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 0xced68704ff04c1a250aa0085f413526c5e93bf6206cfbd0da0756f2b0e8b6c59. 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/7272c9df-32bf-4733-9dab-42a74e0c9e47.json and https://artists.proofprofile.net/proofs/artist/7272c9df-32bf-4733-9dab-42a74e0c9e47.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 0xe352b959d6b768e9ad79afdd289c7b46744f0cce49ae8ffd90f45c7276aa5c7c. 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/QZHN42019873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7a9017fdc3d3eb1fdd7edafc369f9ebc26b4390f7148b5b6f2f1521523bc7c. 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/GBNEQ2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94e71ac604a7482c3396864c5c46dfdfef30888b85adf4cdd70e74701c12125. 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/QZNWZ2300984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433fd9ec5a151d8e27b7a319fb979e99ff2ecfee9ce6e9ae1102d05fe0b7e6c1. 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/QZNWZ2300986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0790b49ab66c7e3881f822d012d285ff4600d7c40aff6bd90983debb9cf0c2ad. 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/QZNWZ2300993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9716992d62ee18a5358bc112c9c83c74e127a3cd6ebae7036b05cd76dae674e0. 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/QZNWZ2300997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfe45143dc9482f918314cd84be64de657493695c0a83ed563997ee7e6712cf. 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/QZQAY2511860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034b36018403bb1707751678b2a6775365129a627a5c3f60219553f6bd32a90f. 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/QZQAY2576041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5259e64768e38008d4bf30078da779ee740c7438b9b7e75bc1a8bc9f70692cd1. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:41:56Z), 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/QZTLA2515372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09b72013e96d144b17ffe7492b185b22e943e1c6fa95765bbe54a7264d15b83. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZQAY2545225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe699c01a04f19bf94cf1df4c077c6f243a14238ce6c6b8504b8b2af3da8d7c14. 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/QZQAY2533871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564e2a0819e310868274623a3f74f9e6d45798de9eb4e56c914b187e7f1ad133. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZQAY2586611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c669e2d48a6d2b89967bd8d7c9952d53ed4a9119abee360b7ce60b033003d34. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZQAY2506957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3523614151fd508e8515496d903a021792d7fa04cfd4b16e0d22c2ba88b3f1f8. 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/QZQAY2577186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775797aa50b7aa3388d97b3d35289776bb0d0b6d0aed868da2bddb6119b6a332. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:54:02Z), 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/QZQAY2504208.
Wild Cowboys Revenge (feat. Rahiem Supreme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc150bfcd66f889d01184e324f157244b90a5c6e4af2b2142b3de8d95f0e5b8eb. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QM6P42495224.