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 0x086ff5b8e05ef61d25adf48d03480535ddaeb1595481ee61adaecbc58f27427b. 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/3b58a363-5e30-4fef-9911-3d93865918de.json and https://artists.proofprofile.net/proofs/artist/3b58a363-5e30-4fef-9911-3d93865918de.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 0x6c78ac023f2c0b36176db8c54c08e837778c6c8b8735d02dcf9c0cdb0309141d. 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/6r3q5lpmkdzC2cmIBsCrzU.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/6r3q5lpmkdzC2cmIBsCrzU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ca98ed38b0cb829d3aa54e63167a2c6e5ebd5b272c40d755f74c607a4d774d. 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/21vFXhM6whAImWe4p8WwOp.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/21vFXhM6whAImWe4p8WwOp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050fb349633606fcfc9570bfad70f6f586dc38242a996b781afdc9291adbe456. 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/4i40VEEe3DbJh2xrX37GcN.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/4i40VEEe3DbJh2xrX37GcN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b40f9954c85c431da1ad8d9850cfeb0c0b001761de0a04b701f10a37adb77a. 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/2Qr1ab1lMviBP9VRLeyytv.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/2Qr1ab1lMviBP9VRLeyytv.
{"copyright_id":"0xf7900307c8c251bbcca225af3f5f5bfb456cc8d5e1b986e96737e7129a4cb063","isrc":"QM3DF2145263","name":"Y Aqui Estoy","registered_at":"2026-06-18T18:14:30Z","spotify_id":"0FxgUGsRpUxyVeORoqJdwF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7900307c8c251bbcca225af3f5f5bfb456cc8d5e1b986e96737e7129a4cb063. 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/0FxgUGsRpUxyVeORoqJdwF.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/0FxgUGsRpUxyVeORoqJdwF.
{"copyright_id":"0xbeeb01a2c98df1fc640013fa8d1ed4497d7e881e1411e4ddaae37dfdd9ffad40","isrc":"QM3DF2145264","name":"Seguido Me Desvelo","registered_at":"2026-06-22T04:53:10Z","spotify_id":"2HAckiEWZUKOza5PnpTJhG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeeb01a2c98df1fc640013fa8d1ed4497d7e881e1411e4ddaae37dfdd9ffad40. 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/2HAckiEWZUKOza5PnpTJhG.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/2HAckiEWZUKOza5PnpTJhG.
{"copyright_id":"0xab93fa5dbcdf8a8ed4e723a7593c6bdadb97782e9f96cab2c84294872405beb1","isrc":"QM3DF2145266","name":"Con Calma","registered_at":"2026-06-19T14:07:36Z","spotify_id":"15DzJwrSuJ3tJYte8dPJoF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab93fa5dbcdf8a8ed4e723a7593c6bdadb97782e9f96cab2c84294872405beb1. 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/15DzJwrSuJ3tJYte8dPJoF.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/15DzJwrSuJ3tJYte8dPJoF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157e454532ee474f5700b65ed138b5e97ece38ebd5f859421b07940b22a5e78f. 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/0qbYPK1wot1QnPdCfNxwYA.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/0qbYPK1wot1QnPdCfNxwYA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a4b171208130b73aba291af23a94a871a308593c615842ed7b5d83db9ba1c3. 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/4O3BHgmOHaUeXExdIPcLVe.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/4O3BHgmOHaUeXExdIPcLVe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173b8e87956da50164c9961b33cda27c173483bfaf924255db0285737511c8ae. 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/4gekK3yWG4S9StLlskzAHw.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/4gekK3yWG4S9StLlskzAHw.
{"copyright_id":"0x5b27c74bd7880fe9ae8e6010cbb7243a4abda054bac6e765b25f2fe1423b6ca5","isrc":"QM3DF2145271","name":"Rios Bravos","registered_at":"2026-06-24T16:45:22Z","spotify_id":"1g0sZRfrX2QwvZmnkLJgnA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b27c74bd7880fe9ae8e6010cbb7243a4abda054bac6e765b25f2fe1423b6ca5. 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/1g0sZRfrX2QwvZmnkLJgnA.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/1g0sZRfrX2QwvZmnkLJgnA.
