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 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 0xf6dedc96d68e055eced29e83595bbe22db8cb6d543abe4f1dcdaf056f580590a. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a177ede-91e0-439e-afca-9055d7b09b32.json and https://artists.proofprofile.net/proofs/artist/8a177ede-91e0-439e-afca-9055d7b09b32.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 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 0x431623f53fa4c7d8fb1395a29a93454b424a2409c99872b90c1d39c953fd8e94. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QMGR32071016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629d0c38b51bb42bb0bb3c94e1c33ca6ca17c3570aa276c0ecade0bae21285c1. 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/TCAEH1917931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21be8c3dc13e604163631881b3989d5793907ac58321ca75fa8efc8407b08db2. 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/USUYG1247169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6eb780d40c69d059bae415665298d73627015e70b2b47fab9be4c9734cc51c2. 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/USUYG1242533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13032c7a02cccc4cd05c9a609dc50fec9f65261bf1dd0ab81d8336dafee214b. 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/USUYG1232023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33629cae17a6e58210ca793b9285b33de5657186eb761eb5994011b2db4849a2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USUYG1202853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b021673e916785678f8de7a731dc8cd77edd11052f09611cf1d5ec20ec9119. 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/USUYG1431181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4a8eb25991dfe362a185581a199209cfbbb0ef7642a6ae5c59fe19d30b772d. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/USUYG1431182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0112be0fd101e1ed096b34335187a05785de5a9bf9dd98b7af3ad72c0b2ba32. 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/USUYG1431183.
Not Afraid To Die (feat. Haiti Babii & Kamaiyah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96333b41956f46e6a23e6ef85b70fb3a7bfc1e7b8096d3ceb4158ec1469150f2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USUYG1431184.
Ignorant Shit (feat. Peezy & 3rd World Momo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f9addf74b849d3e579da00259cfd8709d9cde3e45acc30cefd05833dc95c51. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USUYG1431185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7765ca7ad9cae5b61c44615c926a874f814221e3f1987b84d98b9a38269c32aa. 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/USUYG1431186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9b9802791514b097539e3591968e4ed4aa0ecdfc339f319b2fec3cddae53bb. 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/USUYG1425572.
Who Is This (feat. RunItUp Jaybo, Joseph Kay & J Stew)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f9c682d089456e160708b22efda75c738060e5a19e8c978186e8ea04b3305c. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USUYG1431188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ae5aae7889772ccb770283f30d4da03689373b9dbdd51f93f52fb960e7c86d. 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/USUYG1431189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a74680346c8d3b13604642b89f97212cce6b4b2b50057474777be070dbddc2. 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/USUYG1431191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea68be24b1f54a575440bfe4efdbbeaf62201bc5175ac28241af1e7460e816a1. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USUYG1431192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240cf8d2db655c66904fb99e5ee401eaff7ce6d3b62edb9df8b514bd70bb13ac. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USUYG1431193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8130bd3df07cdb6c3c0bd9ec9323b7ad077c4f89ee8e4019ec9576ce9e37e1a0. 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/USUYG1431194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b021673e916785678f8de7a731dc8cd77edd11052f09611cf1d5ec20ec9119. 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/USUYG1431181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4a8eb25991dfe362a185581a199209cfbbb0ef7642a6ae5c59fe19d30b772d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USUYG1431182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0112be0fd101e1ed096b34335187a05785de5a9bf9dd98b7af3ad72c0b2ba32. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USUYG1431183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96333b41956f46e6a23e6ef85b70fb3a7bfc1e7b8096d3ceb4158ec1469150f2. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USUYG1431184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f9addf74b849d3e579da00259cfd8709d9cde3e45acc30cefd05833dc95c51. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USUYG1431185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7765ca7ad9cae5b61c44615c926a874f814221e3f1987b84d98b9a38269c32aa. 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/USUYG1431186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f9c682d089456e160708b22efda75c738060e5a19e8c978186e8ea04b3305c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USUYG1431188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bad5a557a7e4833db9a420db8c2446c09e1e019702c3a1a8216227b75edb3d. 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/USUYG1444502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4866c642e9dbf2a0494cfb307086dcadd6847626a268e0fd679f30f0e5f27a6b. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USUYG1444503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f42a7cdab16fa02836cf2827e435117ac024cbe5506d9669c143900c39221a. 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/USUYG1444504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f49d2aa33af7aa660a285045044afe0eccf7146522aba23fb7d01f9987cc62. 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/USUYG1444505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706d5dc09aea88c948c306858b3d914dd21447fefcffb106f57c97445a794f3b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QM6P42011668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9fcadf4319d951fd4128c33127fdab85960786c59caedcbde4b6283967ccaf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QM6P42011670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359386a6ac9ca8ee42f798e526ce1bb3cf23d1b107654db54284e3e989b9c04d. 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/QM6P42011671.