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 0x9ded25a24cb7aa25bf85287a1054846731471433733fac59a27545c33600e8b8. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3efeb0de-5b68-49dd-9e63-203d8aa8da73.json and https://artists.proofprofile.net/proofs/artist/3efeb0de-5b68-49dd-9e63-203d8aa8da73.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 0x9b62ac4e2b230578b5490ab0c95ab75663048b991ecfe8cf59b1da1a586bf382. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEQN41600187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412cbc60f9d0c3437d9d286c18b1bbe091ada354867ad2ca6bd874c7ddce5c1e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEQN41600188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9392c317a91e11616936d7f802eb94c110c48518dfbf666dabbcdd00d13a05. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEQN41600189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a5fd2352d6065b4241f8f14652785a6d07108ba0e9eb29aa28f601e48bed5e. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEQN41600185.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3d2f97d6e1c906ff0c98d9845c3efd966b729277dd49961b047ba1b885b694. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEQN41600186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d6b4f10fcff2a062de64f53ed2dd876c7f56b2766afe7166702515958083b2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKYA0703756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32159a7e6b9d7588712fa3da66813c529097846cfa3e8e9e0f5b83ae87b7a2b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKYA0703757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d04240527017d69a849d50ebf013343192be4ecddecb0368a61087a624c9cd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKYA0703758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d60b83aaf66612bd216660086ac0827a2ca9dcf436b14f19dd86eac465693e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKYA0703759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccd13021de6ef2aa0275219f86cadc44256ee3e73f3004c3ca7aa7f3c8aa73a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKYA0703760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4888c19c343812257ceb0cd54dbc4ca9dc759c115041173ca232c39cfffaf2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKYA0703762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a288b250dd92b38172283345252c38c2521ab55e20cd8c8caa3a686bb9a5001. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKYA0703763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf9d6842b8be4373e75755324c8c0efed0460833417d5853e5707d5f4ee98c1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKYA0703765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0c3c7bf4b6d9ecc3bf6b76f20614c14e765c13df1165eb9cc9bd2b62bf2a64. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKYA0703766.
Cold Bitch - BBC Friday Rock Show Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1366ed140a8852c21f098c74f170e3811833ce18fa7db654c3320166f5b24e1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKYA0703768.
Far Side Of Destiny - BBC Friday Rock Show Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaedc6212cbd344fa352d98fec02e380415f6356939df4c3f347a5a9f544090. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKYA0703770.
Blind Men & Fools - BBC Friday Rock Show Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6823fb5703c10c3bedbced44987b964511830e899b7708bbe60897d0c27778f2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKYA0703771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe39b1a59388625a7fe47221b6e9dd911d9fb0fc63e1b6be79f68c3dbb71ba1c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBKYA0703761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07eaafb84a4ba0e7bb1e21ba2f2e1bed8362ca26a8261ae06b44784112dbfb78. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBKYA0703764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdf310e8706c7e3e4daefcc78672c7a7b7e0a839830e55ee949cb6b73332378. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/GBKYA0703767.
The Watcher - BBC Friday Rock Show Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08d5eeaaa19c40453d99a7176d35ad2a14eac369e4ef900e1fee7147ede3a8f. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBKYA0703769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134d5c28984a1e48e0445f033dad75fc350e0f9b4fc549608d5b6ec8bbb75f97. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZDA72185786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c7715738d57c1ac7deb1cc12fc097203cf4a178f57d511aac0446f145d148c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHNB2277896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2675ad5b979d7ce737a00dc65b67656f5fc64e30ee9383d8413896c4787db2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHNB2277898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880722add180d964d9cf8a3c94491338bd160b63904bc2ad1bf1c1c5c2af7ad0. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZHNB2277899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2563b5e8acba4f75a5d274eced6fda684b06582e252122edfa945326ac317a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ62116735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fdb6909f26e57bcf67f6ef55b507a5ff2ab3be3724f240c23f70eb844a28ef. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZHNB2277900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb16f320d8916f82f1246d6e8bd7c37881d3155da72b8ed95ba8511fc80b7ec5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHNB2277901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944d0c4f4575548a2084cc6f7ef99e287d742da9cef5d70de2d4204c53a4faa1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHNB2277902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa215041979fc56d05cfb44a0a56eab5153ebf8d9203b3b0ecd9748ac95efe4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHNB2277903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb69798e796bcf16230c87825de06a8c81c62bd9a0e1a2cde59544099567495. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHNB2277904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7012aa14a1f98471646a49f0a030ae719b326314bb769dbb0c4e77aac2d6fe88. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHNB2277905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3420501c8714c08ee094221f4d4af020ae6e0176e79245cdcf31977bab4204. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHNB2277906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb8f05b849cfd6edda94f29a54b7da3f81661cca6f2f5a691ab110643713cf3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHNB2277907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc435b454d844e12bae0cf1bf1ff6e8720d528585e66fbd60a1b227d5ff23354. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHNB2277909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5157628a4bf1d1c8666c19e38eb4ea0f48fe20d3faa8125d4368db9d692949cd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPLR2305549.