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 0xd08da329591b28dcd3c8cce5789c7d4df34c5d67f32b4177a7f8293e45139ab0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5f1beb0-25ed-4e41-8c4e-d5462ae6f402.json and https://artists.proofprofile.net/proofs/artist/b5f1beb0-25ed-4e41-8c4e-d5462ae6f402.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 0xeeb336aff2a33e1361e29b5d2bc8fb8be95b05ba87aad6e60de90d7947108161. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCADF1714504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcb1d41f67b78c9ec3efb947ad216d99d57dca3c5395ed3d0c749876fea2cd1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHN32505896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f71601e833884993c948f67dae36cf8ac8ef189c2a2671b72a35b2ec677c82. 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/TCACS1656588.
They Won't Believe You (feat. Rico Nasty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70d03226a6ee25e4a6538030322963a76567366095653796e44a41dd0d74156. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CA5KR1971386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f818cb7cba2a695fdfbbfdab4968733e139069118ef5a32ca18526608754563. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/CA5KR1975978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbe1024a6be2dc79f71531362f3474bea2e420b8e0e9a0bf7e4f700168d23f1. 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/CA5KR1980890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302975b5264927ada58c443f9cf474bf3bc469c6e514a8b32d96162cff595d36. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/CA5KR2105788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c0f75e3beffceb88aac57c7c8299a0e35569ab81994fdde7300af808b57ca1. 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/QMEZE2186707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa7c2d1776b650358fbf7f800a4b90489203e4e88e0ef53e897f07b16aa2bcc. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GBLFP2238243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b440e5a784017c66a51757e7f4cb310524ddae9e3400d69b6cf8eb85c104b3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/GBLFP2275517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4aaea2555495a28e3afb65ffaa50214fd64e82c17aacbd1817fa9a82196638f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZNMV2383063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2733018820e742a5c3a773798121dae913616dcb0ede43b4d39da5d6d4ea6af6. 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/QZNMT2487616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f59edb5798915018419e68b957706d09877ffc3d0d5842985b765ccfda9eb55. 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/QZL382580255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd457410d0746383b14d64617926af933ddc10b60e16fa1f1c2300ae48fc85957. 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/QZL382580257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db78d869984f214ff6e25165694176d60c94c84011066d467cec2b030c7b343. 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/QZL382580258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329709c4887970c09e74575798e133ddf903aa84dfc4722fcb4163ce313aa7b6. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZL382580259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6594332ca0c7fda86903f09adbc5d2f5b02a5408ce090a75c7b9aa0992c83dff. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QZK6M2340203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10508785d18633684bd752d65314902b11a703f0a467263bdd24a2b3a905569. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/QZK6M2340214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2acb132a2b494c02d208b377b015af912123c270a5753389a13c5451ce3ffec. 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/QZK6M2340216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd397ef88c172225b21c6c5390e18865dcfd7bd437f185d49d18275206259a12a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFZ62269924.
Back Against The Ropes (feat. Big Flock)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9013a3b20a5d0238c7575f32e37cfa96a3191d9c9df6ee3d985921d6f491069b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZNMY2288138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970688b55d0177c993feb8b7e8796dca2fcfae68dcd6d516d1c0218a05756302. 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/QM38F2000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71dfa96f9478f501c6a0e8b5b57420f9cd08b357bf2b33419f3ed44e7ee50dd. 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/QZD442000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97d25f3c548b026b5683bcf87a2eab2faa0403752dbec88440baa20695e715d. 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/USUYG1162325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff441e7bba6aa962ecdcbad0adb18ed9d3d188f4952b115dade2bf3209f65c1. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZDA72572630.