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 0x21afeac9bef1d825e525c9aaf3245487b7124b87744ef495cf873c991b5b8698. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f18fcb7-de31-488d-9148-b4930f27a226.json and https://artists.proofprofile.net/proofs/artist/7f18fcb7-de31-488d-9148-b4930f27a226.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 0x6d2d10c95408dc958d30a2687753e7e9562c903e7c2c52814861b83d18de0e35. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DERH82217902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a6c95c7afcfd69d9ee630894771729c682ef224853d7ad538bee2a843433ec. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DERH82218801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fa325462b1531943d8236e29d430dd0ff530c720d17b7f144ab448e74f4028. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DERH82226901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8c2451d7a7e178ef28f707efa329a3a312cd9b99c4016a413e62a4d59afac1. 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/DERH82226902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4718768fa2e850291a6f73a3140e28ce5ed9658e4578b0f9c6baee2f4ea14cf2. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:04:16Z), 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/DERH82226911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0354d114ed58650864e9dba2ec6a6e750e34b24d2e2fccf47a8487da6ecaa421. 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/DERH82452201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b4fc131894e36359294431064104171fcb359aa053b1860e81295835a49ada. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:35:55Z), 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/DERH82452301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc4fde0cd67902990ae350ef872dcbd22cf3d4713dd575d65b9c02f335d0dff. 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/DERH82454601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5b12397ce1fc9da70ac3015ea51c8d7f9529fa408a6bbd40b43b888f3d1aa2. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:50:04Z), 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/DERH82459302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e29334ec88474e5e1fc03316384332f76f1f95de7da9b36c5d144c8e0333b03. 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/DERH82459303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fde891be0615e220a646b241090244314d9f461c0d94f4335f9a7b880ce139. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DERH82459305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9dc24a0175b4f48f8a67d411bdc4759c4a17a220d7ae1675be76e33b3d36c3. 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/DERH82459308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa5fb608fda76f7dee38791e525e243a29a4e48af373de93f196917633f9462. 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/DERH82461001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77eb762b6127e9af84f757790e6e81cc1aeb9106872a708fbb270d7c8ce02f5. 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/DERH82462101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104bc4ea6a79d687f5b2c72c178be14fe0e4a2e6a8df6dbfcbeb8c6ad9cf3caa. 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/DERH82464703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325f80a876aaacebc63d9d3934590bce6ff2ee2ed4a8a91c07e154f73b2ddc38. 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/DERH82464704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5226948ef926ae0ad7115dbf43a69613582c43572f507e39b68aeac4e88ab86. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:12:33Z), 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/DERH82464705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4362f55f841fa06d7f79ba3692e3d32002b3d7f61af16e79465faa247325e314. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:49:45Z), 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/DERH82464706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d741ce5db004b0107bcb59d2eb4e08dce4da1bf06e4273277c1c0960aceb04a. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DERH82464707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17f8ebc4c92e9d9c87220d207aa048f518ce5083638934d18fd7044a1ba80dd. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/DERH82464708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda515d976c8cd2feb86a0a196bb246ae6ba3e6a36007ec86e913f1e5a2123aaa. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:10:18Z), 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/DERH82464709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd13c0f01b45004090f0e17b3e939278b5a8b753a4120769b23f4fd6bc47814. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/DERH82464710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806f3cb166be58ca1ed8f1ba2b075ae0f3487dd03fe69028e181bae3592fea93. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DERH82469502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6906df93e8fc85aacb356707f267cc685ff1f1db2cf6b0838a9910dd9eab4c. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/DERH82469503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc201d13f30477a448e3b35c11127a5e3e4ff8025abb14be2a8f12caede088082. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DERH82469505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f24d2f345ca3f08f020d38e9a6c2c89907e893b675d499dd4fc4617417a6d59. 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/DERH82469506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bca46abaa1c901d0aa2dcab152e959d63bedd17cb865454b207376dba8bde9. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/DERH82469507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf611291d0e98fefb3570dadf5cdc6ff8cb2c77584b0450b6142f4f0713dacb3d. 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/DERH82469508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2061eb199a8d5ee83c0d90d6b16cc1489c79e02dafd4c69ef5d3349faf008bb3. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:07:00Z), 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/DERH82469509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff22cb2179bdb59f56ed4d4986ad8fdb7d6ac15af37c82dc56010acce00d9c6. 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/DERH82469510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99dbc41f6afe570555eb7d257186fdcdea237b1bff4cfb9ac63013cce4ff2f69. 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/DERH82469601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5402e0c7960f5034cecc3256378781c61583d0f822db6ce4d91f2ee240cc88c3. 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/DERH82575001.