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 0x34016a1be9cf8ce2959624851c4ca41c9050bdb413fd84933e4ce3ff6ae6b119. 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/d3736479-8053-4f09-a2f4-e4c80caa04b6.json and https://artists.proofprofile.net/proofs/artist/d3736479-8053-4f09-a2f4-e4c80caa04b6.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 0x6b9e93db46ee7a784aa604222254905aea3f603ef85b0a6e86905d8accf21701. 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/1bvf4Jwt1wzn1co4rBoRto.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/1bvf4Jwt1wzn1co4rBoRto.
{"copyright_id":"0x821ce8e0a4ed09abf4497244625edfd84bcc1fea3c9d8dd9eb3d3a4a823c2a25","isrc":"QZDQH2372278","name":"Es De La Pizza \"El 35\"","registered_at":"2026-06-21T18:53:01Z","spotify_id":"2ON3Q9pEYYKqLdPSTU4LSN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821ce8e0a4ed09abf4497244625edfd84bcc1fea3c9d8dd9eb3d3a4a823c2a25. 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/2ON3Q9pEYYKqLdPSTU4LSN.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/2ON3Q9pEYYKqLdPSTU4LSN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92c3406d8b3637f4a25f287a2f7b2c9cebe974d309e559770b0fc010d567aed. 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/07XrZ845gROn9hhx8homwj.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/07XrZ845gROn9hhx8homwj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2685034ca823017c4cba65cfd34b5c7f7cd5dce52b96770e02527c3c338f9b83. 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/61cwok17ufNJ1MDMXssV9B.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/61cwok17ufNJ1MDMXssV9B.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe281d09691ab396e22bb60f9295ad4c5c13557617e24e4e4cb1d18f414b7e9a3. 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/3mj83pdcbTOR0NImXB54Hf.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/3mj83pdcbTOR0NImXB54Hf.
{"copyright_id":"0x8aaf5fc33cd70eed1caa49886df8fefd1b33d36822e584d101f55410a825e17c","isrc":"USANG1907609","name":"Bandera Rusa","registered_at":"2026-06-08T06:15:57Z","spotify_id":"3SRaka2CVJq8XrcDIJrUDc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaf5fc33cd70eed1caa49886df8fefd1b33d36822e584d101f55410a825e17c. 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/3SRaka2CVJq8XrcDIJrUDc.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/3SRaka2CVJq8XrcDIJrUDc.
{"copyright_id":"0x818eead473921e92e91f6d0f0eb31cf93a4f65b26acdb071b1b8b424864b05ad","isrc":"USANG1907616","name":"El 6 De La R","registered_at":"2026-06-26T01:12:57Z","spotify_id":"3U0TvSRI0nljVAkgfhaIkP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818eead473921e92e91f6d0f0eb31cf93a4f65b26acdb071b1b8b424864b05ad. 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/3U0TvSRI0nljVAkgfhaIkP.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/3U0TvSRI0nljVAkgfhaIkP.
Andamos en la Quema, En Vivo Con Tololoche, Vol. 1
Gente de Jalisco el Diecinueve - Con Tololoche
{"copyright_id":"0x50817287e078ab58d0a264375bbab30dcf9048bc15d62153681ca143ea0f8ea8","isrc":"QM4TX1693964","name":"La Vez de las Huertas - En Vivo","registered_at":"2026-06-27T17:47:17Z","spotify_id":"6FcyU0s1Jl0wPxUf3Q2zDN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50817287e078ab58d0a264375bbab30dcf9048bc15d62153681ca143ea0f8ea8. 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/6FcyU0s1Jl0wPxUf3Q2zDN.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/6FcyU0s1Jl0wPxUf3Q2zDN.
{"copyright_id":"0x4f5719b5ccc21d5386a00d1312952fb9be87858d7e26ffba9c01deb6cee9c6b1","isrc":"QZDQH2376840","name":"La Cumbia Del Boca Brava","registered_at":"2026-06-24T22:47:27Z","spotify_id":"2RRwBKWdMeaifqYBcuj8EQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5719b5ccc21d5386a00d1312952fb9be87858d7e26ffba9c01deb6cee9c6b1. 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/2RRwBKWdMeaifqYBcuj8EQ.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/2RRwBKWdMeaifqYBcuj8EQ.
{"copyright_id":"0xd568831739f3fde8fc907ebadde25746fa8d721b61e9aff8c232ba28f80a4afa","isrc":"QZDQH2370644","name":"La Sorpresa","registered_at":"2026-06-08T01:18:56Z","spotify_id":"70ZU5MvOkswmv3nbwW3qEw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd568831739f3fde8fc907ebadde25746fa8d721b61e9aff8c232ba28f80a4afa. 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/70ZU5MvOkswmv3nbwW3qEw.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/70ZU5MvOkswmv3nbwW3qEw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7dda82e7a3e21fba0231608be322b24da2a5d27efff8196ebbbf32095111c4. 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/7MmZi4vAEhHjiUSVxl1oqb.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/7MmZi4vAEhHjiUSVxl1oqb.
{"copyright_id":"0x6eacf9d36a4b9b1d2cdeca34cad545dd92c7b91cb488ea11eaa7192481e50f97","isrc":"QZDQH2361698","name":"El Chiste Es Caer Gordo \"El Pajarito\"","registered_at":"2026-06-26T01:14:50Z","spotify_id":"4URt7pT30FkZT3vXpKdRRz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eacf9d36a4b9b1d2cdeca34cad545dd92c7b91cb488ea11eaa7192481e50f97. 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/4URt7pT30FkZT3vXpKdRRz.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/4URt7pT30FkZT3vXpKdRRz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc06155c46ad0868a223b3e5c3aff34075dab0af5505568e85076b648c23ab70. 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/3r8TOp9opj1T76lbJTrX77.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/3r8TOp9opj1T76lbJTrX77.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703b21d8bde30126630b3d1728d8f76b91fa04bf7e5dcc44e183aad8b885cbb2. 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/0TowU7aELhe3haoFMGMLc6.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/0TowU7aELhe3haoFMGMLc6.
{"copyright_id":"0xf918a1b54d855ddd05297fdae72521ebca176f8cc03d9511c990a116f005789e","isrc":"US7VG2569061","name":"Camisa de las Cu4Tro","registered_at":"2026-06-10T08:01:22Z","spotify_id":"0YCxyCVFhPizIEpMdiUMEU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf918a1b54d855ddd05297fdae72521ebca176f8cc03d9511c990a116f005789e. 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/0YCxyCVFhPizIEpMdiUMEU.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/0YCxyCVFhPizIEpMdiUMEU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d0569a46921e962dec9507a6b058db720c820a5fcc894883c1cb7f3cf5e823. 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/0FeKCYGuj9HHir3YlRIC8G.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/0FeKCYGuj9HHir3YlRIC8G.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa585b9113c5a1131f1c9ff100fc37d7c4154cadf198c85a0a57337d4c72da250. 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/3zt9qFyTKwkf1b5KUHn2Yi.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/3zt9qFyTKwkf1b5KUHn2Yi.