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 0x5d8d587e1a013105694f7207ab4b339fdf1807b2645989c6fe98732c0e089dfa. 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/f6d8fc7d-814f-4343-a849-1e666d91d553.json and https://artists.proofprofile.net/proofs/artist/f6d8fc7d-814f-4343-a849-1e666d91d553.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 0x76df7d1871221df6fd16aa5674bae2dd1c99f8dc483f265c1a3dff2b12948dcf. 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/GBLFP2554786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1430375081e676fd66f815fd4e53e95b5db4c2c5fb3549ffac43b6bbfd044e06. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBLFP2554787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1fdc6d03ef96f006c754dd61d325ab55020674c16213407c5e3eb5b36c1552. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLFP2554788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f41e5a97d0b6967be66c88c0e4344cef6cc7e62cf884d2e154d7870508bbd34. 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/GBLFP2554789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ca350f5240b96a117bc9653c0c7a8726732e5e47004ab4bcee7d08e6c9a6bf. 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/GBLFP2554790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abafcf08e28bc1efd399d720fdc57c0e0b8603bb3d9ad3c5e4032f1dfe4a066. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLFP2554791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efe322f7030680871b56ff80044b306973be1083841d03a5e81408c3f1a5768. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBLFP2554792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede0fb9e1015122efe237e4ec5d10f84233b0f1fac79f8ba3087cdd84a650c1b. 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/GBLFP2554793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c5429c4a0556c71622afcd11190df5c3c7a26106d52e673e4e3e9d3774f89d. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/GBLFP2554794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d66589cfefbcae6c1877be0b4f128657950c20f8924b14c968e5ea310d7fa6d. 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/GBLFP2554795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcba59dd63af456a486ef03a3fa43766f3d72dc0a462f08aba3a85a1e977fb5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLFP2554796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37394f8812e2ec2e55792199a10fb04da0d7e3198f26ca982ba885bf4eac9c5. 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/GBLFP2554800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc35650321e523128d12bbf185a6a54e074661bb7bc9c2986eb50fe3ff89c78. 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/GBLFP2554797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987590e80b33618422c121bbf0f82108cf8d8733bc837eaa3133bdeafcccf6e3. 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/GBLFP2554798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2e72e7611e72db2892aedff1052738896fe75f62929d495b150dc437bb1806. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBLFP2554799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e30b6d82aabe54b2d6b369d67ae0fac632b6a0691c0c479504160c5bc162d3. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GX53U2523035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75222115faee6a71cd808b14d458677ed004c811f9711bdc4713a3abde6589c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX53U2523036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e60ed6b1ad1bbee6327664365f7fc466f3028a6c1ca81cccbf84217e6844d70. 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/GX53U2523037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b235e8f792c5812e83f9dd062af3c843fe4b470f640200418c4711a3e2fba1. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/GX53U2523038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882951590a8116f7ebe6c734e782475ee1b19acba2175cdcc452bab2eb8acde6. 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/GX53U2523039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5743cf7468e204d332767a9a78e78885fe918df88df023c0f3b2038a55f60139. 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/GX53U2523040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02672b984b019fa0b7325bee2b2e06852b70324b7ce2d753c0dcb27f6bb67845. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GX53U2523041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc822b6a12ed68c57cfdf095664af545096969f3b9b1dd90246a3cdae9e211b7a. 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/GX53U2523042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db12516e09ccc882cefddade6c45e8dee372619a2f282f0c16a9583bb95c81c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX53U2523043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66ff3f6c622c44b88c3e59f356e84e9889ba1f5c32f5a39459a05162dac2e27. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GX53U2523044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44e62763617aa71abc3e1b10305a8a26d411b203190e6ecdb3c2e73885e9cdd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX53U2523045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a4971d9f60c6f79a4dd8fa84b18cbedba9b494ebfbe38fa4acb75a131aa12f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GX53U2523046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf10b49cff18198c2e3e93d2346f87125af3d09e477a07da8d04cf4e213d8919. 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/GX53U2523047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235a4fc3a203e9d8c3b25b170e3ed3789bf498b567c0bfbcf5c1874533b0c1e6. 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/GX53U2577683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af9810955ba0a762c7f4e06e21facddf8213992f7b3d7b0691e072dfd63715e. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:57:15Z), 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/GX53U2577684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac78650b5fadeff99ab4fbb5cbb77b8020217bdcfcca5b126cac21462ac77c1. 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/GX53U2577685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fa3982e09805187198682448761690ecd9f496619fc2222377800a72dfd033. 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/GX53U2577686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cff7fd07c2484ef4f185598779207c571c58e0e86238aa64c4ab5a6f927262d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX53U2577687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc652e47ec080e03e15ef697b6bd940d3efc74123c706a57f860d7f8bbbcc224d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GX53U2577688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811606b141e2b786235de78e7902f965625c29e7af39e05987cb378809bf81fb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX53U2577689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886ce1d409a59b92c4a0930f8979776425628c079d0917a0fddb2ccee6dbb32f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:37:14Z), 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/GX53U2577690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec9020f3652c13a96382c60dbdf504eafed58575ee978bb4c2258ce9759ee44. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX53U2577691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8fb0df898f4781749cf35239ee45cde717f397372de8bb9035dfc1a5967cce. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX53U2577692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a2f437ac3bc2d733b3e2a40d9cc282de2e8ff096d0e1d2db687d21dd5f00c2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GX53U2577693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01de91c9cb51680f94b1eb48c4e25b4fa797b22eb616aec413a85aa105be91fe. 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/GX53U2577694.