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 0xf56344534e1e0340e5d8ccb74b926865ef30477d46d79041f6a606073ec8ea8d. 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/9d158428-581d-4475-a321-c160a0c85cfa.json and https://artists.proofprofile.net/proofs/artist/9d158428-581d-4475-a321-c160a0c85cfa.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 0x8db04cd3d333124141f422861f3455b7636ed27b4e69fe9f10b9f27e83f41158. 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/1AZEKyJQKVucfisCqKO1Nk.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/1AZEKyJQKVucfisCqKO1Nk.
{"copyright_id":"0x6478f344962a59c1e1f8daba5418e50dfcab2fe623afd3f3013605ec2aa6d5a3","isrc":"QZRD92303081","name":"Wrecking Ball","registered_at":"2026-06-04T07:54:44Z","spotify_id":"1Fl4vSE3PegDGtkNL7JXNl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6478f344962a59c1e1f8daba5418e50dfcab2fe623afd3f3013605ec2aa6d5a3. 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/1Fl4vSE3PegDGtkNL7JXNl.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/1Fl4vSE3PegDGtkNL7JXNl.
{"copyright_id":"0xe429d814eada64f1d5cb2f4435c2abc07e91e2cf7ecad5b6cce8fdf3efc54fb5","isrc":"USNPW2400758","name":"Powerful Women","registered_at":"2026-06-02T01:41:00Z","spotify_id":"043trFU53vB0CBmFszufZd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe429d814eada64f1d5cb2f4435c2abc07e91e2cf7ecad5b6cce8fdf3efc54fb5. 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/043trFU53vB0CBmFszufZd.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/043trFU53vB0CBmFszufZd.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1e74940615c9da8e1e9623948cf5c9a13947322d485689d157cf81b40c52f3. 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/6XzM8wBEznCteSOdeHMyTE.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/6XzM8wBEznCteSOdeHMyTE.
Faith (with Dolly Parton) [feat. Mr. Probz]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b6d2e43f787dfbe45395e3e173c4e676854bccc4568e049bcd611adef55515. 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/4w3tQBXhn5345eUXDGBWZG.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/4w3tQBXhn5345eUXDGBWZG.
Please Please Please (feat. Dolly Parton)
{"copyright_id":"0x14d3e104b8d0f18deb16d81bfbb7ca619f1b866fc8104331aeb84fa46f65690b","isrc":"USUM72413905","name":"Please Please Please (feat. Dolly Parton)","registered_at":"2026-06-01T05:04:23Z","spotify_id":"6nrSo5ZWhsai0oeX257rRF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d3e104b8d0f18deb16d81bfbb7ca619f1b866fc8104331aeb84fa46f65690b. 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/6nrSo5ZWhsai0oeX257rRF.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/6nrSo5ZWhsai0oeX257rRF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57f71bde47b4e6940a6697d41f8373924ab0eb469b7c262651e9d55239f09b3. 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/5mUlozUYpdmXVPkj4BW8cA.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/5mUlozUYpdmXVPkj4BW8cA.
{"copyright_id":"0xfc757b730c249af3916ea5edb14e34cd3a00e28d9085ecd49e2eac8f018aa1bd","isrc":"USAT21904751","name":"Faith (with Dolly Parton) [feat. Mr. Probz]","registered_at":"2026-06-04T06:51:57Z","spotify_id":"6o6STE55cbhH4BuM2EJRL9","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc757b730c249af3916ea5edb14e34cd3a00e28d9085ecd49e2eac8f018aa1bd. 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/6o6STE55cbhH4BuM2EJRL9.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/6o6STE55cbhH4BuM2EJRL9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db04cd3d333124141f422861f3455b7636ed27b4e69fe9f10b9f27e83f41158. 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/0QniqyO4C5JdxALPM4rulH.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/0QniqyO4C5JdxALPM4rulH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dd4b943cc3eaabad34b7c2e28e57c4bc0a138f6aece5a8a7665d645f7e43be. 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/3PUrao7xB9jYq31eKVjrV6.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/3PUrao7xB9jYq31eKVjrV6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b115fd82f93163089ec415a356ab5c426f16e6e26fdb63bb8fbfff22bc90ff. 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/6sbqpXpDBb6MNv93lhqKvl.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/6sbqpXpDBb6MNv93lhqKvl.
