Halley may refer to: Science Halley's Comet, officially designated 1P/Halley, a comet that becomes visible from Earth every 75-76 years Halley (lunar crater), a lunar crater named after Edmond
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 0x37cc6478a365f05f50b30e339b9f3345cf08cddea801c4901849660e1f9da888. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74365a85-1ef8-4ab9-a9d5-67249c36b549.json and https://artists.proofprofile.net/proofs/artist/74365a85-1ef8-4ab9-a9d5-67249c36b549.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 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 0xc7eb154a71eaedf58a8019e4aa7f0969a7885b05b0b0908d9e41ce154728e972. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPTF02311001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311e7f98dedb49c2106d958a99111c81a5af28acec86525a2ebeae2301561753. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPTF02323901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd213ef25a8f2f758eaebeb6a7b6edd2292709eaf0ef0fb7721259930c63aa5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPTF02330601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38ce2f44c18ba54d246c9e7884ed5acd6d227f5feafe9d52e942720f5e21142. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/JPTF02330602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02554f4d59944cd2de57376bd1d1b5180627abf6d667d69ae88280742ed4a09. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPTF02330603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bec2cec9804ae17f280296390cb2a70bc123a724319c58f3b52b00a75dd410. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/JPTF02330604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc978d956c038ecd5ea22c1c23a87fa78f80ea6797de7c40575d481f8874226cc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPTF02330605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1d96742b8b27b618b74bc2c8aefb9e19fa80008ab44e3bdb8705672e4e0cc1. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/JPTF02330607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf8db1814dbd8ec26662c426f0a5aac3cf58a593be1435ffd1ac6314e45fe3d. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JPTF02330610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410a7a24b179a22ca790638771d60cf79fec240c9df2a42d072619e32ff589a1. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPTF02330611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a9cacb009ac26385b9694a2210108ea0bb9923cc7759d784d314c93d4714e0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPTF02426001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a7ae33fc56fad87a10a45fdd54167c9b1287cf8180c2653391ec99b9231c43. 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/JPS802352824.