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 0xe1fa0338f66b3e59ececb5f0338d8e97c8f46fc85526aa57f048ee083a4ca8a6. 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/60e9907e-175a-479d-815a-ddba8e1eeb31.json and https://artists.proofprofile.net/proofs/artist/60e9907e-175a-479d-815a-ddba8e1eeb31.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 0xc14fc8c59107429d83f1664078006722c58d4e91803f5bf55c714f3839a6cc31. 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/0v94mIr2FwZR5p5wLfKmkj.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/0v94mIr2FwZR5p5wLfKmkj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16deb1eaf0593ff1984926831a347724b635b471c9d6928b484ab2bd794cf41e. 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/5YMusR71wyPGCc1J1N8hpm.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/5YMusR71wyPGCc1J1N8hpm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b862e55a1ad7b6f30c7b9b97860975a38082d352e9b4b507dcedee07b50780. 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/5l4KUY4yguuevjWmjn1ttf.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/5l4KUY4yguuevjWmjn1ttf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8c10e3ece513bf35ddb72e89ea1a0f1f6e599bf71c0700de0d7fdf81761caf. 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/1YGbqDqg0fBkpqHZl19Ctc.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/1YGbqDqg0fBkpqHZl19Ctc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a717326b812fd85d07adc08c875fd68744e57452e9a2e6f9ce970298bd4e3cb. 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/6d32NFRKZeN9F9pnKfXVuh.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/6d32NFRKZeN9F9pnKfXVuh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b5ef57654d0b0570997b7ef31869c378523d8c5441de97409e60cacf949609. 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/2qjHmz6QWwsECIqJHy43SV.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/2qjHmz6QWwsECIqJHy43SV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9384aa6cd07a40ba46940b8fcd8dfe1e75a03ee70f1b2e4a03571b82c1416fa3. 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/4ZYemAsK1HOIIpT1FDwFxV.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/4ZYemAsK1HOIIpT1FDwFxV.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e13276c4dc49ca8ffb97e047d043183835c5fa32819d23b9e36458d172b0e60. 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/52BNoKlkjiBFLTUUWyTOx2.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/52BNoKlkjiBFLTUUWyTOx2.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde655e1b3a39ad54814f26b2a7e9fc4ec423d45e7436189d32d72af1ecce5060. 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/7w2WRQhGV54hTXY9N2g0WH.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/7w2WRQhGV54hTXY9N2g0WH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b60fe1724c560135e4a0a909c19d6931644156528d910469be624bb80ca89b. 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/4UbxAWqfGISWUZfnByJfe5.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/4UbxAWqfGISWUZfnByJfe5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cbf91ef6614a671a1719186331180d97e6a19ea7c0c14544053fb747f3bc07. 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/1x4qTvDjKtfzm4hxTcW9r4.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/1x4qTvDjKtfzm4hxTcW9r4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca63f17392076158629ed5a4111bc0a44822b4c00810a689ffdf85511925a1bb. 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/7El3dLtUb8jfNm4hqG545s.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/7El3dLtUb8jfNm4hqG545s.
{"copyright_id":"0xc3dab6923f7f978170edd36f33799b41edfcd4762678cb1110b4cce298cac682","isrc":"HKC993124753","name":"Missing Days（时光涟漪）","registered_at":"2026-06-11T02:36:03Z","spotify_id":"6q1xPXnuEXhfGnZH0Xvfcz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dab6923f7f978170edd36f33799b41edfcd4762678cb1110b4cce298cac682. 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/6q1xPXnuEXhfGnZH0Xvfcz.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/6q1xPXnuEXhfGnZH0Xvfcz.
Missing Days（时光涟漪） - Instrumental With Harmony Vocals
Missing Days - Instrumental With Harmony Vocals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf087cd0124917994f0c5bfad5666e80559a7e2832908c470a4c5da96f4436a3. 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/5epk1RqwSMZ3Gy8Im6yzXr.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/5epk1RqwSMZ3Gy8Im6yzXr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9886691a0700f0704e8227d861e201c8a4d19678a52e088d4fee3a19d79932. 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/1GUpC1ULxrhXyH0WwwqpSj.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/1GUpC1ULxrhXyH0WwwqpSj.