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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdd1e870810449bc33263cbd84e2be2e77858f9138d9c581b4c35c148ae951f. 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/6ef58396-f083-4019-83d9-00c57c48e0e0.json and https://artists.proofprofile.net/proofs/artist/6ef58396-f083-4019-83d9-00c57c48e0e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
M4TD (Man For The Day) (feat. Rochelle Chedz & Jay Nahge)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247a714b2e31a40d54b97bbf8bf7852328a21be4f2b74d352579b781007f4e4c. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZHZ41945293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6fa2de035c663788cfe02b9a57325bc9b42f2f593d879782b9b21a88508712. 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/QZNJX2049895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f4068c591c5605ba2b9d3fee853f89d2b6ea4b69e5b012fa7f60f4609283cc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:30:27Z), 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/QZNJX2049896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d04aa15dded3924697b458d7b75f1bf7707151f0362a598f1eb4a314bc1146a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TTA6Y2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cc42ab9dcd3f2f994484d6a0e42cd3d2739fdf5614624d22a3d287448da100. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TTA6Y2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61961026d6c356aa91bf62a21857112546d194d65cb4773c0c25145891454cd0. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TTA6Y2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be5a47ee24a1e1657031e9d9831ff3a828250fe28969676dd9a1605e649976e. 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/TTA6Y2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca2d8ecd68603973f1338d57fea6c72e11b168dfd984c5475c8d7c602551a4b. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/TTA6Y2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c4f76b7599b1b63f42d4e38b3f31f9c5d8518641be23f504b8e2f8dc6f00ef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TTA6Y2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891807356dc7500afdf885e45313e8caf3a7ec8ce4a1ef60c4cd50ea94beb203. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TTA6Y2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e4c9691a2d38d62fc4e1ee9282fe6faae47c13a5ccff72e2a213393030483d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TTA6Y2300010.