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 0x51a0263f1034a2c492855d82be372213aba86b84f65da91fb663966e3a7299f7. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d79e36aa-7657-431e-a7de-889b3bd6e524.json and https://artists.proofprofile.net/proofs/artist/d79e36aa-7657-431e-a7de-889b3bd6e524.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gill Bay - New Music for Flexible Instrumentation - Demo Tracks 2018-2019
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 0x4a4be74788ba5f78a597269bdd8803edd68dce6169bb4415ec0cfbf9bd704121. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/NODGN1808020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e182f1eaf6126a3b1ab1a89a7732f2ddf01c3880e8ed06e461f665f04cb3b2. 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/NODGN1808040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ab5ed7a9b07069969bf81b3afbb1c2ce3dfd3e9b76cc7d70b02987a8029f7b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NODGN1808030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295fe0a5b323750f93e15c42ecddfd0915c8d40fce0c7545d127e6252c52f51c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NOBFM1803110.
Make Way for the Band - New Music for Concert Band - Demo Tracks 2014-2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b805e124412111045e5d05ed359cf22bc6c5989c38bd2110eea648bcf34ca0. 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/NODGN1409050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7eac04c0dfac5c61e12859d5f22e00085a9c274e15b35c83b5c9bb570cd8fc. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T20:31:23Z), 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/NODGN1409310.
Tales and Myths of Gothia - New Music for Concert Band - Demo Tracks 2018-2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0ee113b5e73f370eb2f1947258661eb4d83bb28026c7386c91a635d445e655. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NODGN1807330.
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
THE STAFF BAND OF THE NORWEGIAN ARMED FORCES
Green Hornet - New Music for Concert Band 2011-2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432013c3e1c0974f604289c8d590dd1e6da27ffeb28f043243b06d2f8dec8efc. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/NODGN1104330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c63b43149b3686f193fdc81a7c1348426d5f0c187e808f171ed8e7f8c5ce694. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NODGN1409290.