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 0xa4e07f05672bdf653d12bd62a6049937c38f694a2af5860f5688a52589b18a09. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e806726f-db74-4145-8eab-8b7bc1c13f46.json and https://artists.proofprofile.net/proofs/artist/e806726f-db74-4145-8eab-8b7bc1c13f46.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 0x4f28b1e2e2baccc999b59a53b818e18575eed84f41ea87db100ca5a64e528f30. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:53Z), 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/QZNWR2406429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14ef459bb89220a42ce5bca4c7bff48388e54dd0c2e639eaa3a3d7f82bd7508. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:02:32Z), 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/QZK6Q2296027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45617a51d7ce5a9c03fb2550888f6f2172345a1e85dede9ed531fdefe20c5133. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:05Z), 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/QZMEP2251253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d36fa026dd170c67a3116282a3fa75ddd104397427ce16b4ce654cb43b8fc12. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZNWX2290893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf1a01bbfc3854c41498af7fb5fb525eefdd49c030a67d4cb7278416091764d. 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/QZNWZ2279084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc270154ddcb7d3d57d3e08511fa27a1e011050c4ce1969732096ba68e88fdd93. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:22:14Z), 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/QZNWZ2279085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53efd6ee8079c0d15f8819af32e61d1709fe317afcb68618ba7da1b9b09e0cc8. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:55:31Z), 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/QZNWZ2279086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4010356d87872a572caa5673e9dec51ff24f158599ca114936528fae16cf137. 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/QZNWZ2279087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185cb248275308d8fe4f835f821f857d9bea0f0b829b825cd9cfa3c394458f28. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNWZ2279088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6795de99f2826d707ae6a94a864e90eb759a367879c7c8715b4ccfdcebedfe22. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZNWZ2279089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2f805d554999ac4d61564754dcefcef5be6a8f3d6a401e3aa4eb89179bda10. 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/QZFZ42328097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135c110e6e520284e0b040e6fa3596d1e512559c0c670f31727e82d8fc4e5ec0. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZDA72346159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa084b176e73a1e1661d351e494d1f6110b6ceae8acca2a7591b6261b352247b1. 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/QZHN42395939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30f286db92773533555956b71750b8f5da7b9c485318e3413addece43eee175. 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/QZNWZ2364020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928334bed3f5bb190db13162f92a1ce4b06732ab329eaaa66383fae89c30d078. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZMER2405158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4e68f00fc85b910046e37aedc6a4c00fe044666cf19d60ae45cab10ded6572. 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/QZK6K2422841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f46433bd10c75b4f19e1fe3913f514434398dee68901a2cb316e1bd10e6453. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:43:13Z), 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/QZK6K2422842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2619dd84de5013253ce249a0f1529d04c6f953b2ed7a6443fe6be474261bf809. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZK6K2422843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8d0f742970722b647c9646e3a1c368fd18d75d033b8c8ba093d15cae413a20. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6K2422844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e4a0bcd5793bd93ac9920c0eee0ca0a9504361f5f5fd4881f7ca4410d1a9a3. 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/QZK6K2422845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53915b37a3af7a60d237a220dba33883336da222a18065a8c6917fb00ad077f8. 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/QZK6K2422848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0b5f51d69fcca3b77bd2c9fe8cf2da524ff7161684c4e1665c32b5b8065df0. 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/QZTAX2433714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25067402a46a1b5ee761980b20f87d657d4a2f1a443df5c02206b108047b7a3. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZTAX2433715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6af889fa4a9cdf8c03918789664f9582c9eb975c4f41e5e0b2a4a724492106. 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/QZTAX2433716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe466c186cd914c968476a43d06f1262dedc52560cc4b6b6e8fd21eab31d7b1d8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:15Z), 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/QZTAX2433717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2a487f695e80ba99e16e01d0d6fccbb33fac66085c0100b1b58fd841746391. 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/QZTAX2433718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cfdf797fa2035eaabdb31aa1056d29da228ee9bda0769a9816f2fa287475f4. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZTAX2433720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4011016b84e6b4fd4d4cb9bb5a20556926c3cf9ff00906c93e946a49975a4513. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZTBD2560231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c014a2d28b9c3ca382f41afbc7e69907c7cf147f5e2cfb38943565c48a234b. 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/QZWFV2583427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf755a577f4d4bbf22b68d8e966e355b94ab0eed0c8f6949d69bf8d928b31ec. 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/QT3F62571320.