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 0x635a093aa350e5a31c71a52ec47744a19cb7e4f5fdca89c08179705eaf95b302. 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/e2b4a798-b71b-46f4-9394-25e23a030c08.json and https://artists.proofprofile.net/proofs/artist/e2b4a798-b71b-46f4-9394-25e23a030c08.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 0x728ffab20c59253806efc42f74627601b0e537125e7769ca24270d869a4f2da5. 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/7HGy32mQMemzvwS7879rCw.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/7HGy32mQMemzvwS7879rCw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc42c85bc47b7a1ef00d4d8bef2ec53c70e1db2cac403c3052e96329b8d497d2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3LFL1Fz3ELdIa3z1TVqeDG.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/3LFL1Fz3ELdIa3z1TVqeDG.
{"copyright_id":"0xc3bf37777592ea3e6e209d404596978a030d850f0c73be529320ca9be1fd8900","isrc":"QMQQQ2000004","name":"I Wanna Live in Your Bedroom","registered_at":"2026-06-07T08:26:07Z","spotify_id":"661WUWwKZFjwSOAEhSAqlQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bf37777592ea3e6e209d404596978a030d850f0c73be529320ca9be1fd8900. 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/661WUWwKZFjwSOAEhSAqlQ.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/661WUWwKZFjwSOAEhSAqlQ.
{"copyright_id":"0xfdf552a65aea24462bbf9a1d5659121a578150e2e65f6ed73c794f5324a85a98","isrc":"QMQQQ2000005","name":"My Love Is a Hurricane","registered_at":"2026-06-09T19:08:54Z","spotify_id":"7rRsHUxGcy9lnHBhCf0Jtd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf552a65aea24462bbf9a1d5659121a578150e2e65f6ed73c794f5324a85a98. 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/7rRsHUxGcy9lnHBhCf0Jtd.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/7rRsHUxGcy9lnHBhCf0Jtd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0aa5a6c84bd32e62b6a955f539233427520b43e1186b7370c93a95a418369f3. 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/4jjLSTr4hydtNqpDlBz9Em.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/4jjLSTr4hydtNqpDlBz9Em.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627544cbca6bbe5db698986896a8eb0153a2afdb477e86e28351fa3e92186e9c. 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/65iIB27ZxkC7iwPeTiTCzC.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/65iIB27ZxkC7iwPeTiTCzC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3265dd5f5ee793877391fb9d562351fdae0feec6546f568e1b74e9eb2d20040f. 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/55m5zgbBsT3jvpauvxSgop.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/55m5zgbBsT3jvpauvxSgop.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5263e0cc334536e31497fc5a6a6380512137dd0be77de770f857abfc8d8e5c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2lKYwU3xsS003c7XOzHO8p.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/2lKYwU3xsS003c7XOzHO8p.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97667bd614469f036cc598b7c7fd080640cbf7d5a011946e5809899476254896. 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/0gojf4cCqjGkP41JzkI0nM.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/0gojf4cCqjGkP41JzkI0nM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa24947355af989f246bde81e07977191c2657bb74d398dd95bd0d42131334ff. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5MH5jh6U9l8GT7xNiFZcZ6.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/5MH5jh6U9l8GT7xNiFZcZ6.
This Christmas (I’ll Be Missing the Missis)
This Christmas (I’ll Be Missing The Missis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0870f20023bc0a34b1a25c6fe7f6f610a5b731555681ac99826f6d117b2e1e01. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4yTE2jsWoKduCEAcTnx1SC.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/4yTE2jsWoKduCEAcTnx1SC.
{"copyright_id":"0x1062600d98e327e07e16fec53a9237fc9743eb0b942fa33d6de96ebabb65ed90","isrc":"QZD7K2300007","name":"What We Daydream Now","registered_at":"2026-06-18T16:58:29Z","spotify_id":"4z1QyuPg3Hlf2Zeu9l9Vrh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1062600d98e327e07e16fec53a9237fc9743eb0b942fa33d6de96ebabb65ed90. 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/4z1QyuPg3Hlf2Zeu9l9Vrh.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/4z1QyuPg3Hlf2Zeu9l9Vrh.