1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf132e22db8172b6f684423c9759bf040a81232e19e50e45278dab011cff010a5. 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/866eb488-ce33-497d-a1ea-91484804e61c.json and https://artists.proofprofile.net/proofs/artist/866eb488-ce33-497d-a1ea-91484804e61c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe510443eabac5fc720953712968895f21fa21c07eaad19d74c742d9b3a20068c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2255026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ff63d9b4909ea39ea0208af00cd31e3243756312053e99bf4a9797ed2da8bd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2163034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e210e20ebfef87a42fe0d2fda5e596f2611e23c34c4e24cb75a1b2c49db7f0f. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2255062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc318e4bb8ccfd16bc3b0c31affe67177f08103f284d0a10fcbfd2995c77d8edd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2255058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c344da72316eb3b080fad156e5a342f67d4fcec95db894a7b8f69ccc48379f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2255060.
Por Haberme Enamorado (Versión Acústica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8944d5b06ca87bc4bbb7e6a380d4190e89da428755afe8e9f2eed7eea58ff96d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2163036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097a4792731389edc539e881ffb39b153d9c865d62a4367a90c87be7f29722b6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2255027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf517a5cdb14c855acbd00c004d3064323bddbfb4e51b33da2d8dd6fe62569e92. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP1927863.
La Historia De Siempre (Versión Acústica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8007ae622506861fcb445c863515cf063873a0d7f65acc68f5564f096cdd1bdc. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP1930394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb51891cb9f7744ecfb9cd8e3f55244838d7f908c34f61a57d4ea3d345bd517. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP1942406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a2b603b723e4aa01e25c071baac5e738a0e8cc7515cf02f278a21327e62352. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2255044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdd6987a65935ffeadaa4f769c795ef73f5562af5631b3fea0c28a843d4185a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP1945900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff98605cdf9203ff88dbeef42b927f8747d31d97bbdd387f59fbfca350d26805. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP1934980.
Al Mirar El Sol (Versión Acústica) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca2ffd3799c15704730e3716978771c2d095ccb781dc9874bf93b3ddf0368f5. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP1945902.
Desvélate Y Apoco No Recuerdas - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef6dddc59cad5687787251dc6f6be6f7df67930fdb597cc5deb8632a82150c6. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP1945901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0dab0c3704c51102d63dcea63534e7ef57aedee02194a3b7ceacb07d42f407. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP1948907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8944d5b06ca87bc4bbb7e6a380d4190e89da428755afe8e9f2eed7eea58ff96d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2163036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0b8657799d26c6f7943e5d31a42d08c04005708798716eec8df8fd3393f1c8. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2163035.
La Historia De Siempre (Versión Acústica) [En Vivo]
No Pude Detenerla (Versión Acústica) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8ce7a28adabd7ee8cf7426dde197c5fae5f820aa29f40e768f0cb705bba0eb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP1934981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff98605cdf9203ff88dbeef42b927f8747d31d97bbdd387f59fbfca350d26805. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP1934980.
Sin Fecha De Caducidad - Mariachi En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a0a022e5c6926a3f9df039af749fc72f1bacf8e8a5edd1c9f13b78047b8d68. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2255063.
Sin Fecha De Caducidad (Mariachi En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f6b464d69baf5725e07c35a5085ef29c014a9aca5bc3ff7e4908673719294c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2103387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcb5072548ab82fc4c1c5e50365df8a36fcbfbc36a38f2080f974a7676605a2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2103345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4245594c8a82e544e48fbe4f39c3aea540340c9a549b5d9aea2a08fca4d74d5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2103416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91196f7db8e7a4f3ea2b3e696579d0f4b13608c71636613e7d5d12d027f451b2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2103875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3393eb09afae40ae7bb09f0ec3aa695c5cd54f73271e4c0f22ed2c007f220e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2163146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f06d9444c331e26892e2f7e4e1226813d5614f6ae57f68b3b3c00ec4f2a929. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2104374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f06d9444c331e26892e2f7e4e1226813d5614f6ae57f68b3b3c00ec4f2a929. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2104374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d99e5f5cc0eebadf5223aaf9dbede9a68d1f6f6a1c3e1dfccd449c956e64ccf. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2105197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f995b7417b2db5a7624e4437d76823de2bcb72a2032560414e57645f0de330. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAIG2439875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e024715311191a3ec28b95c90a423a17728ad84b2032efe73bb6283d87149fb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2381778.