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 0xe54abdf08cb8a052e2081d3d48ad26b802330ee75d16d77f7dbaf0bc1ba91dc8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd6da039-3152-43f6-83df-044adbf33493.json and https://artists.proofprofile.net/proofs/artist/dd6da039-3152-43f6-83df-044adbf33493.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 0x522668c6650fe069556fdc4350f2fd07703564290aa2ccc8b929cc1744adc77a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFYZ2178104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0eda0ca1b16de720026eecd2b28aef860df18e8e9a15f265c9af422801d15d. 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/QZFYZ2178105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f1bf55d77d9c662eff0736f0e5b4ba51037126cdea190803307b0e96ab7deb. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZFYZ2178106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca227fe989c53e6dca73f28b511f26fb35b8dd9a685e606a53631193e154579. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFYZ2178107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993d4bfb2a6ff755ec20ac0afb49890e3d0d0e178958a50cffe7b5f3d9c49f1a. 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/QZFYZ2178108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6715e0eac32c30c310b72ed5403ff57af6b9dfcba5773f1ebcecb7cfda528f30. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFYZ2178109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6f395b37724daec50e52183eb42a42d7dcb3ef7846da80cb8a53e4954fe12e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZFYZ2178110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa582a83fbeb98017311bd47d6a218e0640342740b0b5726ef8f2d2d860d547fc. 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/QZFYZ2178111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3c26223c20aaff1ca236c88b6571d05cc567b64e5fc9f78cdd9aa9385df94f. 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/QZFYZ2178112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb9b761d02e74f1c5ac9b293db939cad6af103a232e2fb9e15d7a89cb8ce609. 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/QZFYZ2178113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8931c9e9baf7c69c791c8ad584cadf656c7f3fd468b32a4673f46e2e30573455. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZFYZ2178114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6441c5cf907d94c5cdf092eb954ecc9bc31a5d6ccb10aa336f964f3831fa3882. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZFYZ2178115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ae1f5a24a6e8793180df5c834ef1f647237850476ad736921daecbdfa11832. 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/QZTB62211750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9792a99f5a15f192e064400e4f5887ccb79734549f6b539624b795ff3d3cabc8. 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/QZTB62211751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228555ba413266dfbf1cbb8e4203564fb5c4a3ab3e846d6df255034eed202399. 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/QZTB62211752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30c20d0ddf583147094f96dd7d4f06f88d2be0c61c4229cfb8d980e65d12e52. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZTB62211753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7f0bbe34cdc1897762049dc622880afd637515e3ce6148b439b8f095366c41. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:51:19Z), 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/QZTB62211754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f519e163be07c52a890b7b85cd38f664686435107917c195408242c3c5132f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZTB62211755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbb96b4934c9db6aa77ca4bcec8a50e63fbc5a557f5ac6e2cbcdeb5b4441142. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB62211756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd76fc6f6022581f4f583e82ccb706fa1424e435779b528242d02443ca80f92. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB62211757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bc54b78a671e9e4cecf1b51ab039509941327016894a93790713e879ed8c9c. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZTB62211758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd06ddfc3b153cabe7b068a766e7528e2b0da5b9475c5e2a8d2bf3ade64fcf86. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:48:02Z), 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/QZTB62211759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb70a1e0700d0c859d0cdd469970847cf4d576fa41ac0bd6223a1ec04d6b3c0c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB62211760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab30b714021dfa5292ee682af364d48e681ff9760705b6304be3e27ea48e0acf. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:03:22Z), 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/QZTB62211763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c6db4a0cf2d5f8875b93484acc3fe0a0c2e7e99d55aba408caafa9874d06d3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:39:14Z), 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/QZTB62211764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6c9698522bfb55ccf2bfcc2a40f206bfd9d6ab784493d7a8de44ff2c9935ca. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTB62211765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe54c58fac5debb0ecc7a97f89a4fa83205e6d2d438cfd218475d9d2bbe91345. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:52:59Z), 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/QZTB62211766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb05d4193248cb5acd55916b712a3a7fe4947b106395565aeb59b2446db680a2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:44:33Z), 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/QZTB62211767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1fa4b07c86aa541e700cc79894e293b82ebf3f50d93460218a06eb78ee6481. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZTB62211774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8701631b754a3cc1529aa5104bdd1aa2b6e034447d2d4e9d3b61b01014c2f17. 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/QZTB62211775.