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 0xc9ebaf8a6ef892efddd47c5b20eef1cf2df272fb3b0100739022b84e4dd709ef. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/377b402b-959f-41b5-880d-61c8105948d2.json and https://artists.proofprofile.net/proofs/artist/377b402b-959f-41b5-880d-61c8105948d2.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 0xdedb7e1819f7bc3f609b4a647b0f00288010c07f3d0a678dce8aca552692c752. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:25:21Z), 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/QZHN82506710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f791b09dd17c2b62d14747ce41c3203330607c46047dc8aacf0ecb1c0bc235d. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZHN82585998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8234bb8d179899563493dfad8ddba5288da4bb9d6bc5446c7956e5f200351709. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:02:57Z), 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/QZHN92587520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a33b6799bc02b28ad361ba732cd622a2ca5d346f3a15ef3ff45f12105c7e08. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZHNA2513382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e3b9198c044b1ad7a68385e5e107390857d7ddff9704a08c01739aadf4da4e. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZK6Q2518223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a8acdca695880865e7c9c7315a9e9253fece0dcf79fea7a801c1ac13002119. 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/QZK6P2531026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74324b107987053bbe41f2c934f243e316946860badf2e553edd4dce47cd288c. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZK6P2528981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a3dbe327747aaa861a22149af5793d4ddab5fe10a7948e33cbc79a9ab8ce62. 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/QZK6P2531023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2aa9060f1c6768383bcbbf42a341ac516cccd29cec9b04409132abf2bb73a6. 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/QZK6L2511639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd419d3c9ae0482fb1c974fcb12febb2fc2d141e0e95561f9c0a245e33f00f2. 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/QZK6L2509084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f56303933d0677d3fe7eb53365ecf4e338cf0721f0dd8ad4ec081b91ceadd46. 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/QZK6L2511633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c113a1337793cf2fdea6c549f1196cfd865212b61d0a2335f376309515d0f44. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6F2558664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd0516f2bc97d4af22b3709ab1c3c4131e9520b1e7e562d657e52ac076ea43c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:28:39Z), 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/QZMEM2500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aab36c2d07023a33ca2ffd7ee1fdd06e898ebf4faff4d347188461a9cfbe583. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:03Z), 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/QZMEM2500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30c0065de37794038b8c2abfdba097fc550e5a284ebe524e842b0d195a3aa13. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:00:35Z), 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/QZNWT2581451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4971b3595ac9cba9752da9c6d9b6bfb378fb56c180fa859513baaf17965be9d4. 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/QZNWW2577247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c293f9403136c1a016b42b1e8539358516b066290d706301cacd1ec6a7429ff. 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/QZNWW2578924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cb3fdec083259ba327cd3e56190926ffef602d5c3dfbdb79eef5da6c2e20d0. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:27:05Z), 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/QZNWZ2535254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb94446bda0f0593e0584881b5c7a325f8089edfe802930454065489fc7652c5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZNWZ2536848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3a001df96b57b61f4a414fd3f8415d5257daf9028351cea0c16529343a53dc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTAT2507455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e7ae5b84d11e2934077b5deb778d154d7ad88179b455a5d5005cedc1ad9b0b. 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/QZTAX2586794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89394da72c3cdec98f40b9b7f4b27b6e3b1122adde95c3ad5a06580ad2007d4. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZTAX2586795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a52636085316239b888b4c5fac5a204526ec33b1826c191c26513f0b975f2a. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZTAX2586796.