thumb|right|Konstantin Makovsky, The Bulgarian Martyresses, 1877. Depicts bashibazouks of the Ottoman Empire violating adherents of the Bulgarian Orthodox Church inside one of its churches. Sacrilege
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 0xa37cd096365fff55940c98f8eced9abaab7e98af08defe027e9a5deb689ad14e. 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/3d81af0c-7a29-4161-b272-dd30681f6393.json and https://artists.proofprofile.net/proofs/artist/3d81af0c-7a29-4161-b272-dd30681f6393.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 0x1ba4dc3a77332ecc68de33d07adb197c84458ff56dbff43c8122840319e431c9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM7281735258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987962e7075917ceac9678f13549088a9ddf2026dba9e46e3eda8f89a06f8854. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM7281735259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8799f0659c5d70de2a24a3f09cb21487e29a4ba1e8f27298603814247340e1b3. 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/QM7281735260.
Time To Face The Reaper - The Demos 84 - 86
It's Time To Face The Reaper: The Demos 84-86
Ambulance Station Squat London 1985 / 1st and 2nd Demos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5970b48f2a102cefc0bd120113ce4c8cc60e6ff3d464b4b0ad114723281f10. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:58:22Z), 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/QM4TX2128303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd06bd4cdc39890677310a2c05dff2ef906d40a0d2528ee83273545f586909c. 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/QM4TX2128304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe073695a7a6a85498c9ac93ff2202f6b8f32ff0998e5959f63583901c5644232. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM4TX2128305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759d84583cfce1c00889e3ef7bdb4bd50274ba89d25a774475dc1f0206a73839. 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/QM4TX2128307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3430dfa0317b965b9d690545de343ac2d30fbe373c0b9386c9009914a930d05d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBLY0601596.
Trapped in a Scene - Uk Hardcore (1985 - 1989)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4c281cbcf8d3d844a87d5a10e43245025421e1924fe40b3eb10c2c07236a42. 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/GBBLY0903214.