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 0xf9b391a89abc6ee422ed274a9f52fef7190909ee3412cf59d19fae8aca4e1e2e. 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/a969f5b4-58c1-4fc1-96f2-e9c0d3dc2845.json and https://artists.proofprofile.net/proofs/artist/a969f5b4-58c1-4fc1-96f2-e9c0d3dc2845.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 0x1aa579d4c45b18e6689c05b66bf0f4999cdc320e21735c0e22803921e7eafa77. 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/DEU672101680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6eb6ad38ffbca177fa35e91ea5599fda001883d581227d391503ccdd560368. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PT6DV2400061.
Far Away Place - Jody Wisternoff & James Grant Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442df626516a3f5c251288342fc49ca81ffe2fe3bedf0d8c4c5bcd0b9c9843b7. 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/GBEWA1702658.
Far Away Place - Jody Wisternoff & James Grant Remix [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c22bf728abfdcd735998894a89265c5ba004a4b5fc24007f0c841c43df56f8. 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/ES8741827105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0910792672facfa02529c931bd6be35441556371471a98fb069c0d4ef0e24e23. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBEWA1702711.
Poolside Ibiza 2018 Mixed By Moullinex & Xinobi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b58097557776fc5d59272ba109600de9da3d29f4c12550b432c79347564f84. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEQ121113927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc6ce3fbbb12367dd7ce2b629de7c19f4cf6a1d256993248a9186e1dc6d5d6a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GB5KW2003506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd1735e2f508709e2c09246a829d6edf8e3a9d2d1258215ffc42d009fda5b6a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEN962232404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd1735e2f508709e2c09246a829d6edf8e3a9d2d1258215ffc42d009fda5b6a. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/DEN962232404.
Far Away Place - Jody Wisternoff & James Grant Remix (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe071fd745e1b0a84d1a35ac37304f6b03f22ba5a125732adb52f46f51767e3ba. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBEWA1907304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331f31c9e7c1a19d209a02aabd75e08bf13870e01b01a585541d20d5adab7456. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US83Z2214786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aab47e8be5b5e08700e6ffdfb81989cdb52c2d1c5ea06a6ed4d5593b7743fd8. 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/DEQ121321034.