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 0x7a9f2b2af4e84a65de16f32249a037bb14c9052a42b3ac4b11dd5f83f9df3380. 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/ae2f7c20-e0e9-45de-a38d-ddece1472115.json and https://artists.proofprofile.net/proofs/artist/ae2f7c20-e0e9-45de-a38d-ddece1472115.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 0xca13bb3ac2c969b1724bec0bf5d87c23777cc0ea43147ecbf5a030b1692e561f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5TWpjpzVh9hBtqjgSSKI11.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/5TWpjpzVh9hBtqjgSSKI11.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289e66021d6b1fa52800490b5719d6c6d45c044acc6e33201872eb00bf5ab09e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1vq2dNh7qLCBZL3TaMajZq.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/1vq2dNh7qLCBZL3TaMajZq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaec5e24f92d998559f42ea256f30fb0377b70409b4ed6e059f5daa312ae70fb. 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/7AI1fI0lpuc9111fXJAIfp.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/7AI1fI0lpuc9111fXJAIfp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cf04b586677f61118d5dcf246718cf2f8d64a99c0b332b766924101278aacd. 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/3paYJlgpKeooFNSM9EnW5y.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/3paYJlgpKeooFNSM9EnW5y.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fbd72238ce44aa00780eb89c29519153499fbfc9aec2f27d4e63f4485ba9e4. 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/1LJjiTNTBAFk6Qz4oaaWps.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/1LJjiTNTBAFk6Qz4oaaWps.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c39d218908208761f952bcc34023ed838d96056507322a1d23e85ba3a25326. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6eKcPuJpIxDuqWqMM8JJNn.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/6eKcPuJpIxDuqWqMM8JJNn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e71ff3c40b71d25ae6b9615c412f4e6df732e4d277a550f8099943a7a859411. 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/13zDaVHRaVuzXRZKaAflKU.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/13zDaVHRaVuzXRZKaAflKU.
{"copyright_id":"0x579a57698a7c6c18c458bf8e5bc192eb2e81397dfd978d195fecf2de71152d45","isrc":"QZKDK2201837","name":"Neighborhood Story","registered_at":"2026-06-24T13:57:24Z","spotify_id":"3mD5NIcqzTDNQQuHQUyNqo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579a57698a7c6c18c458bf8e5bc192eb2e81397dfd978d195fecf2de71152d45. 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/3mD5NIcqzTDNQQuHQUyNqo.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/3mD5NIcqzTDNQQuHQUyNqo.
{"copyright_id":"0x97f46ab8f97efaf3f5b33c8af3e95f43f9f860f6bb9a10feea2b49867dd77d2e","isrc":"QM6XS2001985","name":"Soul Eater","registered_at":"2026-06-25T21:36:10Z","spotify_id":"1waLdoZZZwD9APRzi3BoeY","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f46ab8f97efaf3f5b33c8af3e95f43f9f860f6bb9a10feea2b49867dd77d2e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1waLdoZZZwD9APRzi3BoeY.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/1waLdoZZZwD9APRzi3BoeY.