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 0x967f2d963ec438b5fc7743bc207d3d82c91f978f2e67e38a27a6f7722ba7e8d4. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93bb490e-b6f1-4372-b261-8e98d23e491b.json and https://artists.proofprofile.net/proofs/artist/93bb490e-b6f1-4372-b261-8e98d23e491b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Britten: Billy Budd, Op. 50, Act 1, Scene 1: "Christ! The Poor Chap" (Billy, Dansker, Red Whiskers, Donald)
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 0xba131b599fe96f791100bc864494f23c15e0636cb54b578388343a546c5cd4aa. 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/GBAYC0801590.
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 1, Scene 1: "Starry Vere We Call Him" (Donald, Billy, Sailors, Red Whiskers, Dansker, Bosun)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd03470198a4d93300ca3a2b7fb3675d2080da0a1cb8670b1e2cf446ad4c03a8. 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/GBAYC0801592.
Britten: Billy Budd, Op. 50, Act 1, Scene 3: "Here, Lads! Here! Come Here!" (Donald, Red Whiskers, Sailors, Billy, Dansker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7030405253e8ae5541e6f349a5a136fc08bfd9c4e9c683fc5c6d987c84c4ac95. 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/GBAYC0801598.
Britten: Billy Budd, Op. 50, Act 1, Scene 1: "Pull, My Bantams!" (First Mate, Sailors, Second Mate, Flint, Bosun, Midshipmen, Donald, Novice, Maintop, Squeak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5deb38f6f609de20afdeef90e5e8ac0879899cab49ad165f7b8616afbedd7d35. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBAYC0801583.
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 3: "Blow Her Away, Blow Her to Hilo" (Red Whiskers, Sailors, Billy, Donald, Dansker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a85db3c88e233df331815ba4621f0a817d490e77f86813acd25991fe6f3c9c4. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/GBAYC0801597.
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 2, Scene 1: "Volunteers! Call for Boarding Volunteers!" (Vere, Redburn, Donald, Red Whiskers, Dansker, Sailors, Billy, Maintop, Ratcliffe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbb4b718c5f0b7f891c1d5507e000deff8e348646e91201a7b31c971ff13981. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/GBAYC0801607.