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 0x7b24348fd93f4d926d394942957da87e211565246bd4258aff9be6b3e49fdb34. 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/f7cb33a4-81da-4ad8-aa86-00e316aa5663.json and https://artists.proofprofile.net/proofs/artist/f7cb33a4-81da-4ad8-aa86-00e316aa5663.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 0xc055e75b292c67818543b548c3e161c698ea9e42a592526f31b13b1fffca543e. 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/0425UVaQx7LAFsSPGZBFWf.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/0425UVaQx7LAFsSPGZBFWf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1beb4b0d3f971335322ad01c22aaafd9129b4e4f6ca40db64da1d23e7e123ab2. 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/4ZVwI1fULN7lnuURFejkbc.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/4ZVwI1fULN7lnuURFejkbc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e7554fddfd9fb42b9a7a9ad637293ec5aa659a70544d9a11b19cabb1f16d9f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7mRVOd2xS6xS5sZBbfbNBU.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/7mRVOd2xS6xS5sZBbfbNBU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6e4a30d7a8f255d6066780981668f1fae9141665fea5a8a37f4c65e3b365f2. 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/4iYnZjuophmnI5yAmfauhl.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/4iYnZjuophmnI5yAmfauhl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27999a5aec2c9c98346e248ecbf86b98bc44e9e8d4291934e498aa86a6577378. 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/3mBUikRUXwi0kg02kDbfnp.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/3mBUikRUXwi0kg02kDbfnp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f1ee79700d78955d548df0a3a41dfdea477386526c0c18b344b7910a4ac519. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3msxmYhFd2nnesYJarS0W3.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/3msxmYhFd2nnesYJarS0W3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0a7a85eba1ecfe21b2f09dd63beef9eb0d953ff39390b2da96af88f8462d9b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5IemvGziUX0CT6Kns9xyLc.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/5IemvGziUX0CT6Kns9xyLc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00deb90556084b3668daa0c9df68278f2ea1e26e72b581d163a10ca1321eb1e. 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/0VbVlHLifT1TqlLmZpWB89.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/0VbVlHLifT1TqlLmZpWB89.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9e30f48557a7a45460811addf2cc2c962ba91291eeac8384556ebb7e431fe5. 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/1ATj2IL7Bi5xrkhUKJbBUx.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/1ATj2IL7Bi5xrkhUKJbBUx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6e4a30d7a8f255d6066780981668f1fae9141665fea5a8a37f4c65e3b365f2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2zO29KsugyI2KUovw5WeqS.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/2zO29KsugyI2KUovw5WeqS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e7554fddfd9fb42b9a7a9ad637293ec5aa659a70544d9a11b19cabb1f16d9f. 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/1uNEklPIubZzmCvd6emsDP.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/1uNEklPIubZzmCvd6emsDP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46736a34ec7cda2c8276cd062c3ce71b14ec17242b2b864cf761955d83778338. 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/3z1YCDkuNRSI5bRaqh1Xxx.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/3z1YCDkuNRSI5bRaqh1Xxx.
All I Want for Christmas Is the Masked Pianoman
{"copyright_id":"0x6dee5edde638c39483e9431ac4ebd3ea1f2a5940271aaec09c8336436402e241","isrc":"DEPI82218183","name":"Mary's Boychild","registered_at":"2026-06-09T00:26:22Z","spotify_id":"5yyxBmvuGEOMZ4DKfhobNx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dee5edde638c39483e9431ac4ebd3ea1f2a5940271aaec09c8336436402e241. 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/5yyxBmvuGEOMZ4DKfhobNx.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/5yyxBmvuGEOMZ4DKfhobNx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00deb90556084b3668daa0c9df68278f2ea1e26e72b581d163a10ca1321eb1e. 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/27PUypwEvP5YExUEFUGg8n.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/27PUypwEvP5YExUEFUGg8n.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f1ee79700d78955d548df0a3a41dfdea477386526c0c18b344b7910a4ac519. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7aUvdK4ijMLLm29HAeuQzm.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/7aUvdK4ijMLLm29HAeuQzm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0a7a85eba1ecfe21b2f09dd63beef9eb0d953ff39390b2da96af88f8462d9b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/28breCSDTKxrWa96iZBNlq.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/28breCSDTKxrWa96iZBNlq.