William Blake (28 November 1757 – 12 August 1827) was an English poet, painter and printmaker. Largely unrecognised during his life, Blake has become a seminal figure in the history of the poetry and
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 0xfbe8e66ea651f0c7f8f513e530e46f1ef80745ec85c761e9884df97a3825bc2f. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cce0e208-2eb5-4b2a-99b7-efecb0fdeb7b.json and https://artists.proofprofile.net/proofs/artist/cce0e208-2eb5-4b2a-99b7-efecb0fdeb7b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Songs of Innocence and of Experience (Unabridged)
The First Book of Urizen. Readings of William Blake [Spoken Word over Beethoven's Moonlight Sonata].
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 0x3a2457c2295799898d1e45da36e8dd43aee69405f49ea07141666d65ee84244b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEG320738433.
The Dam Busters - Rousing Songs, Anthems and Marches
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dd312cf2ebacb92133febbe2eaec97b8328a496c505c209ef691f99c57fa51. 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/AUAB00350089.
Tre citat, Op. 59: I. Ingen fågel flyger för högt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cacde614b7d1461cc18544c0c3cfc6dcb04fb52874caff47aa745dc72cd6456. 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/SEVCE2211910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be8930b3b863a22a65c9cf6831db2b359a2b5f22c6efb2a9bf712aa3a896468. 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/GBN3Q1101506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3b60e7306896ee7dca000f504dd8b4446cb652e91bac7db089044aaab7ed9e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAGA1702201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f877550c9aca2f2cae45c07180921f1c1eeadc72fd46a595b4790bb56645f20. 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/NOMPP1708090.