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 0x0aff91e8fabd0e41715e97fbc843339139f110a79de74d3ad413ec9b05bca336. 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/a557f354-2c0e-40ec-b118-2203e2ff938b.json and https://artists.proofprofile.net/proofs/artist/a557f354-2c0e-40ec-b118-2203e2ff938b.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 0xd1d998c9bd16d12343e27f1e887aef7b46b903385f4bbb08afb32a19ce052a36. 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/6unf1NoxPvL2Ej5G2ljD9b.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/6unf1NoxPvL2Ej5G2ljD9b.
{"copyright_id":"0xb839ea583d114e8ed4f8e7901facd25fb301ed5ab7a3a3ec1116f6985c2a4d4c","isrc":"QZTAU2112357","name":"PRESSURE GAUGE","registered_at":"2026-06-04T03:41:13Z","spotify_id":"4AhWMQGlc2UAAqxd7aaYeo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb839ea583d114e8ed4f8e7901facd25fb301ed5ab7a3a3ec1116f6985c2a4d4c. 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/4AhWMQGlc2UAAqxd7aaYeo.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/4AhWMQGlc2UAAqxd7aaYeo.
{"copyright_id":"0x5ab55d720f2891cc50d47235618fe41703bffc630ae3bdbcdc765caa39bc5ee6","isrc":"QZTAU2112358","name":"RUN THE WALL","registered_at":"2026-06-04T09:48:45Z","spotify_id":"3Lgxy8KEmtyNXlsq1Usz8I","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab55d720f2891cc50d47235618fe41703bffc630ae3bdbcdc765caa39bc5ee6. 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/3Lgxy8KEmtyNXlsq1Usz8I.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/3Lgxy8KEmtyNXlsq1Usz8I.
{"copyright_id":"0x5803d9ec65e925a013effc333f0a91dafb2d41adf831dc4b735908b28afe1244","isrc":"QZTAU2112359","name":"TOP DEAD CENTER","registered_at":"2026-06-02T02:31:39Z","spotify_id":"2iBSQ45DFXrUPBRXs0jUuW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5803d9ec65e925a013effc333f0a91dafb2d41adf831dc4b735908b28afe1244. 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/2iBSQ45DFXrUPBRXs0jUuW.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/2iBSQ45DFXrUPBRXs0jUuW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3899c4f048d32476bf8682f8d8cbb068a62961c0d6aa6502b207becdc0cf96. 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/1tbpbtSsEpL5EQ9HpgW8zl.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/1tbpbtSsEpL5EQ9HpgW8zl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7a82c18ca9bb63db636e6319fc96853a296e5ef12e0930a9645d3db746dc0d. 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/60C1obPe6QNZT2HqQiuR5K.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/60C1obPe6QNZT2HqQiuR5K.
{"copyright_id":"0xd1ec30217ce189a2f800f903f3d278e0b568defd6bd3f5d0aa3f61e0801ba140","isrc":"USUYG1346400","name":"HOLD STEADY","registered_at":"2026-06-08T10:09:09Z","spotify_id":"5dWyIMaCqY62I0fqm2CRgL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ec30217ce189a2f800f903f3d278e0b568defd6bd3f5d0aa3f61e0801ba140. 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/5dWyIMaCqY62I0fqm2CRgL.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/5dWyIMaCqY62I0fqm2CRgL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09a6334afd455619a5c9e955b534b664d7701f6aee1944d880df0f007e88739. 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/767zniS0K5iKXmvL4iAaCm.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/767zniS0K5iKXmvL4iAaCm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5957f85ba42d56ac361a9d169b6111d64efd4177cacb58fa2e26b92947229598. 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/7w094UpXoVd4n539TFrnhv.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/7w094UpXoVd4n539TFrnhv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b116f6fffbd085b2bc8f274739b9979b570dc56367bd0a2b33b97b6e0c0799. 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/7oIbvBaQgYmQUmeoXALBlV.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/7oIbvBaQgYmQUmeoXALBlV.
{"copyright_id":"0xacc664f24f2c270d8d01f2957789b07a8446e0d83b102002c930b0e4faaba7f1","isrc":"USUYG1346404","name":"CRASH COURSE","registered_at":"2026-06-11T14:10:01Z","spotify_id":"1EkJAjSSkBwyNkrCSHiO97","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc664f24f2c270d8d01f2957789b07a8446e0d83b102002c930b0e4faaba7f1. 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/1EkJAjSSkBwyNkrCSHiO97.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/1EkJAjSSkBwyNkrCSHiO97.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b8c2f144466ad89c1acffec7f3f81f457ca0744298706c6b09b831b4344aec. 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/1tReIRmbsLPONdt9Vb7aFJ.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/1tReIRmbsLPONdt9Vb7aFJ.
