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 0x413a9d0048de36be1aa9d4d856f8d2442b6dbf6067eaaa45a3ca7d3211920d47. 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/0fe15c9d-aad5-4d5e-b0a9-9e60d6f6f950.json and https://artists.proofprofile.net/proofs/artist/0fe15c9d-aad5-4d5e-b0a9-9e60d6f6f950.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x2cba5a2d8525eb4243c8509ae78fc8df785ca78c6dc24f6c4dbaf464498e2551","isrc":"BKNIU2500061","name":"Reunião De Matuto","registered_at":"2026-06-04T07:02:45Z","spotify_id":"2Gy5gOqRd5gKlYGszVcckO","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 0x2cba5a2d8525eb4243c8509ae78fc8df785ca78c6dc24f6c4dbaf464498e2551. 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/2Gy5gOqRd5gKlYGszVcckO.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/2Gy5gOqRd5gKlYGszVcckO.
{"copyright_id":"0x81f0a132f73f46b55421c5acf1ee37572427ac5d865db892fcbedd0b39ee8eba","isrc":"BXGPM2300001","name":"Favela Vive 5","registered_at":"2026-06-04T08:11:14Z","spotify_id":"5svioJ5BlJIYfQFPT1eq7v","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f0a132f73f46b55421c5acf1ee37572427ac5d865db892fcbedd0b39ee8eba. 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/5svioJ5BlJIYfQFPT1eq7v.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/5svioJ5BlJIYfQFPT1eq7v.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad376ad2d4a7bfd779b5db6279cdb9e281f7463c7b7697c27d2a9c278419ece. 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/0QurNXlrTisL68UcKAyzj6.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/0QurNXlrTisL68UcKAyzj6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26764fe51092ab3817eb828a7a395d7c5a500decf781fe0b4e28b3dfecb61bb. 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/37Dlab5cTdAa1XOu6IEqDl.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/37Dlab5cTdAa1XOu6IEqDl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418fcdf37d25fd39fea445b3d42cf43868a3822210ee902214c45b57e3e4e3fd. 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/7LwALVmyDxRqnCpvmrGfrU.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/7LwALVmyDxRqnCpvmrGfrU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8255294bc96a612463e0ebf892000e3048edb2e6f91ff676f9ffb6a106f712e2. 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/2uTniZ5v1J98gGAzrcR9nm.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/2uTniZ5v1J98gGAzrcR9nm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c32ab003f9bb64646b399b33ede01b4e5c98c4aa9f77327f726317cb74d9a83. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:28:22Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5KXbaTh1EYPzrxGiREEhhS.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/5KXbaTh1EYPzrxGiREEhhS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd795047d5c6740d9234c7553b354d7952d004cf5e2b8198d81ff4780627c0b5. 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/7oOZ6CmKSUUgTtVIYPJiNk.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/7oOZ6CmKSUUgTtVIYPJiNk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9713e694f66db471e370226fdbc3cfaae47285818e41199c9ecf3eb355e66072. 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/1Ow0D2ktm4rT28oxe4BUR4.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/1Ow0D2ktm4rT28oxe4BUR4.
{"copyright_id":"0x1e7ab81863d71e5475abffb63b10802abf4b0894f25215d653419b1ae9bdd7f9","isrc":"BXQZW2200018","name":"Bonde da Rock","registered_at":"2026-06-04T08:16:32Z","spotify_id":"6sC0OMXUGXDtzcm0SkJYv5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7ab81863d71e5475abffb63b10802abf4b0894f25215d653419b1ae9bdd7f9. 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/6sC0OMXUGXDtzcm0SkJYv5.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/6sC0OMXUGXDtzcm0SkJYv5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d8531cb43eb19f96983a2f82beee0d713299a1523fbfe935b2947d426bde9a. 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/4YPteCZ18FHQ8VJz20zn6u.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/4YPteCZ18FHQ8VJz20zn6u.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562771efdfe966785c90e6928491648e7f62d368402da14ed1b12116b9d99a73. 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/66M8DsLcUXmwKcYeTLz9GS.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/66M8DsLcUXmwKcYeTLz9GS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562771efdfe966785c90e6928491648e7f62d368402da14ed1b12116b9d99a73. 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/1BpIL1ZMDlGqsj8d9R7ZxI.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/1BpIL1ZMDlGqsj8d9R7ZxI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8793f974442207c2a88e6489e5d701bc605fc061c44c2bbb903e55da7f6dee. 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/4o9RbfyhanDFbT0vKc4h73.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/4o9RbfyhanDFbT0vKc4h73.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cd1e66649fb0b8bff8c76c7d75045890e4ec698e7597c06569ef5ac545cc77. 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/3hmDfbrPCKvp5teH2Ois6x.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/3hmDfbrPCKvp5teH2Ois6x.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff6860ca140d5e45c98ce2c3cca74bc111dc3b684e4c0e1310aa54590b65ec6. 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/3A5lGpq19udB8PNRBm9LKo.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/3A5lGpq19udB8PNRBm9LKo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceca68e2f768e47c295e649c4287fff64978fdcdf0b3a1b9163367c4d7512998. 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/5IWzGFDIlKS0YHlgKRDXMW.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/5IWzGFDIlKS0YHlgKRDXMW.
{"copyright_id":"0x6a16953eabca23ed22d3d567c28b0c2ddd52e2f8cbd4cec1ca2a5238d3ebf649","isrc":"QZHZ62065727","name":"Rei do Blefe","registered_at":"2026-06-18T13:34:48Z","spotify_id":"5t27B9l9KMImUTJlmnJaHA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a16953eabca23ed22d3d567c28b0c2ddd52e2f8cbd4cec1ca2a5238d3ebf649. 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/5t27B9l9KMImUTJlmnJaHA.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/5t27B9l9KMImUTJlmnJaHA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5c08117d6ced0ce8b53230f6fcf4749cac52347427002a2034c3408649d866. 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/3bsYHn9i30HKtqRRb5P98z.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/3bsYHn9i30HKtqRRb5P98z.