1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xbbf1d20a9f4ba931e36d3f0405f3643e9ed76068eea4c3a9eaed7b47786fced9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57075daa-92eb-40f2-bb11-56c65f5c1a75.json and https://artists.proofprofile.net/proofs/artist/57075daa-92eb-40f2-bb11-56c65f5c1a75.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbfda9b06c72457fd952b53eb77138a9675ba0891d3782325ea7a8f7ae7ff26. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4BcVT7u6CJz0uTd6JCopgG.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4BcVT7u6CJz0uTd6JCopgG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b2d387333a96be78785a0340754244e4bf66331027fdf0591c76bb77710c50. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4lQRpbu7pgxerOAPZOQwcQ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4lQRpbu7pgxerOAPZOQwcQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1a61a662ec675453df50e82895f93b1c0b5a58a3284bae3fcb2bf6da387215. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3tTRAF6DNsmW0uEVNIdc8x.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3tTRAF6DNsmW0uEVNIdc8x.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf315cedc3789ad1c8289132cbf424e1846ab795a1ae7289fe29e21c6f77dd7e2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3mJTb0kcVU4q8s9DvAJRvz.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3mJTb0kcVU4q8s9DvAJRvz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f06e0f2180043a146967700f24f67261bc230583821581c0c5b942fae85850. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2wVwL1EBE9zmvwp6e0cepx.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2wVwL1EBE9zmvwp6e0cepx.
The Americans (Music from the TV Series)
{"copyright_id":"0x12c0c59f59e04fbb7af3eca741466f6b2950cf261937866ad030f54f17b4fa5e","isrc":"USFM91400079","name":"It Must Be Done","registered_at":"2026-06-20T07:58:06Z","spotify_id":"6GJrHOgLOcElmsxLDVA1eE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c0c59f59e04fbb7af3eca741466f6b2950cf261937866ad030f54f17b4fa5e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6GJrHOgLOcElmsxLDVA1eE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6GJrHOgLOcElmsxLDVA1eE.