{"copyright_id":"0x0792d5a9aa295014661008b659bae843cd56c06619052fddcbb87a2708605e87","isrc":"USRC11702045","name":"Rainbowland (feat. Dolly Parton)","registered_at":"2026-06-04T15:28:08Z","spotify_id":"6fdVBAXMxv5vAABQCpOtI5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0792d5a9aa295014661008b659bae843cd56c06619052fddcbb87a2708605e87. 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/6fdVBAXMxv5vAABQCpOtI5.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/6fdVBAXMxv5vAABQCpOtI5.
Glen Campbell Duets: Ghost On The Canvas Sessions
{"copyright_id":"0x367817b66d69e19d4863d18b4882ee4a022060abf9abdb769d5aa9b60363b75d","isrc":"USSFR2411020","name":"A Better Place (with Dolly Parton)","registered_at":"2026-06-17T22:44:32Z","spotify_id":"0YCzc9CQkXubeYtLLLAJYK","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367817b66d69e19d4863d18b4882ee4a022060abf9abdb769d5aa9b60363b75d. 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/0YCzc9CQkXubeYtLLLAJYK.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/0YCzc9CQkXubeYtLLLAJYK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40564a109d553af5d6949707be77db42de4f808f794436cb731562acfddce46e. 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/5e54PH35kWKsLlg7EwxaH5.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/5e54PH35kWKsLlg7EwxaH5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f070a5ebaf2ed54df309c7783809bd3911531516ef6c7250d21662ca8699227. 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/3StSWHZv500RhvY7cAKzKe.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/3StSWHZv500RhvY7cAKzKe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccd8583384b59199e2293f847d6d21a73c33c74fe19fe85bcdc8528d733925f. 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/48pyG4Fg15OHEWaV2sOPfu.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/48pyG4Fg15OHEWaV2sOPfu.
{"copyright_id":"0xd3dd4b943cc3eaabad34b7c2e28e57c4bc0a138f6aece5a8a7665d645f7e43be","isrc":"USRN19600170","name":"9 to 5","registered_at":"2026-06-05T11:41:49Z","spotify_id":"5ZEongEcTXkNuIxnxkT69q","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dd4b943cc3eaabad34b7c2e28e57c4bc0a138f6aece5a8a7665d645f7e43be. 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/5ZEongEcTXkNuIxnxkT69q.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/5ZEongEcTXkNuIxnxkT69q.
Light of a Clear Blue Morning (Arr. Johnson)
A Company of Voices: Conspirare in Concert
{"copyright_id":"0xf5c827ae7bc81b592911a9ba52b25c80f980cfa2500e7068bd00740b743f7bb1","isrc":"USHM10853406","name":"Light of a Clear Blue Morning (Arr. Johnson)","registered_at":"2026-06-17T22:46:59Z","spotify_id":"778RcVGF7PYT7r3AwRTTZC","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c827ae7bc81b592911a9ba52b25c80f980cfa2500e7068bd00740b743f7bb1. 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/778RcVGF7PYT7r3AwRTTZC.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/778RcVGF7PYT7r3AwRTTZC.
{"copyright_id":"0x762b11978961dbf224cf3e07f7469d0de37b85b7f53dc5291bdba8d2f8adc58d","isrc":"USRC18307961","name":"Islands In the Stream","registered_at":"2026-06-19T07:52:37Z","spotify_id":"5U08ccl4Kkq7x48BC2mHcH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762b11978961dbf224cf3e07f7469d0de37b85b7f53dc5291bdba8d2f8adc58d. 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/5U08ccl4Kkq7x48BC2mHcH.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/5U08ccl4Kkq7x48BC2mHcH.