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 0x908a5bf4a59b77547ff715a442ac12aa2109321093ca2bea8fac435f473d96ec. 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/10a7d3b4-1355-42a1-8eff-03fc17a9a5e6.json and https://artists.proofprofile.net/proofs/artist/10a7d3b4-1355-42a1-8eff-03fc17a9a5e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x47fb2cb2e3e4b4882ad40dee00003b9b54b33c437faa71f1bdca74691c26f2c4","isrc":"FR2X42452129","name":"ICE CREAM","registered_at":"2026-06-04T07:45:15Z","spotify_id":"6wprSQTo6JpzI2bGiWVThv","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 0x47fb2cb2e3e4b4882ad40dee00003b9b54b33c437faa71f1bdca74691c26f2c4. 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/6wprSQTo6JpzI2bGiWVThv.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/6wprSQTo6JpzI2bGiWVThv.
{"copyright_id":"0x475ace7de6094ff60b7303aaf3d96bafd37f281a54eed75db7159d2e3fb3d5ed","isrc":"FR59R2488540","name":"MODO SONRIX","registered_at":"2026-06-09T21:17:21Z","spotify_id":"1Ml4Vwq9HajLP7EnZawZth","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475ace7de6094ff60b7303aaf3d96bafd37f281a54eed75db7159d2e3fb3d5ed. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1Ml4Vwq9HajLP7EnZawZth.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/1Ml4Vwq9HajLP7EnZawZth.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353cac9a37c2b0f1503a3431220709e9435346e413df983ff09eabfdb3857030. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3FVDjeHse1BADRVsHsEIBT.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/3FVDjeHse1BADRVsHsEIBT.
{"copyright_id":"0x688bd7dc071391c4fe61190b8d9a2cc79be1345cf304a9218ad1dd7e47961cee","isrc":"FRX872436518","name":"LAS FRESITAS","registered_at":"2026-06-08T23:26:58Z","spotify_id":"6RXtrclw0jZohPXITi5jio","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688bd7dc071391c4fe61190b8d9a2cc79be1345cf304a9218ad1dd7e47961cee. 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/6RXtrclw0jZohPXITi5jio.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/6RXtrclw0jZohPXITi5jio.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0443e58ce11dea9d7c3896c1324727f62f7f0954eb31beb53d0fb077d4899c6b. 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/6lRIFRwMhQA8nXDoJTt6C1.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/6lRIFRwMhQA8nXDoJTt6C1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fb2cb2e3e4b4882ad40dee00003b9b54b33c437faa71f1bdca74691c26f2c4. 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/1k8cCIX076ZfxFBr5cVslC.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/1k8cCIX076ZfxFBr5cVslC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452375f90bcb9c02dd239af9b791af3e8f0c62a3e2051451ab6497220bc5b1e7. 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/3wdiPuwNCBjfcLwt4KTCcm.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/3wdiPuwNCBjfcLwt4KTCcm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353cac9a37c2b0f1503a3431220709e9435346e413df983ff09eabfdb3857030. 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/1ZBobYsintPZcxgSeNMvWY.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/1ZBobYsintPZcxgSeNMvWY.
{"copyright_id":"0x475ace7de6094ff60b7303aaf3d96bafd37f281a54eed75db7159d2e3fb3d5ed","isrc":"FR59R2488540","name":"modo sonrix","registered_at":"2026-06-09T21:17:21Z","spotify_id":"2yb2x4KEtTOM5i8BBez3mi","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475ace7de6094ff60b7303aaf3d96bafd37f281a54eed75db7159d2e3fb3d5ed. 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/2yb2x4KEtTOM5i8BBez3mi.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/2yb2x4KEtTOM5i8BBez3mi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3103c9c983fb4c42e5d3c398978c66c4c8a162c77acd7bb0cb2ac70c5d426ea4. 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/3SfRl0XfdunJRv8sv1f2xr.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/3SfRl0XfdunJRv8sv1f2xr.
{"copyright_id":"0xea1e2f594b817eff72fe2bab78f2d974ab7d16d4ab88a4b8eb7c56a5cbcc0110","isrc":"FRX872436521","name":"TORTA POWER","registered_at":"2026-06-24T03:44:10Z","spotify_id":"2aaSMrblJZrLWH8MWvePN2","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1e2f594b817eff72fe2bab78f2d974ab7d16d4ab88a4b8eb7c56a5cbcc0110. 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/2aaSMrblJZrLWH8MWvePN2.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/2aaSMrblJZrLWH8MWvePN2.
