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 0x6b4a60882aa1888d190021cf9cbaf6b8b2a403a7d67d7e059269330b0d38b7b1. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ed434a7-82bb-4cb1-a893-9626a2a2582a.json and https://artists.proofprofile.net/proofs/artist/9ed434a7-82bb-4cb1-a893-9626a2a2582a.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 0xbdda306cee72582acb8bb474d1c6bfd7b4017dde44854c8b892f3efe3c78615a. 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/UKR6U1900012.
Pity Party - My Delusion Gothminister Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a107e22460ebd2c555307c73d5a9a7c36b94e63e8ee7566aff83b5d6884ef4b. 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/UKR6U1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae175533e0f6b077a38a670b41f82ae186a61f04c4577c773748dc0c71456272. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/UKR6U1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27218cc0caa00294563502077d44afd333d45782f161e10408e2698da2b0549d. 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/QM4TW2460794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf830e1bec8e533b12e251869dbcb1a60f9c9aa30a0330b1072242e99ccb03a1. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/UKR6U1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9e5ddc7919b36aa03214ed88a0aef1e2cb0a2a626f090f976255c48db2cd13. 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/QM4TW2442693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431aa175f36d688b37c7e005871bed455f35429b92e4585be884f33a3d3ff37e. 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/UKR6U1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35d6dd2ad3b185f0d894f70371c67cea31153c31d92dbe8f353b4e40f1794a4. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/UKR6U1900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0889e3e3de486207474e4d09a4b0a8f6052b77310331fe29636e38b4c83ccb4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/UKR6U1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c730f0d8a0d3c4de0a1c725bc283f0d6dc7b7c34444e813c28f1f2f46ec7bd8. 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/UKR6U1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093966da7fc246be34c7c9ffad783dc1860d97977f757b26d76e49af6c487081. 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/UKR6U1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89099d6e3eb7ea940a43788909efe31456e9ed14914c06ceba2a5b018c306753. 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/TCACA1491316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6c42ccd61e714956beaa6964f380ade7d02641c7a43da22180574efa3c0478. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/QMEU31619684.