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 0xc6ad3f483fb8e0e9de1dca54887cec823aead4a9dee6f438f393201ddc12523a. 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/c925037b-72fb-41ee-a095-f0a4da21f454.json and https://artists.proofprofile.net/proofs/artist/c925037b-72fb-41ee-a095-f0a4da21f454.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 0x22a2d09aab80d8f6ddc2d5e1e3ed56a52f54d07dbcb5279cce350e602ba6c1b4. 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/7bkzlEJJLmV6wMJIBhYAMi.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/7bkzlEJJLmV6wMJIBhYAMi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688b62fc8aabe2625287f9984d4c508d05684c6609fb136d53304f8795c3513d. 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/5kpMBRlNBmjz7ZXHnlfvrB.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/5kpMBRlNBmjz7ZXHnlfvrB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286e6e7ce3cd9c1c9d517bfe2e79cb264c56e8dcee16cc5e8b8bb34682fb365b. 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/1mWzZ2fDcm7d3g4b0RNNK6.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/1mWzZ2fDcm7d3g4b0RNNK6.
{"copyright_id":"0x34734ef348d070296834fe1807ba939a05454ccce69a8b5f685ca20ddcbb37af","isrc":"GBMA21949053","name":"Ring Ring Ring (Featuring DIRTBIKE LB)","registered_at":"2026-06-27T15:06:51Z","spotify_id":"692stWnQskHH5ObTFnMJFs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34734ef348d070296834fe1807ba939a05454ccce69a8b5f685ca20ddcbb37af. 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/692stWnQskHH5ObTFnMJFs.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/692stWnQskHH5ObTFnMJFs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2877a66a507d37aac6664da1ed3c513d0e791bc14121b9ac029956b5f38e655a. 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/1MPfwIhM7MsDVFh0kaMtCY.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/1MPfwIhM7MsDVFh0kaMtCY.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c5485213bfd01543d857ab89bb030e5e3c883cd41cf0630e65a4256439e61d. 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/735l0t5eFGOuZbaPTV5BBP.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/735l0t5eFGOuZbaPTV5BBP.
{"copyright_id":"0x9601b93d7ae635ee7d14faccf00c45b10add821f945e1a44ce19601ae916fa95","isrc":"GB2DY2000574","name":"Last Night In Marbella","registered_at":"2026-06-05T12:35:26Z","spotify_id":"2KYD1kD5akh90x6BghagTR","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9601b93d7ae635ee7d14faccf00c45b10add821f945e1a44ce19601ae916fa95. 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/2KYD1kD5akh90x6BghagTR.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/2KYD1kD5akh90x6BghagTR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbef6e7898fd7834ebff84aaf4e22da3ae3b668e3979c9db897d82929a3d29dc. 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/2PKO1SoiyECfGMU7ziCzRO.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/2PKO1SoiyECfGMU7ziCzRO.
{"copyright_id":"0xc3f79bb14cd84edf0938ea69884e18773a664d77a23370c653f5abeedd68d8fc","isrc":"ZZOPM2002124","name":"Demons (feat. Dirtbike LB)","registered_at":"2026-06-05T13:44:32Z","spotify_id":"75PZuTrIz2dqsyscNHeXGN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f79bb14cd84edf0938ea69884e18773a664d77a23370c653f5abeedd68d8fc. 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/75PZuTrIz2dqsyscNHeXGN.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/75PZuTrIz2dqsyscNHeXGN.
{"copyright_id":"0x70b06103818a6dadf3088ca3b97e2afdee01dd09ce8f1f28b176debda6f514ad","isrc":"GB2DY2200730","name":"Buy It Plain / Flowers","registered_at":"2026-06-06T11:01:32Z","spotify_id":"2H8TKJx4XPwgRXlpJQHrWL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b06103818a6dadf3088ca3b97e2afdee01dd09ce8f1f28b176debda6f514ad. 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/2H8TKJx4XPwgRXlpJQHrWL.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/2H8TKJx4XPwgRXlpJQHrWL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0363136627d65a15e5a23231863f90838bf0eed1302f7735f9fb17ac4f6cc16. 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/3xRTbUn13KgrQfAahtiCWG.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/3xRTbUn13KgrQfAahtiCWG.
{"copyright_id":"0x877e357a3c8e067769e4232872bc93d52263fdf6e45f6071bb5fed91d39eda89","isrc":"ZZOPM2003963","name":"You (feat. Dirtbike LB & Young Adz)","registered_at":"2026-06-04T06:51:35Z","spotify_id":"6PHU9Mta6YuF6jnbTR5Ooi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877e357a3c8e067769e4232872bc93d52263fdf6e45f6071bb5fed91d39eda89. 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/6PHU9Mta6YuF6jnbTR5Ooi.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/6PHU9Mta6YuF6jnbTR5Ooi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9251104ba2b991704ef009194bace3be6f89b08d5438ebe798a223f20e6e314. 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/4o48inbA3UIzhN6bXmw7mq.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/4o48inbA3UIzhN6bXmw7mq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9251104ba2b991704ef009194bace3be6f89b08d5438ebe798a223f20e6e314. 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/3LLEn6mJUT5o5hNZo0KBlj.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/3LLEn6mJUT5o5hNZo0KBlj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb03eff09ed67b6931303536b5d0600e07c0b0457ea26c45be9858fa56f74ece. 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/020fZ7P86z3yNApPb6LThs.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/020fZ7P86z3yNApPb6LThs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286e6e7ce3cd9c1c9d517bfe2e79cb264c56e8dcee16cc5e8b8bb34682fb365b. 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/0bSS6CS8rnElnWiqHGl4Y1.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/0bSS6CS8rnElnWiqHGl4Y1.