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 0x4a199179cbc2518016562ba35d9fb6adccb7fc5a0c0ed8d0b9876aaa4b882ded. 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/9eb73218-4d64-4c20-8870-71cc185c080a.json and https://artists.proofprofile.net/proofs/artist/9eb73218-4d64-4c20-8870-71cc185c080a.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 0x7c85069d34967da0bcee46aaf60160cd03dbedcac3d97ec47caa8d15ee061a71. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:56:11Z), 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/GBLFP2534905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c13f71813a7444be705e9b2c97983bacfba7a8367bccee8a0ee8b2742007a0. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBLFP2534906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4cfb374b5ec29c0605b2087ed0c8f91531ee89bed9aa10387e15c91e579f65. 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/GBLFP2534907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1efd899275a2d1e93aa436bb51bbdeef8cd1f5da188b2601e50cf81b36e446. 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/GBLFP2534908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ffc46586acf314414d4d614ee1e709e0cc7d6169598f7c70af1414f5d30d68. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBLFP2534909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a0da9fd379f824bc8c50180750aa38ea6ec1b83269382d1e0441d92b33c1f9. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBLFP2534910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2657621dc2c39ef569b423c09247de2dab0e99057bf92313de089583b25fc0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBLFP2534911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76ba8b8695279ef6fa120fbdf225ad780877e028337911ea2e7e44bb64dff45. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:36:03Z), 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/GBLFP2534912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b1b1f9f09f7475f67093bd5d3727b9f7de062f2fcf13381db01bb084acc8dd. 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/GBLFP2534913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbdd0439ef7c18765858188c66e1d9269e39443b0cf7a205515994c761703c2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBLFP2534914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65e567a515fd14147e481443d51eba675dcaf42125235023a85f64ce9464bfc. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GBLFP2534915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5d8a7680b041b8a3a9cd75082ee4beca4e51e84d27e28f5cfaeed4b70532db. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBLFP2534916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e4f388633f0684729034f2f1edc7c4a4040100cbd159249f71b22cbe9809c4. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:40:15Z), 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/GBLFP2534917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2baf69fa40f5a42a6398c06f339317e37129a5671a306d394cc4dfcc350693. 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/GBLFP2551889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273f49c3017e05cefbb031a5561a15fa07d6e0ec3f913009e1e5b0e59d150e3a. 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/GBLFP2551890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda45a7ea81c3facc652143e442c47c8c7e70abd05a9256c09ba2ea788cfd6cc3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:33:28Z), 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/GBLFP2551891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a4154481af913405ca53407397d00259a5369d41696c5b287576e95f01754f. 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/GBLFP2551893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ada75cb281f22568338743c237b7d4e50f5372446b5e2c60e76436109dabacc. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GBLFP2551896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d05ea1879dd0c10bef49abb59021a9052d874e07b2bee66b077941aa3850cee. 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/GBMA22526401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b387c1b571d07c609adec38b0e26b9a40339b990f0ec36726e240325a51d0f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBMA22526402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d3b83ad54a1dab8e8a42d0aff1a893626932c72d7d295f44f66a483b0c6b0f. 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/GBMA22526403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dead3b7b25961fd4d6f2d5a9c1ef479f7fb05eac9b891a6657267cbc4527080. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBMA22526404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5780d5addbe92a5ae81c3d31f3971d25a0c0b334c95c86c373f83145c7d33b22. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:02:28Z), 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/GBMA22526405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec1a3c3be773ab5cca82c502aae66384d66a9390223e93a1c12b9fc26b7d6e5. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:03:01Z), 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/GBMA22526407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3744d4ecfdbbaff06f59287018a09e89bfdcfb54e6bc695ec70c254eb189db0. 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/GX53U2542630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5224db6f7ab1df1b75dc60eac9d48046ee2b33a365b0c9ae8dc1f6425f198e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:58:01Z), 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/GX53U2615935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cf808fcefd197c409495330800dbcb6a9d3fdd86f7f640c286fffd9fa889f0. 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/GX53U2615936.