{"copyright_id":"0xf4ac2787e9ecd8f652bf05f6221cb1ca6067831b3265075b7651625803cf68de","isrc":"QM3DF2145272","name":"Pistoleros Del Centro","registered_at":"2026-06-21T18:28:38Z","spotify_id":"6KEr0GouVZlxvaZ0vmBI7w","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ac2787e9ecd8f652bf05f6221cb1ca6067831b3265075b7651625803cf68de. 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/6KEr0GouVZlxvaZ0vmBI7w.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/6KEr0GouVZlxvaZ0vmBI7w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc25238c3bf0532de8dec8ef779a18fbfbd261481d8d0b92839001005e9f81d0. 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/5y4zeDsnb7EnIrS4G8pteX.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/5y4zeDsnb7EnIrS4G8pteX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3758161696e846848580709bcd88cfec05e39a67337df7a2c9616d26c507bc71. 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/2k2jFERJRWsBxiwNSExVVh.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/2k2jFERJRWsBxiwNSExVVh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47201b7e77e5527ae9e05af1135b33769212ca01be577e08d0f7f3459decc1a. 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/1kQhXnFJLhMnwT8JXnv4Up.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/1kQhXnFJLhMnwT8JXnv4Up.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6a6b763ffa0e8b872b7012467170d5f741258e94108a1a0e16182f7493c07f. 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/2giu0cbtVW1orXSbEMlRgm.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/2giu0cbtVW1orXSbEMlRgm.
{"copyright_id":"0x47a31de686c11ad2c555f76e076ce86998bcd2e22d9030a6743e87fcc492ad23","isrc":"QM3DF2145277","name":"Reyna De Mi Castillo (LIVE)","registered_at":"2026-06-19T14:08:41Z","spotify_id":"7eqZsrabMC9KTOrvnfwibp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a31de686c11ad2c555f76e076ce86998bcd2e22d9030a6743e87fcc492ad23. 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/7eqZsrabMC9KTOrvnfwibp.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/7eqZsrabMC9KTOrvnfwibp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462e3978686a93fb59b17a3bd66ec53e5a1f09d7b692828d65e3c3202ff9bd55. 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/6cAIipRtCMZ6mzQQPPPsMb.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/6cAIipRtCMZ6mzQQPPPsMb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e3787ae3d679852fa1dd06b180110f7b87cdf95d6ceb1397d0631d8c05b988. 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/3GExEEiq2VjI48n30tZb9Q.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/3GExEEiq2VjI48n30tZb9Q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96f6ed18bf5fcbe68dd850aaa43190898d019a75d9d239e05097db0735d5eb7. 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/64LyZmq9ovBu6GrDOhtf2m.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/64LyZmq9ovBu6GrDOhtf2m.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1253551115f17786442517b5d2c806661e4328de4bb0db34c7ebf35c094eeb3. 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/3EEt0tvqTrW0y8bhGtH321.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/3EEt0tvqTrW0y8bhGtH321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7263f0c3c2253b8324248cf5f3305e0341d518be996380eb297723182db4bc1a. 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/6aQgAhpCebGWOqrMdY2VhP.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/6aQgAhpCebGWOqrMdY2VhP.
{"copyright_id":"0xbca5bbdd5637a912b1d254e9ecd8c3b22315b724acc778d82a531f9f16f1322f","isrc":"USANG2192099","name":"Esto Avanza","registered_at":"2026-06-05T05:09:42Z","spotify_id":"252orSHU0AqE7TKvUaEWTh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca5bbdd5637a912b1d254e9ecd8c3b22315b724acc778d82a531f9f16f1322f. 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/252orSHU0AqE7TKvUaEWTh.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/252orSHU0AqE7TKvUaEWTh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd4deeac39602ea5a785570cf96a9c17c9d1257cb4ea5e3d8d312c850241429. 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/00e7R21236OX75ACaT8HH0.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/00e7R21236OX75ACaT8HH0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8537837c64cd3af52a34f2708d3f288d95096f27fe6602eae2a870692e0f1456. 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/3r9WCxHvUoyibVjLy3TJmL.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/3r9WCxHvUoyibVjLy3TJmL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1511822d469d9f13cfec37e65e799626250707e729206fd421ed81d7ecdd235f. 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/6IPni1a6mvyZrG1JR7Au22.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/6IPni1a6mvyZrG1JR7Au22.