Pitter can refer to: 48785 Pitter, main-belt asteroid Aslie Pitter MBE, British footballer Cherry pitter, a device to remove pits from cherries Premysl Pitter, Czech pedagogue and humanist René Pitter
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 0xbf9f44be4c822b8a0f0bdeee97357d5024dd0e9915966c2208dda6eb6c9e2008. 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/4b056af4-3c68-46c0-9c94-51fab8c8f31c.json and https://artists.proofprofile.net/proofs/artist/4b056af4-3c68-46c0-9c94-51fab8c8f31c.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 0xf8485ade5b174f7aea881eccae6d05090f3f10e0eeb2da65fee6b0c5f781be53. 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/USDY41568145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c661f3eb2e0a8f11d43eaa31b378ea192a783be81eb8980f849dd7df6b62fbf. 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/BRFU72200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7b3b21cd328d107e54698ec4cc055e9971ed4ed781e39020f8dfe15f3e08d0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BRFU72300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953c6193966f0f912c62094829666ff378496a592ff0c587f9f4a1b8ade2777f. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/BRFU72300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5048d097882ffa263cd5c46809cd44b052427a1763ee5d8c1935f00d44dab29c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BRFU72400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d73bb26398aaeeb7d83a9e592f5f70479a29b531a6f2395513fd90973632d99. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/BRFU72400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd309e03b110e8f453b28d6f207a386f6ec8020bf8bbb66015e7bb09bb1547671. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BRFU72400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9ac061ab150a2eb30fc7f6902e2494c011c97948d36a19be044922278886de. 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/QZNJX2360805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346cdd492b53f6aa5d423b7e69111cce5da8774d4b00ddd702c728a9df49910e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USX9P1416822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b1fe5caa64eedf595bb69065c2f9b70644d964bc14420048edf87d44f2c980. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USX9P1416827.