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 0x0bb20fd1af0ead53100a283c0aaaff694bf2347fc9f27be8f36d05b191b73478. 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/6b57c447-c546-44cf-a70c-71dbb5cdc988.json and https://artists.proofprofile.net/proofs/artist/6b57c447-c546-44cf-a70c-71dbb5cdc988.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 0x9d181b8a08e5f022e507a3b7dee4cf960654d1daa635e0b51d71470e5138bb53. 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/7eozREA8R8aKIoay9JncKE.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/7eozREA8R8aKIoay9JncKE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a25516bf3622f786c8a34d4a38c29c8cbe37c8d36a25a4fc619979d642002a3. 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/1DHv7jPkJs8E1to48k31YM.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/1DHv7jPkJs8E1to48k31YM.
{"copyright_id":"0x603a6744c2d9b5b4b8f1fcad4ca0c174eba0bae80e09c5e4efa9b0290c9655d5","isrc":"ES71G1841578","name":"Sextape - Feat. Lil Moss","registered_at":"2026-06-08T12:31:05Z","spotify_id":"3NhtwPqZynJPKQ7tz77Oyo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603a6744c2d9b5b4b8f1fcad4ca0c174eba0bae80e09c5e4efa9b0290c9655d5. 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/3NhtwPqZynJPKQ7tz77Oyo.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/3NhtwPqZynJPKQ7tz77Oyo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659a1531a3df28f6b776fa0de73488c3a322fbb552b7acee5244d18e4453755f. 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/6zOOVm4S43oW4s8uNLwbrv.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/6zOOVm4S43oW4s8uNLwbrv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f9ae7cbcdd96a6e8214ae9e74dedb6a2bb4f41b247d968a83d2a9e22998825. 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/16nZPEirCGNqYLTGV1lysz.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/16nZPEirCGNqYLTGV1lysz.
{"copyright_id":"0xc207acbd8bddaae02b37b27ecfba8ff2047fe8b1070f0b5dd7064047c480aa94","isrc":"QZNWZ2150357","name":"Club Bªbylon (Miªmi) (feat. Kid Bali)","registered_at":"2026-06-19T11:34:34Z","spotify_id":"3BW2WuO2pLUOlixXQqm7RH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc207acbd8bddaae02b37b27ecfba8ff2047fe8b1070f0b5dd7064047c480aa94. 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/3BW2WuO2pLUOlixXQqm7RH.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/3BW2WuO2pLUOlixXQqm7RH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a18c4d8a6e66598f17dcbb35395f6b31d0bc3374c16a5535a16f39b8c1f0994. 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/2zZ9vv7W3hmCAKY1uxbUMU.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/2zZ9vv7W3hmCAKY1uxbUMU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b655b61ce71f8058e38f2cdbeb24f6fc30b8af222c4007f54c1e7156577bc7f. 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/5OW5CtOTzEdRUteODu3JOQ.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/5OW5CtOTzEdRUteODu3JOQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04e1b405b6717e5226e54d5a0dcbb12b26e0e8d2d1069be8c450d950cf82a2c. 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/1CheSf7Hbr43vmhTN7919z.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/1CheSf7Hbr43vmhTN7919z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60e59740f4292caa3b274c17d31f2249957b601c452eef7a3b24fd2241d67d3. 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/21PR1sZDTZ6M7UaQf8I9LQ.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/21PR1sZDTZ6M7UaQf8I9LQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c4711759bd4422370415097c471227b31e36fe2703c8c1f919e4293008beb8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1uGpjMlL0O94jRpjqeSNYm.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/1uGpjMlL0O94jRpjqeSNYm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42d191374d202a3ef47148f99b7c9d68a6233c8fde29478b08f579a539afaa3. 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/0W3x0dKlNvSUkfOxaFMlHZ.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/0W3x0dKlNvSUkfOxaFMlHZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1965c492ed92bb0d205cb21481dcbc5c4473aed91788d0ca45fa987ed2488c02. 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/7IIix3SfvkjxsxKZdlgvTG.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/7IIix3SfvkjxsxKZdlgvTG.
{"copyright_id":"0x6d60e97f92e8ad46d672d08f84cf1ec0e2dbd718341a6264b0f0fd791fcac073","isrc":"ES18B1901114","name":"Si Tu No Me Quieres","registered_at":"2026-06-25T21:32:37Z","spotify_id":"0WOb8E4sKKYi6bpIUfdBQ0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d60e97f92e8ad46d672d08f84cf1ec0e2dbd718341a6264b0f0fd791fcac073. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0WOb8E4sKKYi6bpIUfdBQ0.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/0WOb8E4sKKYi6bpIUfdBQ0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957fc24853b7fd6b56b42a91e08aae35d32824cab76a1c1ff3c39eb9550817f6. 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/52R1V7KyzJ1LnXtiDIrlr5.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/52R1V7KyzJ1LnXtiDIrlr5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9815c09a0260769fc5ba517fd71be8621ae978022730bf12393b165f002da147. 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/0c0mGJd0ZEOVvFsmpwS1iI.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/0c0mGJd0ZEOVvFsmpwS1iI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4030221833385d3c2bbc0981d75000ce5aa86f7bc371664f5dc9c5d0c4be346. 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/1FBA7GbWxM2KhP4WeIfejN.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/1FBA7GbWxM2KhP4WeIfejN.
{"copyright_id":"0x8ccb17f8a3dba582165af654c27c3f68aca1f93be01f0a8dc63838a75e5ea68c","isrc":"ES18B1901119","name":"Vacilandoles de Ella","registered_at":"2026-06-25T21:30:20Z","spotify_id":"3CzTWHV7swqIpOrdYSiHPE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccb17f8a3dba582165af654c27c3f68aca1f93be01f0a8dc63838a75e5ea68c. 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/3CzTWHV7swqIpOrdYSiHPE.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/3CzTWHV7swqIpOrdYSiHPE.