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 0x65bf88cdf7e864535ddcec5818bfd2dfd9f131d0f33fadf960030c1488c5f6cb. 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/b6f20450-cfa0-4a51-8fa6-125f4d1d0337.json and https://artists.proofprofile.net/proofs/artist/b6f20450-cfa0-4a51-8fa6-125f4d1d0337.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 0x30eb3ed0061ad43b08d3d8c502b4653078c97a586273ecfc4eb8a174bb7b0537. 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/QZAKB2352163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024d699cfeceb89f65f048246a017eb932b13cf4f27fca60caed9bc07a6d41d0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZAKB2352164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d42b9d0bc4956526c39da98c5519c1b3813bb9fbda7b509d98a9fd8720e8853. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZAKB2352165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04d17363a82f79181440c059a878c89c7fa9745dc2dc062c68e823dd8189e48. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZAKB2352166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe765b222b130feac48105d5cc6da9921738cd477934fbe4df44198e69f1d4866. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:53:05Z), 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/QZAKB2352168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1631605c389c31adf4963e68c6fd64818cfae0fc9ca26048b3255572644be3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZEDY1800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424d06c0e2aaf25b21c98ab05c83442e23c7b2d72e9ac0ecf27025b5c167ef36. 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/QZEDY1800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf899d491caa5fc5383a973668d8d7dbc476ede5cbb40f18b389ea3b337a158eb. 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/QZEDY1800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340468a50dc1f5d3797a8009e88a37fb37c49b938ec9ecca50e3bf229d185368. 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/QZEDY1800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539bd1c6d0e9fd470264d90824ba3e030b225cb1a521aa254c14a8a295817fd2. 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/QZEDY1800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb871478aed848860db7e7224ece69d8b92d4e04f9f2f222bbd13626a50f3f507. Chain 2 (Bitcoin): anchored in block 957012 (2026-07-07T08:27:05Z), 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/QZEDY1800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74a6609a3b1db025a5532b315d4635a0cc040304c537e32ec7c9431af84ea8e. 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/GBKPL1897320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a7d8982850a8e7b8b9967790872498f849ffcc286183df9c519715dc3e30ef. 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/GBKPL1899278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdf85e79c0b64c1107433c0cd1efd6e1426cf2d9d2dcba7b6ed08c61a71ba5e. 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/GBKPL1800942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1818333c964723b0b0dfa7b9029b491335678cb10ada81f0de08dc8d64eb96. 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/GBKPL1801124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc087c5937d11914499ce9b83c5d4e060e665ba6ca670a059b8a9276beb8030a4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKPL1801123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c136b8fb1bd458f85a4da3987af3868006f3beb3ae18722a03fb01875e05469. 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/GBKPL1801125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064aa57f68377b6c272c49e14af392c9c2c88b9e65341de2aee52ab724d7cf66. 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/GBKPL1801121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a453d9a212d9a157801e77d4adc4060d77d739505d8bb6ae095abbebbee4220. 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/GBKPL1801122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eb3ed0061ad43b08d3d8c502b4653078c97a586273ecfc4eb8a174bb7b0537. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZAKB2352163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d42b9d0bc4956526c39da98c5519c1b3813bb9fbda7b509d98a9fd8720e8853. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZAKB2352165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6a2ca19e8f4c4c98964ac7bf21dd7724ca87916867d765ed6dcd1ac435a4c2. 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/QZAKB2349352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dc03d09a5d5b39f2dfde494ee4c8062d754744bce95708195454754599abec. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZRUP2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2f72ce23bb6cb12c8da508fc25ba1032568a21ab9e25d97829e41b2031b927. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6N22124970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6880c9438d8985dbdb60d9730d114e4b87cf4f86a7895a21bdf39aeca2241ebd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZRUP2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3995440544d30a945ccba8db913f4ffa7a0f0e62a7a98c2b683e65a6a68f53. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZRUP2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3995440544d30a945ccba8db913f4ffa7a0f0e62a7a98c2b683e65a6a68f53. 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/QZRUP2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6880c9438d8985dbdb60d9730d114e4b87cf4f86a7895a21bdf39aeca2241ebd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZRUP2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2f72ce23bb6cb12c8da508fc25ba1032568a21ab9e25d97829e41b2031b927. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6N22124970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b100cb5375a8cced8d137a60def33b35fe745c29473d6f015f872c37722b40. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6P1906095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdf85e79c0b64c1107433c0cd1efd6e1426cf2d9d2dcba7b6ed08c61a71ba5e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKPL1800942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a7d8982850a8e7b8b9967790872498f849ffcc286183df9c519715dc3e30ef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKPL1899278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74a6609a3b1db025a5532b315d4635a0cc040304c537e32ec7c9431af84ea8e. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/GBKPL1897320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff56304df8c56b820d06a89e845411811e229fe89d369e9b90a93465fa7b19f0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKPL1792611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189f9cb11886e9e122324a74110208f0297099c979ee62b788119a0751c52b96. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKPL1792612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580c2cd34af39ee0e5e2fb28de7509fd91ef170aa57464bfcc60dee1e148db59. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKPL1792613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b51c415f7014374532e1eadbbb62692597e9ce36c7192a399c283ed56ee5632. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKPL1788803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671111725eb31af669c96a4631559a975e54a6035c7a1309f2759b259d17c33b. 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/UST8K1637352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa260f9f078ef526a1671e5f66d184b7e2616f1edb90346625a18e8951a0c5765. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM2PV1657301.