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 0xdfab8118dfa99ed7d5343f040b022572d7c305e4b76a7a069d0a7409b6f8f1da. 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/ea5fb9a6-8e78-43c9-a731-337776cc95a5.json and https://artists.proofprofile.net/proofs/artist/ea5fb9a6-8e78-43c9-a731-337776cc95a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Rusty Kingdom (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
A Rusty Kingdom (Inspired by 'The Outlaw Ocean' a book by Ian Urbina)
{"copyright_id":"0xc0eeba9e4cd24bdf620bb6941ce6aca6c4d0db7d370136d29494202a556b37f8","isrc":"NL1LE2000774","name":"In Time","registered_at":"2026-06-20T05:50:51Z","spotify_id":"1tWqVsf94RjTOcjimspvSm","type":"track"}
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 0xc0eeba9e4cd24bdf620bb6941ce6aca6c4d0db7d370136d29494202a556b37f8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1tWqVsf94RjTOcjimspvSm.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/1tWqVsf94RjTOcjimspvSm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98349487539bea5c53cf3b346263bd38a8a139ccbcc48766bace4b168364d26d. 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/0lwwKUUy5hDwM5xHoS36jd.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/0lwwKUUy5hDwM5xHoS36jd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe267e2423d50ce267070356eb42910c6024725ff236fb29bf9d22434cc73aa72. 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/0R2KPhScxyAuujvokVHclb.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/0R2KPhScxyAuujvokVHclb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b74e560146135787e32536fc0ef8040edcb933f8fb5c003450fae93a42a250. 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/4eso3DTXyvxEpCVGeOzJpB.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/4eso3DTXyvxEpCVGeOzJpB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eeba9e4cd24bdf620bb6941ce6aca6c4d0db7d370136d29494202a556b37f8. 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/7x92bRZvsb7LXtmUmkTVxP.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/7x92bRZvsb7LXtmUmkTVxP.
{"copyright_id":"0xc0eeba9e4cd24bdf620bb6941ce6aca6c4d0db7d370136d29494202a556b37f8","isrc":"NL1LE2000774","name":"In Time","registered_at":"2026-06-20T05:50:51Z","spotify_id":"5lUVLZHP3UGTCnrfxDAzaw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eeba9e4cd24bdf620bb6941ce6aca6c4d0db7d370136d29494202a556b37f8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5lUVLZHP3UGTCnrfxDAzaw.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/5lUVLZHP3UGTCnrfxDAzaw.