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 0xcf1317925d3e888f4d6d9aeac5d0516a033a2a156d88ce67cac83dbcd28b255d. 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/1aff3ba5-ba0b-4535-a69a-2c5605fd79af.json and https://artists.proofprofile.net/proofs/artist/1aff3ba5-ba0b-4535-a69a-2c5605fd79af.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 0xba156e2afda4f5b3442ad0d2b9f8e9862ebbdc22cfd80209f4d5238138d9414c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ5FN2066359.
The Key (Ben Chaverin's Acoustic Version)
The Key (Sam Day & Dust of Apollon Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b6ae13f6c4b9ae84597204ac8093dcb4a32b21f3386893cf5c099a62b642c6. 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/QZ5FN2167802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec5306f0ad875af69a24c59d2a128c45d92f9ed44961f5a6eaf6bbfa9cbb7e0. 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/QZTRX2338479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddec911adea4e26eff88a9c953d0a7d300a53571afb2d00c68cd145bb0a9667. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZTRX2338505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799f664adbd38a11d66676660d6429b349835e2eb56c4f4be0253f6f56d7410c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZTRX2338523.
Progressive House 202 "FFMM" (SlYder Remix)
Progressive House 202 "FFMM" - SlYder Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266dbaf03140182a75350359e0c8f1436d8b719ece9eaa1454650f19c1e56eca. 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/QZWV32469227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5ffaf98b7ec99a78dcbe0b31105a9b1bee162ad911dd5d8debafcd2a216e34. 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/GBLV62109875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9077ad078f58e953f7ab8b8c5c7b0261c1254a203499c3f70c8b68b0f877c17c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBKQU2250790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d34d5626e3410364fd734add8e6e2789ad9376b0b132a82f598db1ca8d92fb. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QMBZ92374367.