PPK may refer to: Politics Parliamentary Party of Kosovo Pedro Pablo Kuczynski, president of Peru from 2016 to 2018 Peruvians for Change (Peruanos Por el Kambio), Kuczynski's political party Othe
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 0x8793439faf1747e993e37d9166ac71eadfbeadfd7f5eef3b49d92c99cd632a10. 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/5c6db63f-05c9-4780-8fbb-bc13fd192040.json and https://artists.proofprofile.net/proofs/artist/5c6db63f-05c9-4780-8fbb-bc13fd192040.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 0xdee5cfcffc93aae672e307ef26835dd1af52a349265478c61e6500c42f463393. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QMFME2083968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7bd0b48c36d687c0a356e3b02cc920d996bdbcd380dfecfd8702b923892f16. 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/QMFME2083969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a620b81bef54d18491b4440a37537ca9adb0f375ac8255a91ece8cdd5c8819. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QM6MZ2122290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1fa4e8d42828167c7046828253a47fb8b462a7c142694a0f0345442775faaa. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6MZ2122292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9803ab0bcc808c9443653d4cd4236f5730009ffa24d69cd96475b8378944e95. 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/QM6MZ2122293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082afc6aada9e9fc5719cfe772a6416389fd2bc899e272a22f26a01b28c24dd1. 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/QM6MZ2122297.
Slave To The Rhythm - Mauro Picotto Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ebeae9ca626bc53df05571f4704fc7061ed9cb49f52f952b2a958f5d2dad55. 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/GBBRQ9900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebc82db67d6e6906e5fcb92b140e9ee5646f82c0f25ac05075d243bd990a8ae. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/RUA441500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb68d57d990c9e0bb55d369b59d852ed1188d24244b7f48f2d5fc377e117de6a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/RUA441500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6e44b9f186ffac29a7e3787b1252338a7b8d20bc040acde172983a3d252e96. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/RUA441700609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb6d9e41f5a337b4c9e3cc47d8aa6c05d84928460955e8339e4f13d28571b90. 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/RUA441800709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcc6b0ed1c95bce206449f8044689bef5d9012fc8fecbba1cb8eab6dd9d1965. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/RUA441800712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83cb67402da37892712ab457c41a6671f2c2ad5ce60490ae7e8904f8c36c970. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/RUA442200501.