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 0x1eb5c141885ec3bb566e7c74f40ef03d7107a27f8b33b4aaccbdf535371c9ad0. 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/bcf5f0a5-fbb9-49ba-a9e9-3f779ab6602e.json and https://artists.proofprofile.net/proofs/artist/bcf5f0a5-fbb9-49ba-a9e9-3f779ab6602e.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 0x330092433cc05eceebd16492e6758f74d7773eb50764db997abe8387ab331f24. 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/4ykXVIVKVtuaqhRh3RKNHD.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/4ykXVIVKVtuaqhRh3RKNHD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24cc725af6985b2b2377769a72587c4be68b0c314e70aa23dc765344ee2a002. 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/1905loqmX0pSFPMbA9rc1f.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/1905loqmX0pSFPMbA9rc1f.
{"copyright_id":"0xe53df673fb8c5fabc1f50b6491ca335745a6add7aa0fd1889c55100ea29456b6","isrc":"QZNWV2157694","name":"Al corte","registered_at":"2026-06-29T04:43:34Z","spotify_id":"0t8pKdviwM4WCNiMH6ZWUx","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53df673fb8c5fabc1f50b6491ca335745a6add7aa0fd1889c55100ea29456b6. 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/0t8pKdviwM4WCNiMH6ZWUx.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/0t8pKdviwM4WCNiMH6ZWUx.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e25e5266d339d7e76bb99a83a11230efa68d83d03987785c91835db6a2b27a7. 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/6QGNvPtmNoPDpnzdw45FTS.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/6QGNvPtmNoPDpnzdw45FTS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdd520d690791628e117f3fc2b81d0411252b398cf386e51a3fd7630e2f9546. 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/43LYVil5JvuBvKn7AYq8lO.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/43LYVil5JvuBvKn7AYq8lO.
{"copyright_id":"0xfa96be53243c75d9f8cdb621749c689b59abca49be10b7e944e735fad87ba7db","isrc":"ARQRD2400024","name":"ANDO DE LA PALA","registered_at":"2026-06-04T09:55:15Z","spotify_id":"4ui0WX3BQEk89HcAQzRsbB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa96be53243c75d9f8cdb621749c689b59abca49be10b7e944e735fad87ba7db. 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/4ui0WX3BQEk89HcAQzRsbB.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/4ui0WX3BQEk89HcAQzRsbB.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e396a9b978d313d6e5158d0c2e5324430a1c18c3838e72700048fb0dd071d71. 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/2oRtw6ckT99Xz0osS4MTm8.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/2oRtw6ckT99Xz0osS4MTm8.
{"copyright_id":"0xef0da0069d20c7a60ad2a44c6046135a8110ce7403ff6b35da3084cf703e4c77","isrc":"QZW9K2337909","name":"Matando la Liga","registered_at":"2026-06-09T08:17:54Z","spotify_id":"3ivjXorSvJ9sBkqndoPM0B","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0da0069d20c7a60ad2a44c6046135a8110ce7403ff6b35da3084cf703e4c77. 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/3ivjXorSvJ9sBkqndoPM0B.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/3ivjXorSvJ9sBkqndoPM0B.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6758949f2c447baebad07b0f64a2a17cc5ddaa7e44567cb06029bdfa1111365f. 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/75ShCUU5RS4NE8allIpJPa.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/75ShCUU5RS4NE8allIpJPa.
PONTE PERRO | DJ TAO Turreo Sessions #24
{"copyright_id":"0x2d37fc298cad7539d68ddae112a13be325a59d93b7a90d144ad1f0a10bcf98c7","isrc":"CLAA22400421","name":"PONTE PERRO | Mission 22","registered_at":"2026-06-04T09:46:48Z","spotify_id":"3IONa7nPD5WXVVfAYs08HK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d37fc298cad7539d68ddae112a13be325a59d93b7a90d144ad1f0a10bcf98c7. 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/3IONa7nPD5WXVVfAYs08HK.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/3IONa7nPD5WXVVfAYs08HK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc294c1527e179de9ecd2ce22276125ca957acb6c840b69d2690e4269908bd417. 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/31Njdd4MbcsNm5kEBylagD.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/31Njdd4MbcsNm5kEBylagD.
{"copyright_id":"0xdc87e92ec8bfa404db118054cd0496ed0fab3489dc663b0633d54f0a30cbd38a","isrc":"AR5UH2302594","name":"Vida Mala","registered_at":"2026-06-05T05:48:32Z","spotify_id":"3JyFEEnWFLTtTwDLgvQcr3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc87e92ec8bfa404db118054cd0496ed0fab3489dc663b0633d54f0a30cbd38a. 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/3JyFEEnWFLTtTwDLgvQcr3.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/3JyFEEnWFLTtTwDLgvQcr3.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374a5423b2655c963dc04f78edb00b2b027b671133e2f6f3e10fc26d6b275abb. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:27:23Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1THzEhcnjAC02IDn4WN61o.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/1THzEhcnjAC02IDn4WN61o.