KPM may stand for: King's Police Medal for Gallantry, British award Königliche Porzellan-Manufaktur (Royal Porcelain Factory, Berlin), German porcelain manufacturer Koninklijke Paketvaart-Maatscha
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda98b2d3dda2ddf8ec80f4f1cd1ffe556b92271543a44b7359becc6079dc5f7. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60b52806-e405-4b60-b316-473684737cf4.json and https://artists.proofprofile.net/proofs/artist/60b52806-e405-4b60-b316-473684737cf4.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74bd56afb0d55a8a96511d4463297fb44cf3273078c42927d4275e8eda475c7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWQ2481845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dd58dedb37b0b9c69024745ae5bd57718a41bdfa40756474cdb4c4e723d00b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZFZ62503623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa3f10c58b9450448ff1241f3d7c13bdedeb268ef2d0670b38d3b8db8fcfc59. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA62570133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dd58dedb37b0b9c69024745ae5bd57718a41bdfa40756474cdb4c4e723d00b. 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/QZFZ62503623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8b6c52c2bbf96a23f3437643036916964ff257f8a0910791ac009088683e14. 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/QZDA62570135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b1658d2d9e1c6fbbcc90d735649bbb5765760322b04f7b6d7062c1531452a5. 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/QZTB32500777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e9eeb429e561ad6409f0bc3d7dcefffd7b291c62593049bf43436092bc1edd. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB32500778.