PERC, Perc or perc may refer to: People Given name Perc Bushby (1919–1975), Australian rules footballer Perc Horne (1890–1990), Australian rugby league footballer Perc Horner (1913–2001), Aust
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 0xe46b3240fe7bec5e8ea2facbb86aa19a1cd053c218e487c649c70838ce9a5b43. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68228a24-6af6-4879-8a58-44cfd10899d2.json and https://artists.proofprofile.net/proofs/artist/68228a24-6af6-4879-8a58-44cfd10899d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hyperlink / London Isn't England Remixed
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 0x3b71ebc5a847ce15e40baf274d7da981fc997f4139c8eaaee0e4af4996282cdd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBUNP1800201.
Hyperlink / London Isn't England (Remixed)
Three Tracks To Send To Your Ghost Producer
Three Tracks to Send to Your Ghost Producer
Look What Your Love Has Done To Me (Remixed)
Look What Your Love Has Done To Me - I Hate Models Primitive Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ef3dfd68d54f49f3c1d7d31860c53621f9deb5b6d1b0b81467cf0cf2fd5152. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBUNP1908501.
Look What Your Love Has Done to Me - Amelie Lens Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac73f0b062269051ba0c7f63a774e537d23adfcb91d147345422c3a32f75425. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/GBUNP1908502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ef3dfd68d54f49f3c1d7d31860c53621f9deb5b6d1b0b81467cf0cf2fd5152. 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/GBUNP1908501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1629fbf6d56a992a9c29135d740112cbd4d0dcc26bd875ce1d02db5f8f42b895. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBUNP2300502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa879d0b47f0186db12f994bf5a81900573576164bf5ae6e2a8d4661770827adf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBUNP2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042d2dc3ca11b50797d4811832ccaf5471868628e83d862e4b540e9cbd68d303. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBUNP2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8832481f170ab88e6ac831123213436d5d584c96e34f3722f4608fa809614b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUNP2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a1ecd8ba95f37203000e4bb25fd49566355408a2acd8529d93782eedbc0e00. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NLCK42502068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203ea88ce304da8010259a80ec106ce94fb6ce78e04f53193df8a9bbcba5892a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:04:32Z), 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/NLCK42502071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27040c1a1b5b29cbbf334269acf11cbc9648e2cda071b3d099b5f12da80266b. 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/GBUNP2500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843cfbdd20973af6747044f74f813cb71ae4189d42bf6d11409d0d2dbfd55534. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:04:13Z), 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/GBUNP2500103.
Milk Snatcher's Return - Zisko Ceremonial Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9a3d6d0cfb057ae04133e7daf9b58501660fca0f3edbf5b2dabae9d1f5503d. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/GBUNP2500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd608652fbf4b1020da5bddee81240eaefef8ddddf41ef4edf4b3a793cc6a39e2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBUNP2500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67f1d64c4c66a8f9346d419c7112ec05e5d17dc8c6e6aeafe65a60dbab1cf07. 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/GBUNP2500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43768629ad670174dfd08ee04255d3d0684c013eae16fa104a6657fa6928c0cb. 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/GBUNP2500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47eebee86a2b5b1dec1a52fddafd60a7af3a8ff57c6bf647bc69c47262eab7b5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBUNP2500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9597f7183ea65baf9f9d334ea3e57cde2d91d9b6f9dc515b95636d854001835. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GBUNP2500301.