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 0xe74c13596978769e831862ecda9d517157e52ffa830fb5da799eaa3526cbda28. 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/6cb57078-a1fe-4fab-9f8e-b886f30ad496.json and https://artists.proofprofile.net/proofs/artist/6cb57078-a1fe-4fab-9f8e-b886f30ad496.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 0xc2adbd5df51a95573d24ae749fa86b24d31ae3b5b6e5c08b92e0ed8ef1b6406c. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GXF9Q2476550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c56bd47831050b5cbdfddf75dbaf61162f53fc52260491a3284bf6fc66b17d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:18:17Z), 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/GXF9Q2476551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae5ca4e0c806a1ba67a6760aa70a806a5814b2d67009e0547a40020a2de374a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GXF9Q2476552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3fb7c423aec9e94ddf7c38ab07454b2e712c43a96e24e1d14fd74527801ea4. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:27:08Z), 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/GXF9Q2476553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07e6a1579baa6a09b90b7e94b2c0a5f45128e14f36cfd05b988a7efbcb36653. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:09:32Z), 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/GXF9Q2476554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d100a595b9c4ec4310f6862e39523c00363f3bb11c442a59c79c16ebeb464ba. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:32:05Z), 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/GXF9Q2476555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb6d3573a4334fadd56228375f0d5a56086f81a78ac2e135b238f7a8e2a49dc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GXF9Q2476557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82624fba101c04365e554fded42bd814d636c271bbb3400b762a354e5a0dbaa. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GXF9Q2476558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264668c4e9a3d43efead047dfa19cf0400d06ac14fa0a7ca74e6866cfb54338d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:52:14Z), 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/GXF9Q2476559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cbc9f2a9fc55664480aa0a68ddff02915aabdc4fb093e6279ce29d6ee9bd7f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GXF9Q2536270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca03e50c9d407b7645ff7dfb1aec379e583ba30da4c68698f02b58e1e3737b8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GXF9Q2536271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e7806e27d5712fe74ecc4aeaf84ba01c4b0434d306ea4a64cdcb6573916887. 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/GXF9Q2536272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aea27de848a3151429fcbba6d11581fc5947ddaa404fbca7730c5b2c572c18. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GXF9Q2536273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae471353fe0ba63b13b8f924e8a4166bc965aea98b7c93ba2d892087d92c2b0b. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/GXF9Q2536274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2522d016e21a97775489e68cc1b0aa9c2029d57395d6d085da54742c7395a5e. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/GXF9Q2536275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63345134e6f1b8430ebb95c437b4307cbabb7b6202a2b104569323fbdbc4d241. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GXF9Q2536277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c4717e9a2ee1a5874247a1a84aab658eee5424b672e2d49f7887a668fe7d2a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXF9Q2536278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a2dd7bc9e3f02f02f10f50ca8d60050f88837d35960dbbc8005be67caed490. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/GXF9Q2536279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee891fde426c1287291e3613aebfac695d0d18e3d13ace3b19aa94ee63fd83c3. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/UKXN22521683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd0a4c0814ac3760dd6fc80e2000e53db760c610c00227c2f68aed6ecf32390. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/UKXN22521684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5a5856f54c99ea7a9399e0dbbf77150e177e544bec0643795c3a20640f2a5c. 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/UKXN22521685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da17f3e3c16ce4384cba0f6b41bb88276a9eb1282cb51aa2081c7c03ed3dfba. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKXN22521686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252ba56557fc983cb52bd01b782a4440e9b642d2d9b6674fb79ef7ac33426d9f. 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/UKXN22521687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8fd32eb5dd5105084a0f2b068d1beebb4971b18c2382562ac1cfb334c08d7e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UKXN22521688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43342a3292b15823ffef4aac6b0a4525b07ab61416f068dd2e312a2885f0b8fb. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/UKXN22521690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9beaf676a0f3b31f4b1449f0a07cfef0d47a7f5b01832370f02f328e595cebfd. 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/UKXN22521691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cdc3cb7a5e11618f1d66a32d18a8dbb3cda78291d6c3c857dfa6b7e57d266f. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:08:54Z), 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/UKXN22521692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5104657d50e718fc22549bc9b78c87140953987c89278b524c1cf6cf71a7fe1. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/UKXN22521693.