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 0xf25ab329feef7d7d382631a7ef90b9ff3751fcf222fb9f929c90c6f1071f0ccd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ac5bc23-b124-4e7d-b9b1-d8c534cefa90.json and https://artists.proofprofile.net/proofs/artist/6ac5bc23-b124-4e7d-b9b1-d8c534cefa90.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 0xffaa020899059178e8dd5ae13ef02e6d69ee6985a7f94808e0d05aed0b957e33. 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/GB2LD2010329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edac489a69d295be1071a3b15bdf486fa39cf7358017b4a5f9d651235b32efc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GB2LD2110139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031c3259b2e2743a23687e41ece1bc85a8cfefbe8f16b707426cac5be9d84c91. 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/GBTMZ2101073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741c02175c13b13b9047979ce225f1e2db1cd4274d5853cf0de76c291e1a8906. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBTMZ2201110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44387ba9c8385efeda8d6ac848b8fc2e40a5de557d1ce622f0d858eff17289f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBTMZ2301153.
Lion's Cage feat. NEVVE (Solomon France Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000b162c7a6335ea9aac2ddb1dd88719e992b5e7b22b4c804e31dbd5baf19cf0. 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/GBTMZ2401225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3b984dc9f21019811a0ecb1a3741df0b70f09bfc6b06c588393baa41e8878a. 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/GBTMZ2401237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296a02b48ef66af960fb4ff75a9486576094a439c720a7bba8dd66cda00a4331. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CA6D22400236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2eef68b1424b1ca9e883037db79b609e2a106668a69e2bbb5f8643051b599c6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA6D22400237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab0eaa31dff3ed846afe0774321ac4115c2929bf1a5cc3e8d886d7f469f06ad. 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/GBUM92400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e40761555fd440193d585106993f87a788898b608cb1d3afefcab405630b4d. 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/NLCK42210078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84ec07eaad83e15e95d344fa1e2ed3d10cb33a42cd7a359a9f9b26d44ee011b. 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/AUMEV2446148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c2ebc2f8b03edb9212303d8b3408cf404944dca8ed31c53db2ca8207364719. 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/NLCK41094766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42911b538a341b33745d1f7442938d34debbf8d32dd0a065db34755bb7687f2. 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/GBTMZ2201126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c2ebc2f8b03edb9212303d8b3408cf404944dca8ed31c53db2ca8207364719. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLCK41094766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000b162c7a6335ea9aac2ddb1dd88719e992b5e7b22b4c804e31dbd5baf19cf0. 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/GBTMZ2401225.