{"copyright_id":"0x8408628cb9086b37462eb0e5d45fd9df02fa69f4ea3865ce142a435c42d2f88c","isrc":"USUYG1346406","name":"CHECK FOR THE CHECK","registered_at":"2026-06-08T13:46:11Z","spotify_id":"4nyVXdO6QjjvzX4g8YFLx8","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8408628cb9086b37462eb0e5d45fd9df02fa69f4ea3865ce142a435c42d2f88c. 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/4nyVXdO6QjjvzX4g8YFLx8.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/4nyVXdO6QjjvzX4g8YFLx8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61baf7ba7c09f67073a0deb863b9d4ae922d897d62ad22fa2fbe2bb249422f73. 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/2PmLL7snW2L1HSZEVjMkfU.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/2PmLL7snW2L1HSZEVjMkfU.
{"copyright_id":"0x16fb568360ab5dcbe73a10f841ceeacd5a79c67a66d3cfed2b83acc216d91cc3","isrc":"USUYG1346408","name":"CUPZ UP","registered_at":"2026-06-10T14:34:44Z","spotify_id":"7hRWBraS9HHrHK8E9iPDhq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fb568360ab5dcbe73a10f841ceeacd5a79c67a66d3cfed2b83acc216d91cc3. 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/7hRWBraS9HHrHK8E9iPDhq.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/7hRWBraS9HHrHK8E9iPDhq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd699e3cfe1744d6e2a9209a474423c7c5644157cb36cc319c6701af79a8cb2c0. 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/5Yo695mCwJBKgm6hFlZ79E.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/5Yo695mCwJBKgm6hFlZ79E.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc794a1bf88c369397e6db59a878f2f08ac6fa94d92da75edc6b7824d1841619a. 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/5DXSOg9hG4ELijkXzUAo3B.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/5DXSOg9hG4ELijkXzUAo3B.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0da5580f6db0235b578bb054ead57d11ff755007c5b90c2b87ab85b66445d5. 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/4jjPPxzqGBP1ZDlKeG76XL.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/4jjPPxzqGBP1ZDlKeG76XL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa910dbf01fc301faac55d739f1a0bcc323c123eef722e897050ee4972267ef06. 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/0YGswODGW7YsL22dE0ObKu.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/0YGswODGW7YsL22dE0ObKu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a72155f10be6aa8c621d397542e77ab67480e955a8553c455a7c05a9f7b9f1d. 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/39aMUm2VbOA4XCAEsF4v5b.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/39aMUm2VbOA4XCAEsF4v5b.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965af61eacd8df3511610cbe03c9ba0f5898e6655861e8e50ce84a4f2f89a8a4. 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/0lSKo9fdYoI8t089mlj8TS.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/0lSKo9fdYoI8t089mlj8TS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0e945888ac9da2d02973dc0bfe4a23016a454ba650a9c14aa0e70ae5735478. 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/38spK6vXKkzdg0fZwpUEDs.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/38spK6vXKkzdg0fZwpUEDs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546558556a5fcd64d02183f3907081d7cf6be95e90452f3448dbfe7c120ba2f7. 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/3JkPkvZ5vQijmxXXK9isbe.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/3JkPkvZ5vQijmxXXK9isbe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965af61eacd8df3511610cbe03c9ba0f5898e6655861e8e50ce84a4f2f89a8a4. 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/1ZFecaMOFCfDMKD6GYTD58.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/1ZFecaMOFCfDMKD6GYTD58.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4dead781a98fb6e9ad60143b3d1731fe811271b147fe4ce129236491be2b34. 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/1J6k3kRny3AiUP73O4JyyA.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/1J6k3kRny3AiUP73O4JyyA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2d61652a18c0db3870201dcda034cdaa100ee1a2b702ce828407506a4ae74a. 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/3Wi2Ah121WrtCiU8Lir8St.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/3Wi2Ah121WrtCiU8Lir8St.
{"copyright_id":"0x9d24d5bf8e50a1fb39e62e5e51244e4813770020e9291f50b93cd1c9e36bc6ce","isrc":"TCAFQ2174504","name":"Forever Active","registered_at":"2026-06-22T10:39:58Z","spotify_id":"0wPQ5tapcRwhrVwkrK8ec7","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d24d5bf8e50a1fb39e62e5e51244e4813770020e9291f50b93cd1c9e36bc6ce. 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/0wPQ5tapcRwhrVwkrK8ec7.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/0wPQ5tapcRwhrVwkrK8ec7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cb008637244b153f38bfe257c1cf0f541f5e1552c94532b04230a026fc1e53. 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/4yt1zGnTiXxkoJnrb8ZABa.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/4yt1zGnTiXxkoJnrb8ZABa.
{"copyright_id":"0x550cfbedcf0d168e8a04577ff69f12d63ebd10032e704db1a5dac04403a70c7f","isrc":"TCAFB2077356","name":"TROPHY BOYZ","registered_at":"2026-06-21T18:39:42Z","spotify_id":"5BauOlFLPUaB6LLVRIvdWs","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550cfbedcf0d168e8a04577ff69f12d63ebd10032e704db1a5dac04403a70c7f. 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/5BauOlFLPUaB6LLVRIvdWs.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/5BauOlFLPUaB6LLVRIvdWs.