thumb|Composer Anthony Branker in Brooklyn, New York (2012) Anthony Branker (born August 28, 1958) is an American musician and educator of Caribbean descent. He was born in Elizabeth, New Jersey a
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 0xf867e8fb5b054350bbc4bbbb22910831fa343a26570fba142771a110a6927993. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc655a40-08e7-4441-9de4-74ddc9609aeb.json and https://artists.proofprofile.net/proofs/artist/fc655a40-08e7-4441-9de4-74ddc9609aeb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
What Place Can Be for Us? - A Suite in Ten Movements
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 0x38679b0c9ae65dc84ca03dba1449a953f018a2272a7543facc4fbeae5a4cd77e. 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/US3M82406818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1fb7e507dc70e36e709a7e78e1c6bdc891da46b7670b9e77ef2ec77a527ba5. 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/US3M82406819.
The Holy Innocent (for KB and the Children of Gaza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fd0bf469426dd0416bbd27fc66b4630bb86204d7b50ef5b2a2d842cdddd434. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US3M82406820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4def7c9cb36b276d52c361a86e11f3b0fc286b8174b12a8d1a03859c05404307. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US3M82406821.
Three Gifts (From a Nigerian Mother to God)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac31927dd59b82f96ec44b4d7ea37fa9e913de9fbfcd2a72cb4a18583fd1648. 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/US3M82406824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f493b0abec45b2ca73fd1d9019175e8ef1a6fe2a241b84ffe0caa687dc16631. 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/US3M82406825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7042aba32584be35fec914ef5c488a63c10d2b58383ce51d8efe16f4dc9ad942. 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/US3M82406827.