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 0x1d6213efa35c4c59062cb7a1b1d19d0c89e9ed823bcdf19851102611b424f625. 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/c4408f81-981e-431e-adbb-714ce9cb17bb.json and https://artists.proofprofile.net/proofs/artist/c4408f81-981e-431e-adbb-714ce9cb17bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oigfhear a Chuil Duinn (Young Man of the Brown Hair)
Lament for Mr Thomas Grant, of Glen Elgin
Oigfhear A Chuil Duinn (Young Man of the Brown Hair)
Ial, Ial', Ars' a' Chailleach / Bodachan a' Ghàrraidh
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 0x6980ae3a7087e611ee154d48640c264e00d0788e527d07e63309654c9c588505. 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/3Fw6PZwXIDC9XCWQ3bqDOY.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/3Fw6PZwXIDC9XCWQ3bqDOY.
{"copyright_id":"0xd7cb806090a251b2a652df8ad62a503cfdace183fe8729f6f758a6bb9f09559a","isrc":"GBUBC1700007","name":"The Seven Men of Glen Moriston","registered_at":"2026-06-09T10:58:38Z","spotify_id":"6MotjBoYWvT6ESYOjD50ec","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cb806090a251b2a652df8ad62a503cfdace183fe8729f6f758a6bb9f09559a. 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/6MotjBoYWvT6ESYOjD50ec.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/6MotjBoYWvT6ESYOjD50ec.
{"copyright_id":"0x02fc9259ba84d7b4c512b820f9d6e9ce7a2e4494dd4a18e1f9dc4c165d2e7b05","isrc":"GBUBC1700008","name":"Sueno's Stone","registered_at":"2026-06-08T06:14:33Z","spotify_id":"2wcQIuuuNvdJr4FGOfapSD","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fc9259ba84d7b4c512b820f9d6e9ce7a2e4494dd4a18e1f9dc4c165d2e7b05. 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/2wcQIuuuNvdJr4FGOfapSD.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/2wcQIuuuNvdJr4FGOfapSD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa251816d1b86a104240f43c0220c2e5b3561f2d3f0894609991663d7c0e8a06c. 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/2UFt8Vie8FSc2oPhzl5nbW.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/2UFt8Vie8FSc2oPhzl5nbW.
{"copyright_id":"0x0c8a15d35d18ff35acca1fa63a706c23e99c1d8f7afab5c6f9647c984707dafc","isrc":"GBQWZ1200002","name":"The Gordons","registered_at":"2026-06-27T18:34:26Z","spotify_id":"1OYQq9g22bPAzG6fJmj3vc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8a15d35d18ff35acca1fa63a706c23e99c1d8f7afab5c6f9647c984707dafc. 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/1OYQq9g22bPAzG6fJmj3vc.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/1OYQq9g22bPAzG6fJmj3vc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0295e54adc2586038e59468b16ea4c75394b908eaffa53a8ce7e45a34d6ea0. 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/6LULMmq6piXfwg53XjGxfx.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/6LULMmq6piXfwg53XjGxfx.
{"copyright_id":"0x7ea06d0b3332d3e8e65edbd29dd4bde734012e628fca9878ea14e238ed331147","isrc":"GBQWZ1200004","name":"Rise Ye Lazy Fellow","registered_at":"2026-06-08T23:36:09Z","spotify_id":"7CldRC9RI8ZMv4i1FBvBhL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea06d0b3332d3e8e65edbd29dd4bde734012e628fca9878ea14e238ed331147. 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/7CldRC9RI8ZMv4i1FBvBhL.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/7CldRC9RI8ZMv4i1FBvBhL.
{"copyright_id":"0xf2e45f70598e7f7b2fe4c596ddac9676a454319824a05a926ec2796a112ab7c1","isrc":"GBQWZ1200006","name":"Crow Road Croft","registered_at":"2026-06-07T09:46:38Z","spotify_id":"2qMsxrhfzy7jrLgfUgvXfO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e45f70598e7f7b2fe4c596ddac9676a454319824a05a926ec2796a112ab7c1. 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/2qMsxrhfzy7jrLgfUgvXfO.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/2qMsxrhfzy7jrLgfUgvXfO.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7acd0cc62b7637b470a50b884e37bb764cdd8bce08879f39ef4ab5cedd5d316. 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/3rhD4bWGxEE69TUtgwg4ou.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/3rhD4bWGxEE69TUtgwg4ou.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf447136b4671e3d229f5f9e6cb3d01c4d65ceb0e0482f3cea964ec9cf12b0b93. 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/3SsK0PR3iDmmel1MtFs9NI.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/3SsK0PR3iDmmel1MtFs9NI.
{"copyright_id":"0x625c51e48a5df058f7141979aa855ff3bf815dcbfb020c06f221e26579202a51","isrc":"GBQWZ1200010","name":"A Highland Lamentation","registered_at":"2026-06-09T11:00:37Z","spotify_id":"4aYr1oAV79GsYjqoYQgfX1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625c51e48a5df058f7141979aa855ff3bf815dcbfb020c06f221e26579202a51. 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/4aYr1oAV79GsYjqoYQgfX1.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/4aYr1oAV79GsYjqoYQgfX1.