Petter may refer to: People Petter (given name) Petter (surname) Petter (rapper), stage name of Swedish rapper Petter Alexis Askergren (born 1974) Other uses Petter Bay, a bay on Coronation Isla
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 0xa42090d159936a2181f69a7f9dd935373e798d4032c7efbcdffaa7ecdcd1f4e3. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9df6576e-97c0-4eba-9593-4852c1f3a3b7.json and https://artists.proofprofile.net/proofs/artist/9df6576e-97c0-4eba-9593-4852c1f3a3b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
These Days - Luke Chable's Those Days Remix
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 0xb1f9835b79c157d724f75add9c779b6c3a330bd1cf95c8bae8f6415f9d2ca498. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLE710620920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06dbf4f06ad483aed1e4719f8ebf17d26f985056afb6f7194eed305e9f53473. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLD681802963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb75f3e946088fd17776b119b989c8f85043a87c36eaddd25c02330e99d27866. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DKDH71000112.
Balance 005 (Mixed by James Holden) [Mixed Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56daa6ec3f90f1c51056639c81cb797acd2c14b5c4d9190bf0494728010c976f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUXN21809071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690e0a8e4fdb14f34677b9c76adf0520071be6024970f147be00362c59f906ec. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUXN21809081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fefedb0f516d29a1d4c83b6c77deeb7aa9cabe12696cb6d84da5328c5ff047a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUXN21809094.