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 0x0219da40fcd89894cb3881d6cc6839a8a54afb3b7421bf6b0e66882022e877e1. 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/e229893d-9124-48a0-8e1c-7bc2378765b4.json and https://artists.proofprofile.net/proofs/artist/e229893d-9124-48a0-8e1c-7bc2378765b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x9dee195a27166bfce912cbb0c0f03bba12870d43ef6bbff959a7f8a157c1cc64","isrc":"QM3EF2300001","name":"Trust Me","registered_at":"2026-06-07T19:42:23Z","spotify_id":"6Tr21jU9bkvMInMemDrsB9","type":"track"}
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 0x9dee195a27166bfce912cbb0c0f03bba12870d43ef6bbff959a7f8a157c1cc64. 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/6Tr21jU9bkvMInMemDrsB9.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/6Tr21jU9bkvMInMemDrsB9.
{"copyright_id":"0xac2d02b584a0f33f5bfecb484d6215469a5882ce5afa103aee41854a1664e1b6","isrc":"NLF712110018","name":"Horizon - Da Tweekaz Remix","registered_at":"2026-06-08T00:49:33Z","spotify_id":"6cZ7302RchzWX9sDocYa6C","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2d02b584a0f33f5bfecb484d6215469a5882ce5afa103aee41854a1664e1b6. 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/6cZ7302RchzWX9sDocYa6C.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/6cZ7302RchzWX9sDocYa6C.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90375d74bda4a4171edee8ef4d3ea1a3b7b257e07e0a56561516294bcc061da4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/16ZWSIEvwO49R1I4CWtqmc.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/16ZWSIEvwO49R1I4CWtqmc.
{"copyright_id":"0xd9ae13bcc1236f72e5993ba2c203a73ce91537d024f40e1d2e9249a2e7995af3","isrc":"QM3EF2100009","name":"Here Come the Wolves","registered_at":"2026-06-04T12:16:21Z","spotify_id":"4Qk9JlQZ0I8afJcqemMQjG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ae13bcc1236f72e5993ba2c203a73ce91537d024f40e1d2e9249a2e7995af3. 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/4Qk9JlQZ0I8afJcqemMQjG.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/4Qk9JlQZ0I8afJcqemMQjG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acdfb201f1a5ebb0a5af88378d562e6505f357813dd8d02de834d1da283e267. 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/51jK7uI2QR8JCP4G9DnbQS.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/51jK7uI2QR8JCP4G9DnbQS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90375d74bda4a4171edee8ef4d3ea1a3b7b257e07e0a56561516294bcc061da4. 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/2EjoFmDw6IiBhoneqoISAL.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/2EjoFmDw6IiBhoneqoISAL.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390985549de19da7ec892cb1528541000578b3151901ce4e42f9115d3344268a. 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/3zDhwF22hV6FbPbOhx6Kib.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/3zDhwF22hV6FbPbOhx6Kib.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d2e049aea167080572869bec4e0246b2653928b32fbdbf77d33a33c70fcc18. 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/7BU29A6jHCamRJkKHRgKL1.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/7BU29A6jHCamRJkKHRgKL1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62432ed0e5fac0d5f027e135a60b49d2c3b09d058c2a109d54d03cfa91733863. 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/7neW2iRtLr7FBdhpxuddds.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/7neW2iRtLr7FBdhpxuddds.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a5ee012c059a0ea19d4bb130169338b487765f2e2bf35dcd2302fa4a6ef686. 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/0gSd8AG02vjkqHb0vjKP6z.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/0gSd8AG02vjkqHb0vjKP6z.
{"copyright_id":"0x0d06171b926269ae5e449a1f2ba1fedc760a73fa6bf908a6e1d204029c60c8e3","isrc":"GBKPL1672796","name":"One Eye Open","registered_at":"2026-06-07T13:26:42Z","spotify_id":"3EM6SgqdPofEipOFIRhLy1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d06171b926269ae5e449a1f2ba1fedc760a73fa6bf908a6e1d204029c60c8e3. 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/3EM6SgqdPofEipOFIRhLy1.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/3EM6SgqdPofEipOFIRhLy1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92d491b953cd1aa053ea735a182e0f82783d238180214987d875c3a7803bb8d. 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/2hsWm0y2BS0JHNyTXit5iQ.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/2hsWm0y2BS0JHNyTXit5iQ.
A State Of Trance Episode 850 (Part 2) [+ XXL Guest Mix: Gareth Emery & Ashley Wallbridge]
{"copyright_id":"0xac2d02b584a0f33f5bfecb484d6215469a5882ce5afa103aee41854a1664e1b6","isrc":"NLF712110018","name":"Horizon - Da Tweekaz Remix","registered_at":"2026-06-08T00:49:33Z","spotify_id":"5Fkv0kyk9Z7VOGRGOyfsK5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2d02b584a0f33f5bfecb484d6215469a5882ce5afa103aee41854a1664e1b6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5Fkv0kyk9Z7VOGRGOyfsK5.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/5Fkv0kyk9Z7VOGRGOyfsK5.