PNO may refer to: Pa-O National Organization, a political organization of the Pa-O people in Burma Pagan's Night Out, a social get-together held in Pagan and Neopagan communities Partit de la Na
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 0x693989cd9e0ce86743df4bc9b445026700e28a4a0c45a10a8d725adfc70a56b0. 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/e2f2dafc-3c6a-48e3-99de-cd49316811df.json and https://artists.proofprofile.net/proofs/artist/e2f2dafc-3c6a-48e3-99de-cd49316811df.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 0x55bd451eefe6670580c3ac3f6ac101b8b7394e40a9194b8c934a3733df8ebfe4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNJV2466867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b9171d954dd49caf1394af56e6a382de4729b5a95e410daf2d3b7870d6d33b. 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/QZW9K2442607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9dd653558a34ae88006082e69c12d57b3ce2346a263da1b3e4a5f0283125f6. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/US7VG2593064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bd451eefe6670580c3ac3f6ac101b8b7394e40a9194b8c934a3733df8ebfe4. 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/QZNJV2466867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc006a440d77803c7fd1f1199b65fe4f34f40fb69fef8e4364deca8faead6494f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJY2437372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fff2bf094a8f77b5174472e798381a7e10dcf44e8e53ccfc882a780ed32910. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZGLM2519710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596d5ecc2eade528d500037d83298e5ccd90d1abfcb706ccddb6338f41c4e9b0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG2593066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe768b0fc63bbf12b0fb8ff8ede7ab6911c16ed9b5ddef30d1d0ffc038144f4c3. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/US7VG2593067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f447165624cee1b477d42800fb484099ef2f3c9d4630663545748a6639e1f3. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/US7VG2593068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53fcfbe7fdda4ee4c5596e33945a76891db1164efed9e96df243392790dcda3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US7VG2593069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af0b7048b57291a39f58f48e998c5769fbf7af45a5aacdd5340283e116d91f8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG2593070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa856f20e646d53179ba506ad7dd87363767a4d86bcd5a3459f6caf15726fcde9. 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/QZNJY2343325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba55df2616613ff67b90447376683f36b4b588f9b17ac80c1f309b4244c009bd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US7VG2068806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba0dd12e92530638206a91589ba16ac1e0d282b2754d5403d85a317506b8f71. 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/QZNJV2357798.