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 0x8b2bfd1392b6ec8cd0b441e6403c1a116fa72bca092b6e5858b9a142de0eb630. 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/52fb6fcc-ca80-4fd3-ab18-4ce8061c3ae0.json and https://artists.proofprofile.net/proofs/artist/52fb6fcc-ca80-4fd3-ab18-4ce8061c3ae0.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 0xd0ed0d7ee125f6b091023f8d9fd3cb0158e384459a8c416be412ee42d46b236b. 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/FR26V1603981.
Vip (feat. Mister V, Samy Ceezy & Juice)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ff3e89c21ec060b822b5beb4615cb8cc1e524a251ee560387c630dce6f7112. 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/FR26V1603986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3f8cc47cf99955d6e3e37e5a02d1f279a313df5c73728c1d15260d5b58d031. 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/FRX851701091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0386d80dfa856eabb1bf4ff57408475204e59c4f13d6a586045cdf9bfe0edb9a. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FRX851701015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893ed25be027b99d678787fd23017025f0a9773bc4eb4c3c94fd0fb12707475a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX851701094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd132aa687758b11335571e9aea54f5cf69416018b4488824c69b42152b50465e. 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/FRX851701098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5a7ad7721114a8a149a1dd4f581d3cc9a09f3f45c2d7a0e3e0a36489b56e3f. 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/FRX851701099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340cf386704c2e5f24e767a2e6239bc1f0d5214cfb81e370f7eb6bee1590a3b5. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/FRX851701102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49629fb671237172d87ac75c0a5ce9decd1825276bf60cb4885a4c9339a803da. 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/FRX851901652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede2e5c62bab5056af15b646126222d6ed3dfe81a1e44e85d7a4b789181ad540. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX851801543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0909168c00e890d42e66b5529ed41fff92938d9a3ef2728a4ef09f2d909e3d1. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/FRX851901655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c059788fda1886c820fc36d7025d3e77cc5305d105566c953df6b62bc44a42. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/FRX851901663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4095bde129f45d49f241802cbf88bf6495318a4eded5b1b3cd14a87c83cbf610. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAET2040353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bfa2d2d31f762393b70702352ea525f910bdae074e879fee5aecbe64ad1757. 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/FR9KZ2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2edec4c86b668116ca042a9deae7bb8e9499c4617bdf03bb2d1ff21ceb01f33. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QM24S2003363.