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 0xf3316f19697bf6bde66b507f3d6c9ecc2265c97702f5cdad0310cc9c00854918. 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/b643d74c-ea03-436a-b1af-c43ccff3a3d5.json and https://artists.proofprofile.net/proofs/artist/b643d74c-ea03-436a-b1af-c43ccff3a3d5.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 0xfbb2ec348994f37632c165765ef75164e9e6b20f3fcc50f829bb9066630d9536. 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/ITY101113001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97da4cc65226b6dfb2a4839b4d1856014f04d46a6e034c6e25a62d1f12489f32. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ITY101113003.
The Outsiders (B-Sides from "Three Hours of Sun")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac5684d6e1e3e2d18f022a608fd83b6f8d05a2b7f0d2c2b20211357b4ca0334. 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/USHM82409941.
Drag Me in, Drag Me Under - Neroargento Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9ac3c2297a27a2d474cfb691ff6f714ed88d0a52dc90d3691a6bee362abd4e. 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/DEBZ71700094.
D4TM - NeroArgento & The Silverblack Remix
D4TM (NeroArgento & The Silverblack Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c40c80cc11b0e6d842b15914b34002a60266b109b45b981a9674b006c498110. 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/QZWDE2257278.
D4TM - NeroArgento & The Silverblack Remix - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516a6fae634c114d6552c4a1b788753dec1d0f2e0029ebfb6a883592f508dcce. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWDE2257283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a979284f4e5755831069a7c71100a296162ac2b1340a07281613b374998d7a3. 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/DEKB72076658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc633c512fcdbc7dbd3bb44ad050ce753d6cc36e8f27dc7c8399d8170538b34. 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/DEBZ72200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58644deed4a1358ede6350a9d54184319f7136a3b13e076c284b56c8bb5d4da0. 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/ITB842100620.