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 0x08b0ff6d125272a663dd861957db9852c1895882c074d0c049df256e94c0888d. 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/438c7ac0-882e-4b7c-b60b-ab1d8f228020.json and https://artists.proofprofile.net/proofs/artist/438c7ac0-882e-4b7c-b60b-ab1d8f228020.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 0x8a7f1ee4785ea7225b966904f9e3f0bd79defe58371c68421363041084d400f2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5sQ61UBKd71zZkWOaLqKhk.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/5sQ61UBKd71zZkWOaLqKhk.
{"copyright_id":"0x3310afb01b9a2f46e002f5da918d3cbc81fc586641e7e0d20af6ebc47124c1f0","isrc":"USDBB0601330","name":"Canto A Borínquen","registered_at":"2026-06-06T23:10:30Z","spotify_id":"4nXctRFKCqhWf0idntqYwp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3310afb01b9a2f46e002f5da918d3cbc81fc586641e7e0d20af6ebc47124c1f0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4nXctRFKCqhWf0idntqYwp.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/4nXctRFKCqhWf0idntqYwp.
Popurrí Navideño / Estrella De Oriente (De Tierras Lejanas) / Noche De Paz / La Virgen María / La Tierra Mía
{"copyright_id":"0x5717c7fedf30b12ba4feb969e26a37c7c264ee025f5f6c35a0c8152184ea6bc1","isrc":"USDBB0606159","name":"Popurrí Navideño / Estrella De Oriente (De Tierras Lejanas) / Noche De Paz / La Virgen María / La Tierra Mía","registered_at":"2026-06-17T13:19:18Z","spotify_id":"1meE6NbljHkJtBnSgbgOiJ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5717c7fedf30b12ba4feb969e26a37c7c264ee025f5f6c35a0c8152184ea6bc1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1meE6NbljHkJtBnSgbgOiJ.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/1meE6NbljHkJtBnSgbgOiJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9324bd0727fe3120dcb68adf35c3d20783549f347bd654cac8286a080f23048d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4RmeCueCNx9CfJ7UVDSZ18.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/4RmeCueCNx9CfJ7UVDSZ18.
{"copyright_id":"0xc30e49ffb730c774b53e4b2b71b4b46a93650b2b7a0da0e3c4c64df3f95e5d71","isrc":"USDBB0600885","name":"La Murga","registered_at":"2026-06-10T02:18:50Z","spotify_id":"6SSPvzPn4onxMs9otLSE3H","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30e49ffb730c774b53e4b2b71b4b46a93650b2b7a0da0e3c4c64df3f95e5d71. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6SSPvzPn4onxMs9otLSE3H.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/6SSPvzPn4onxMs9otLSE3H.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c5f0e92166d55ac0de717259e33d4842f4bb3ccabcea1b58c315033c920860. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1zqKJpXGP04d2e6mXtEjQY.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/1zqKJpXGP04d2e6mXtEjQY.
{"copyright_id":"0x1062284dc11f755c6ab9ef60601f0b199a93df94daff7672735ed10a1b4f087f","isrc":"USDBB0604226","name":"Vive Tu Vida Contento","registered_at":"2026-06-08T11:11:29Z","spotify_id":"4pvPJiNb899zvdwHOSviCp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1062284dc11f755c6ab9ef60601f0b199a93df94daff7672735ed10a1b4f087f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4pvPJiNb899zvdwHOSviCp.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/4pvPJiNb899zvdwHOSviCp.
Pescao (Popurri Sambao): Si Se Quema El Monte / Coje El Pandero / Pescao (Samba)
{"copyright_id":"0x6b6ecfe0d95732d085b6e394dc9892a68b6d3c056eadd243f9d13faeea9dc2e9","isrc":"USDBB0609374","name":"Pescao (Popurri Sambao): Si Se Quema El Monte / Coje El Pandero / Pescao (Samba)","registered_at":"2026-06-19T08:50:47Z","spotify_id":"72vn1VkETcnhmWGzn1b9Tm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6ecfe0d95732d085b6e394dc9892a68b6d3c056eadd243f9d13faeea9dc2e9. 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/72vn1VkETcnhmWGzn1b9Tm.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/72vn1VkETcnhmWGzn1b9Tm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3295b12e6e5c4ab6d7eb683ae40ac0f72a2eb288afa66705374b0549a0e7fcad. 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/3uhp3gUpFLx0dGQYJbuFZu.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/3uhp3gUpFLx0dGQYJbuFZu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5c5d807ee99dd726b9074362a19cd58fc8648389edd630f34a86cf4f9a1503. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/23FLFMosjavb8pDIY8Ysnc.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/23FLFMosjavb8pDIY8Ysnc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cfd353a055ede3ac419317affd95b6fffa9ea52579848d0769f4ddd8eccad9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7JTCHeMm79lfODEHGD1s1W.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/7JTCHeMm79lfODEHGD1s1W.
