Delivery may refer to: Biology and medicine Childbirth Drug delivery Gene delivery Business and law Delivery (commerce), of goods, e.g.: Pizza delivery Milk delivery Food delivery Online grocer Deed
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 0x359d677490a40d528b3cab2f55a8040d5714044690aee38431b4bb4bcddac311. 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/cda0a6a4-0f25-4588-9af0-c3e000be554b.json and https://artists.proofprofile.net/proofs/artist/cda0a6a4-0f25-4588-9af0-c3e000be554b.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 0xf04d8e172641824a78018ddf016bf2e8e2ab99b09d34b0a85360c8cf9f82628b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHN92160578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a71810b84e4a2c912b0536a53f80006bfa6b05ebf3c84c2b0132de078ad92c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA2Z2200867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee06c215b8ea374ed57800003788f51a96b1e56a78141967d32573c1e6ffc41. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/USA2Z2200865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7431f2d898797c2ec9d22953926fa7974b2f4a2bb0c707e83d1ebfb111b430ca. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/USA2Z2200866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115a64162b48212945d74e996d26c0703e05e8fdbf7fa3f21e44fc9a41e16fbf. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USA2Z2200871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b5990bb96417a8bd5c4dc20386d3b32ce4c7fe165fbd05ff13d9acf47b9b35. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBPVV2400386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054f574b850500f008afe6ec0a93e4d566fb8bc62e84c0b2670173373814cad2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBPVV2400391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054f574b850500f008afe6ec0a93e4d566fb8bc62e84c0b2670173373814cad2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBPVV2400391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96717381a3a5aab251be990b5f3f08ac1cdcb3d67619c250ecd68e645990b3e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBPVV2400395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfed014013a2bf21eb69fb28bb3de82d4f273b9291608eca227befe911aa60b2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBPVV2400388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b5990bb96417a8bd5c4dc20386d3b32ce4c7fe165fbd05ff13d9acf47b9b35. 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/GBPVV2400386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac261dd9f5134825e61c42b65d5a5b056b72d7d1f81a330cc822f5d2a37849b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBPVV2400393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900dda929bca064b455c59cb7158a15cb8b64d94544f887d16e4a20d30aea916. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBPVV2400394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96717381a3a5aab251be990b5f3f08ac1cdcb3d67619c250ecd68e645990b3e. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBPVV2400395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74489d1aaccfb51b64080f2a8d7d20e38b7e8f5f5b20b8d7075456b8c05606a4. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBPVV2400396.
Deadlines / Operating At A Loss (Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ac431c9ebd0dcc9a83d32e511a7553f055ca8b8df13e096600feb34d0c7d53. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USCGJ2114404.