{"copyright_id":"0x18af46cee038fe3fe1df889edc9d4bdd0e3cd6a3ef836eaba7f6aa8b0b950d57","isrc":"DGA062404203","name":"El Diablo","registered_at":"2026-06-25T07:39:30Z","spotify_id":"7DT2HVghhBTxDkT96dPNBX","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18af46cee038fe3fe1df889edc9d4bdd0e3cd6a3ef836eaba7f6aa8b0b950d57. 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/7DT2HVghhBTxDkT96dPNBX.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/7DT2HVghhBTxDkT96dPNBX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716e2214980b50a5deac22e1de316176a5ee431bf259feda4c54b3f24c74bbdc. 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/3L7H725mbGgNYgTMKdNgKe.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/3L7H725mbGgNYgTMKdNgKe.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bef33eff64eecfc8ca274446513b04146c2209ec983fbfd250ef922551b332. 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/3vUnFHp62aKJiap5WQlt1o.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/3vUnFHp62aKJiap5WQlt1o.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c31c0259133758369474f9ed13c030cc47dbfbe239ae96461bfa6a95aa3e6b. 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/2PuG347iKKc6r3AmD7fBI8.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/2PuG347iKKc6r3AmD7fBI8.
{"copyright_id":"0x18473fca63d86869ea9dcb6fdb626428bc874f65d271194dc9db6b05a5c1f424","isrc":"DGA062404209","name":"Dejaría la Loquera","registered_at":"2026-06-21T06:08:48Z","spotify_id":"2JMdxjBsdvlx2PJIFSmpAN","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18473fca63d86869ea9dcb6fdb626428bc874f65d271194dc9db6b05a5c1f424. 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/2JMdxjBsdvlx2PJIFSmpAN.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/2JMdxjBsdvlx2PJIFSmpAN.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cbca8d1da46f67c63b3a77835da55a329c9ab878a0e53536207092d422a952. 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/74VeaU1rwSfs04uovATnNC.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/74VeaU1rwSfs04uovATnNC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f568ee80e2d3c983e7a55c2eb6daef4b99306798c710877c1644d1ae6079442. 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/5C1Ipmkrk1Be95fvraAz3M.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/5C1Ipmkrk1Be95fvraAz3M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930cd2503a367355651880d9aa0c423e9a7326ffc4ee5f145cd6d6be12350ad6. 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/10CdhPVB74QlSu12BR2mfE.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/10CdhPVB74QlSu12BR2mfE.
{"copyright_id":"0x9bf48810451d369d78a7cc45d778ff48f03040a25f3f2a60a896fceee211de16","isrc":"MXUM62300238","name":"Rumbos Del Salado","registered_at":"2026-06-21T11:02:01Z","spotify_id":"6PdT6pwW5FpONRwy3vJpsp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf48810451d369d78a7cc45d778ff48f03040a25f3f2a60a896fceee211de16. 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/6PdT6pwW5FpONRwy3vJpsp.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/6PdT6pwW5FpONRwy3vJpsp.
{"copyright_id":"0x18af46cee038fe3fe1df889edc9d4bdd0e3cd6a3ef836eaba7f6aa8b0b950d57","isrc":"DGA062404203","name":"El Diablo","registered_at":"2026-06-25T07:39:30Z","spotify_id":"0p7PvzcFAuBtxrXAiKPRVQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18af46cee038fe3fe1df889edc9d4bdd0e3cd6a3ef836eaba7f6aa8b0b950d57. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0p7PvzcFAuBtxrXAiKPRVQ.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/0p7PvzcFAuBtxrXAiKPRVQ.
{"copyright_id":"0x716e2214980b50a5deac22e1de316176a5ee431bf259feda4c54b3f24c74bbdc","isrc":"DGA062404204","name":"Ojos Rojos","registered_at":"2026-06-25T07:39:50Z","spotify_id":"2TfmFxEND8EH0OZ9hjAtfw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716e2214980b50a5deac22e1de316176a5ee431bf259feda4c54b3f24c74bbdc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2TfmFxEND8EH0OZ9hjAtfw.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/2TfmFxEND8EH0OZ9hjAtfw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bef33eff64eecfc8ca274446513b04146c2209ec983fbfd250ef922551b332. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3OFCKX4FfgbGoVyrNYrfC8.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/3OFCKX4FfgbGoVyrNYrfC8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18473fca63d86869ea9dcb6fdb626428bc874f65d271194dc9db6b05a5c1f424. 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/6H1O5ttsjNPcWXkKG1M9bD.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/6H1O5ttsjNPcWXkKG1M9bD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cbca8d1da46f67c63b3a77835da55a329c9ab878a0e53536207092d422a952. 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/7JmNvpMcYI8QkECL5hflt0.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/7JmNvpMcYI8QkECL5hflt0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e032a7250f94a9e83573050e35c7be1b8895ba397b1cc775bdafb5f060340bd. 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/54597K9vwbk4zlCAUWNUpQ.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/54597K9vwbk4zlCAUWNUpQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1320659b2b716b763f49c14988097039da2496dac45e7d3e45f2b9d1672d803b. 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/0aVKhVER3M9lpNVIpvpP2R.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/0aVKhVER3M9lpNVIpvpP2R.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1320659b2b716b763f49c14988097039da2496dac45e7d3e45f2b9d1672d803b. 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/0Sqvm5B0QtBEA1FfLGU6Q4.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/0Sqvm5B0QtBEA1FfLGU6Q4.