{"copyright_id":"0x6445a60c2ab1dfb9692eae18c2d976b8bada6e9b86f3f0f43b084d1e139254fe","isrc":"USDBB0606077","name":"Pa' Los Pueblos","registered_at":"2026-06-19T08:48:53Z","spotify_id":"3x6uBWAsLUrTcJyB7I2X33","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6445a60c2ab1dfb9692eae18c2d976b8bada6e9b86f3f0f43b084d1e139254fe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3x6uBWAsLUrTcJyB7I2X33.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/3x6uBWAsLUrTcJyB7I2X33.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485de4958be7f8f9dfb568a7e629cdf9decc0ab60e93a4d34ef2c0b7afb29e6d. 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/02hPLkWvmFYpf8OSA9ou0O.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/02hPLkWvmFYpf8OSA9ou0O.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dca7960700e40ad842b801d1651eb796c542bd4a413cffcf9ce77663fa0a7d7. 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/2znAj9cpS7GzXgLPvEjvSI.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/2znAj9cpS7GzXgLPvEjvSI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf189bb971957167e0bb2748809b24e983f9f982b32f07ed650dbed876f7b9f62. 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/0PIvjAOQGDWE8Z45dMqj3r.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/0PIvjAOQGDWE8Z45dMqj3r.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232742cd8d03ae09e9c49a8cd1e2257b3c96b0215b70b3608f35e070a4f8d510. 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/1AIuUlopQi4e4dmoj2DCnJ.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/1AIuUlopQi4e4dmoj2DCnJ.
{"copyright_id":"0xc624ec06e92c140b6af67eb1ea10756588044dde7eeb746d7dc12b8692e4c036","isrc":"USDBB0600534","name":"Juana Peña","registered_at":"2026-06-04T10:34:32Z","spotify_id":"5GEIGZe4HSvgn1PPhfdfid","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc624ec06e92c140b6af67eb1ea10756588044dde7eeb746d7dc12b8692e4c036. 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/5GEIGZe4HSvgn1PPhfdfid.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/5GEIGZe4HSvgn1PPhfdfid.
{"copyright_id":"0x4fad04917753ca6943e85be3e05d29242d2128519bbdcda6b4c06a439d5534ba","isrc":"USDBB0600641","name":"Calle Luna Calle Sol","registered_at":"2026-06-01T19:38:54Z","spotify_id":"6FsIbdBoXAGU5qTs69gz3R","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fad04917753ca6943e85be3e05d29242d2128519bbdcda6b4c06a439d5534ba. 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/6FsIbdBoXAGU5qTs69gz3R.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/6FsIbdBoXAGU5qTs69gz3R.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebbd5361a3da8a4bd161af1040c0366f3e1c39d6b25c64da0e0f8cdde2b0918. 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/0W8ZVTpUdVm6LffjrqFESp.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/0W8ZVTpUdVm6LffjrqFESp.
{"copyright_id":"0xbb313a2e6ad043c824059bec9457af7438b10cda1e6a61172074cb9dd814fc5b","isrc":"USDBB0600749","name":"El Día De Mi Suerte","registered_at":"2026-06-01T07:01:50Z","spotify_id":"5YcdXRva8HCAdDMOFbhP9R","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb313a2e6ad043c824059bec9457af7438b10cda1e6a61172074cb9dd814fc5b. 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/5YcdXRva8HCAdDMOFbhP9R.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/5YcdXRva8HCAdDMOFbhP9R.
{"copyright_id":"0xff27408b4fb2ce39ca9eb9ef8fcd39bc74f81eca92f0655b525c23f9111f1a07","isrc":"USDBB0600537","name":"Qué Lío","registered_at":"2026-06-04T09:48:10Z","spotify_id":"2jFbuXFDhtIfcRIz9GrG9w","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff27408b4fb2ce39ca9eb9ef8fcd39bc74f81eca92f0655b525c23f9111f1a07. 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/2jFbuXFDhtIfcRIz9GrG9w.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/2jFbuXFDhtIfcRIz9GrG9w.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ac415a69b8b6e4930a6ab181b05414d99f582714e5151bfe0e635002005c64. 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/19E33bWxG6sn6gJG81vfzN.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/19E33bWxG6sn6gJG81vfzN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302d6e2c0e2922ed6d5f220e4a7fe9846c2660c179340a3b1394c35a494e3cc9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1pJ1IHdKkVGP7Xi1WkfdIJ.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/1pJ1IHdKkVGP7Xi1WkfdIJ.
{"copyright_id":"0x60e6fa311512bf2bc942f0f74e58ee3dd466b96bfd40d28977b393e0eb1f71a2","isrc":"USDBB0609575","name":"Todo Tiene Su Final","registered_at":"2026-06-25T04:36:42Z","spotify_id":"5CKhbcNbrqpcWdVmoQsjb1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e6fa311512bf2bc942f0f74e58ee3dd466b96bfd40d28977b393e0eb1f71a2. 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/5CKhbcNbrqpcWdVmoQsjb1.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/5CKhbcNbrqpcWdVmoQsjb1.