thumb|The William Blakes consists of Bo Rande, Fridolin Nordsø, Kristian Leth and Frederik Nordsø The William Blakes is a Danish pop rock band who released their first record in 2008. The album was ca
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 0xc6d8eb2b1e45a3e64de7f226c19d6af24855bc016e25adaf3b8516071b355b48. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e11a768-5d19-400b-b1a7-4b7080bc821a.json and https://artists.proofprofile.net/proofs/artist/2e11a768-5d19-400b-b1a7-4b7080bc821a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14317b6cf7867a605576339410ac76f86ac9e9e028476b562feb1ba46133001a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DKHL30700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40e3578a8ec60fa1f29ef1be074db8d463982102eeb9fdfe7519a6770e84f1b. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/DKHL30900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834273f68fec70acaaac942fcb5471b8f6b6ab6db18eebdc81289ab09aa53ca3. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DKHL30900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e04c56092051e7c97dd9344d12ef98e5b17630206fdacf4256439b2fc1d77a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:13Z), 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/DKHL31000906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6c7edf25ccc5da36c6a0ba8256377501c24a63c2f635122750ec7b78ef511e. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/DKHL31100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c35c7e9608ec77ed9afba96c1e1ec61ca6338813b60fc01559f660b01d0785d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DKHL32400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa90cc70cc1a971cf5fe794c6adb817d2210f6cb4412622b1f74998f78e378da. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DKHL32400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357887e058cf0a16e6418a45ba0d63003d333c0bcd8699d1065647b2131739a3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DKHL32400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9351ded221e95516ea53f5a0c70f2dec3286979118e21652d0ddd05b0de53eb7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:30:28Z), 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/DKHL32400106.