thumb|Gidon Saks Gidon Saks (born 15 January 1960) is an Israeli-born South African bass-baritone. Education Saks grew up in South Africa. His father was son of Lithuanian-Jewish émigrés whilst his m
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 0x64a03d62d487421cdcbf2ad95ca4043625ede1482de82333702326d8d54dba2f. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6d1eb97-2076-46fa-b9ef-cdfc3ac11dbc.json and https://artists.proofprofile.net/proofs/artist/b6d1eb97-2076-46fa-b9ef-cdfc3ac11dbc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Britten: Billy Budd, Op. 50, Act 1, Scene 1: "Your Name? Billy Budd, Sir" (Claggart, Billy, Redburn, Flint)
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 0x1dead287cd9320ed11066ad27aca19d1fa2fd0f8bb3ff6a033f06c7f76327008. 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/GBAYC0801586.
Britten: Billy Budd, Op. 50, Act 1, Scene 1: "What's That? What's Those Whistles?" (Billy, Donald, Claggart, First Mate, Second Mate, Bosun)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab2fe4f571bad325919652cddd16d8c66d720b424a484c290bb29d68542801a. 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/GBAYC0801591.
Britten: Billy Budd, Op. 50, Act 2, Scene 1: "Well, What Is It, Master-at-Arms? " (Vere, Claggart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea144a1ad22c1730eba92268c1f1fb44259594bf56368c9c7c9e7bf163699d4. 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/GBAYC0801605.
Britten: Billy Budd, Op. 50, Act 2, Scene 2: "Master-at-Arms and Foretopman" (Vere, Claggart, Billy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5629d6660bc1a5b1f0d3349ef707e79c79321fef15b8763597a06bab64360a. 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/GBAYC0801611.
Britten: Billy Budd, Op. 50, Act 1, Scene 1: "Boat Ahoy" (Maintop, Midshipmen, Flint, Redburn, Bosun, Ratcliffe, Claggart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616baad29167a2374ba098d767159736cd71fd431ef0118907fdd537b8d5761e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBAYC0801584.
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
Britten: Billy Budd, Op. 50, Act 1, Scene 1: "First Man Forward! (Claggart, Red Whiskers, Redburn, Flint, Jones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052b2c3c53853bb8fe77d3d62809527da90383b5ac626033093d4c65eba42195. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/GBAYC0801585.
Britten: Billy Budd, Op. 50, Act 1, Scene 1: "Billy Budd, King of the Birds!" (Billy, Sailors, Flint, Redburn, Ratcliffe, Claggart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b58bce1c56530d6f54d3998aea19ad24dc44199989e37375458465b8c58bd9c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBAYC0801587.
Britten: Billy Budd, Op. 50, Act 1, Scene 1: "I Heard Your Honour!" (Claggart, Squeak, Novice's Friend)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fe44cf8d1c26f5cb5ee8b812513039858bece3dfe6130f2a928e2f81ac14e3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBAYC0801588.
Britten: Billy Budd, Op. 50, Act 1, Scene 3: "Hi! You" (Billy, Dansker, Red Whiskers, Donald, Sailors, Squeak, Claggart, Boy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8a10e5f2a48cc34c4e4ef68d326d679283d4569487d4331a6e707b080380f8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBAYC0801599.
Britten: Billy Budd, Op. 50, Act 1, Scene 3: "Over the Water, over the Ocean" (Sailors, Claggart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aad3123bf3118153a85f396c2ea55dc0490628988e8011ad79f3d5c7eb6d73c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBAYC0801600.
Britten: Billy Budd, Op. 50, Act 2, Scene 1: "There You Are Again, Master-at-Arms" (Vere, Claggart, Boy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb4090b0b36bb4cb763a59c3cbd2f6251d26d0ee2f7bf6777b397fbad73c38f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBAYC0801608.
Oedipus Rex, Act I: "Voici Creon, beau-frere d'Oedipe…"
Stravinsky: Oedipus Rex & Apollon musagète
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cdd6408169ad95118991e73661a662d7b724dc3d415daaa218c2bfddd1978b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBDGQ1325102.