb90a43e7a3c2ab. 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/QZES82475564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc503bbf6250542cb6d1a7fd9a8a1a9b3b115fd05ac28c0965646f5ddc6455c29. 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/QZK6Q2422590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a03d9b385e2e795eeca058026e21982209cae161ee4bd174fcd4e1b2dbb4cf. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:41:23Z), 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/QZK6F2440711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dcc8b5d943aff56ecaa7c741eb651b6a991e49e5cf23996386d2a846d3a40d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWY2420337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d2afbc068651dc0b8dc91127a9d972fb1261c10d0f830aa5e2403d8ff6a203. 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/QZNWY2420339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c95a9fa2249af7915e4adfb6a40a12c2ff9d21018bf70b01da3b904e04b28b4. 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/QZNWY2420340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabef748caadba22d0d91dc9c969bec78a7e2fb5ead07c631b817ca5dbb03ac88. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTBD2453993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bf67139cffa595c98f03eb0d60647dba75b6dad5f53b6a327b0c229bfc8fa6. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:56:17Z), 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/QZWFK2472747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e435f8f6f40bbc4f7470356421653a1f97806ba104e031ce5284211d1c39ce3. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZZ7P2448906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc5846327386c276aafd9eaafc66724c7d2928bbe6dc57dbaae2cf95257737d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:36:00Z), 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/QZZ7Q2442879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6c07e0c5f43196168fc36eaa60bdc504a92ea07088a9692db7b15974f64614. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFZ62564959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2b3cce8a316ff72bbc9b0ac90c26e15f8bfb6f4801890835f003efd3f3b211. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZFZ62564960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10d8e907a4129dbb8725376d2e3225b94f442e7259992965eed944723c0b282. 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/QZFZ62564961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e1446b878d0602bb95f5579027d16c5fb2238ffbc9d31b7b87700ff65ec0b0. 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/QZFZ62564963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9e99cb1b1236259d52ac62e1c556fe963bbe676d15e5e87a9c926a54681752. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZFZ62564964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b9090a3f6dcbe5238565ee264c3a0b41f851e78c4340e4461dff3c427371fd. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QT3EY2400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e435f8f6f40bbc4f7470356421653a1f97806ba104e031ce5284211d1c39ce3. 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/QZZ7P2448906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55569a7e87feed3ee1b8b8a22da96f85440e3bc6fe1c7ffe3cb90a43e7a3c2ab. 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/QZES82475564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe574e142c160865adf56037d5255b794a68a2b1cdc03f07cc2b4f0c10f9e30a8. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZFZ62564965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd0e534e946ab8f0ac958859a1bee118fda2e876743ebfb10c44a9ab5191fef. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZWFR2563922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b278167a64b0383b0ee698c2834b6a2d54c079f9b4377b83898cd6d95ce3aec. 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/QZWFR2563923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34398accc5d251b99a017fb294f025c16cb82c6c86b48285ddfcfc402a74548. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWFR2563925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600cfb8cd59694edbd4fd9c1e28eced469b98612ec86f7a435705f2a817a769f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZWFR2563926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e135cd7acc1653e9fdda412382f9dc0db9efdf3c94a06c7d5b2e392a22994d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:25:06Z), 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/QZWFR2563927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fa288888807111160be0f185d90081aa3f1c3d5d36f419cf75314f4b2418e9. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:05:23Z), 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/QZWFR2563928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d2731700856f32c51f3c6f28f4b22c43908861b094280549594bd33c1e95e6. 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/QZWFR2563929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b2be701ccdae6a0a7a8a78f85fb1bc2c2063211c63901868475d1dcd020d51. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZWFR2563930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95d279851d02056cc81ecbd91a56ac0793af7f40ce8f5a0715cd9e1c9f58b35. 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/DEZC62458360.