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 0x516961f0582674f6987a72f405a414c63a5cecc30f0372c8bc55442db971e02a. 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/8c62d574-6c3f-4bbc-a8aa-105efad7a559.json and https://artists.proofprofile.net/proofs/artist/8c62d574-6c3f-4bbc-a8aa-105efad7a559.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 0x79fbb21f6ba60852a666e62cf8dfaf9c41096d9c1de60ef801df6aef6dc8a860. 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/TCAEI1900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b1cc3a6e21fca87e085bf08aca1397a3a25a70a86652b3bec5ed2b1ceef844. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/TCAEI1900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b17ee3e242fe0106c58ebe1a978a020ea1454c20fc27e3e3dea59b5ef507f3. 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/TCAEI1900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c994cabdb5777da2971632fc522cbb590a1dd0b5a5a57dfe8b3764372bffbc. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/TCAEI1900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa243869fcc148fc3382bf12468004c798b01047f18b262ad2b455f3a9de608f. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/TCAEI1900213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e71f72b831edf225526f8599693a6621386775b616e49c2de698fee455e36c. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCAEI1900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff47164fbc79b53a0ce45ad53667f4538c5e12ba857869ef810fc0bab0bcd60. 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/TCAEI1900216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09401f17e98c4110e6baffbcd3739c6f91c959bee8814da0b6980035f4e7e33. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/TCAEI1900099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241912806c38e08ec1ad050538acb25caa025c908f072b297f37cb2ab1c3df0c. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:32:51Z), 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/TCAEI1900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccfd1a92cd59e8850d39121cb172ab37cc5934aed4322fe2c589ac32047c6f0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAEI1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79aa76c3bcf678b35175652384f3e7a093634ee42f4837dc28b2bf438ee51e85. 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/TCAEI1900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157f577ab732ca381ef7670753371df97efe8b579f40ab8ae8055fd0d381010e. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:26Z), 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/TCAEI1900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f89d608d9f384a5613f56cd1689f570c571956d107257f41d95530ab9f6510. 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/TCAEI1900113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b22889ee74f84f81099944870a65360fc727f1fd1ae4a4d5b874b7276c2cb0. 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/TCAEI1900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6697e294c97b02ba9280279b4d18aea772907d0a18671e9a4d22668cb270179b. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/TCAEH1999993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba3f956e26d5905cc01917c1c1f389df1128fcd6b99be21e7d71e6d5d44751a. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/TCAEH1999994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9561c643474f29788d701b205aa7314d4adc4825ffb7be67f3699c3994f77a5a. 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/TCAEH1999996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88aeba8a67072d1a06431a05b668ac82bfbf24125f05dd53ecc95f52e4b90ef1. 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/TCAEH1999997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183421ddc10bd6658ac9a0879a32fe31fa4fafeb421fcdd9d1f19f838ad6bb5f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAEH1999999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cee6500fb380d00ce00304755dd6455e1c8133b579cd7e208ee444bfc13c44. 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/TCAEI1900000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf02ad09a248b500f63a48666cf8d7400da3b7ab3d10c730f46ffff32083e58a. 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/TCAEI1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffe31eee131f21e2c9b7790fb272735fe5c615be2c4394eac02db7348b5a013. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:24:59Z), 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/TCAEI1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b6c8c7db0940e7534402b3c990ee9dc57d64808b178add9206eb21b41ea250. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:25:21Z), 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/TCAEI1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4c67107922465d88cc9cf5f5a31e7d7005c4aa0b15247db68aa3f5e911e490. 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/TCAEH1999943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315d77ff1eb4243d9e4d03b9aaa0c2b3e2ac6cb26a303611ddb06256cc48c28e. 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/TCABI1259703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe777897f606bf5f371c75a371768c0196c50781c4e0640b26558b385404a6717. 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/GXC5E2451573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac329e6256458e6fa44cf337fd63357190a738542528d5d09e5b1d13fd703a8. 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/GXC5E2451574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db8dabe0d4fce854fbd5960d51d49707612e5ad4342480d564cc59b27c2ced7. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GXC5E2451575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4b4635b66e7da652a62f98862b65cc0f564e026f4bf49327836fc972a8c5aa. 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/GXC5E2451576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0358ff1ad1c7e66d8456bc2fcfb3da93149945ae4f73a02a0e2b4ffee49a37fd. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:05Z), 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/GXC5E2451577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4046277f12286292924896c15585dac19089aed52001fe044825d8134b0f9834. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GXC5E2451578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dbf06b8d59d1910d5198718febc6ba7ee9ecdbcadb3d8360407511e1d297dd. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:22:06Z), 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/GXC5E2451579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f14d63c797c6c36c6569544fa17a2a2cbd910ebc6220ceaef00f445ecc5f85. 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/GXC5E2451580.