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 0xa180f4b4b7a1c90e1d92136b14e81fda3027d439054d5b6cc4d8a9b884b56dfd. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f746c5e2-c00f-469d-a4c9-d15049e91f72.json and https://artists.proofprofile.net/proofs/artist/f746c5e2-c00f-469d-a4c9-d15049e91f72.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 0xa0be5354d721ff17fa6a26671f392ea9ed4d4e70bc9899bf8d1a9284ba334227. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAFC2027318.
Bonanno (feat. Benny the Butcher, Rick Hyde & Heem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b112294c14d43e37d34f249de23d9e5c3e0d0b59150a62a25d33cf73e22949e. 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/TCAFP2155232.
John Gotti (feat. Heem & Benny the Butcher) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1243b4307d88347c5960fc1c97d967fb00492b2efffdc8f4642902b17fbb6797. 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/TCAFQ2196676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968c5962236443a5233ec5a1fcb16cd523911e8895c7b127d402d52d2dc4fcd1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM4TW2419358.
ESCOBAR (feat. Heem & Benny The Butcher)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4bac80765086ee6f8c37b18a2b41c9ed97dfd5f6ba110e03bb01cef6f2bf3e. 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/QM4TW2419359.
HONOR (feat. Smoke Bulga, Lucky Seven & Lo Profile)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74bdc79f63a6573fc0d1b142d588dfe063b079344ac728ac553919ffddda92c. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QM4TW2419360.
SLEEPLESS (feat. Eto, GoToMar$ & B.A.R.S. Murre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c009ffeb4c93331a205b202ec239f742bdb28e726606c3bb8602d7961549ab6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QM4TW2419361.
BODY (feat. Jeru The Damaja, Planet Asia & Lucky Seven)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee691ccafcefcd32fb0600efc51d0cbe78c6f70dccf1c929ce7e9e58d66a628. 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/QM4TW2419362.
WORK (feat. Rick Hyde, Chase Fetti & Benny The Butcher)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3af80bb402dc54470ce9f145e50c17a63db9dab8e2b53453c70a98990e13e94. 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/QM4TW2419363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f5736263040b12b4599fff800a2f67e058939f4d9e82d0e944fa41eeff3aab. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QM4TW2419364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9008d7ac52c6b0c38f02af46250f7f2b5628dbd427f77d63ee5243b5ef2cf879. 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/QM4TW2419365.
GANDOLFINI (feat. OT The Real & Rick Hyde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0588e7c744c7d2b474a2c33105758d19c68165d99e41b5729a0718f345f46b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QM4TW2419366.
QUICK (feat. Rick Hyde & Flames Dot Malik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f91179ba2040fc851568223cf5f8c69349e16c2a3bdcc6645a7dfba9fa2d85. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QM4TW2419367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe68172d604e63776995fd3bf21ffcc4f060c6288403b6541d86e0225e538fd. 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/QM4TW2419368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9242cb99cf294065453ecd4ffd3ee8cbee4876c92f1919cb1e49f9e58a1a3a31. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/QM4TW2419369.