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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eff93a4123b0cabf5b0c3cf2a8e8c3e30a61cc784aa6ab2dca9fc38febb23e. 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/efa5fadb-a67c-4fd1-9dce-77f3c03e588e.json and https://artists.proofprofile.net/proofs/artist/efa5fadb-a67c-4fd1-9dce-77f3c03e588e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ed73bfb6d3dbe0ec6704fa00dcef76cde01178deddac3addd87cc0ca201e70. 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/TCADC1789088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf777aff8387c7da77521a430458a396dcb8fad438f3f56452f65175777e27525. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCADC1789095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756b85c9e081395d9daa558be6904babee164711c18c3f74c680d040bf6d0369. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCADC1789098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa219ca62b8812864eaa9124cf80b6bf6df382bdef941a3625d96687cb46dd452. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCADC1789108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91db8cfb3a3b8cfb62e3e91c8a9d8c5cf70c383a580dad4c206163a17852cd6d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCADC1789077.
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 0x6a4a420be4ed50bba8df0039759b772b3f1c798b2c6d45050c59ab94578a88bc. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/TCADC1789079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533a066ac4a65bb2293b0ed7260e2f198b064bcebf2e17b56aa15f56fa67cf17. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCADC1789083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed981c66eb71fd768704220916d8f4024fce4069ffaad2e0a10f9d5abe3cff87. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCADC1789085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6610a35ebee1577e957f64af3320a9f391a669eef3388b6b15f4547d205c89. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/TCADC1789086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85fe6870945602cad3b5291ade3ba98bffe723f704e38a54ea672283b5556b9. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCADC1789091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bf5a28f1cec9a63956fe26ccbfe24a0c23d801f463108fb3ab29f240030e1e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCADT1817253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5a970dd4ae2bf1db095e77cc96433e2b6d832fc7188613b62f90b8a335bfa5. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZDA71931183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e4f8145ecb779076ab23b42c9d79f684973867f4c1635195d28ace67251767. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCAEO1925101.
Mil Motivos(acústico) [Version Acústica]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32692f0e33cd726b932acab3cbbb7f7ff0637c911bea34df8c155ed0b0c8ed95. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE6XX2202978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57f15c30d970d8fb054bd9c4aa4530b1df178574c83cb4a9ce98fad367c8e11. 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/SE5BU2249045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9d5ac4b8e3860e43e1625594e4b6acb2ad0fe9dc8a124539e452b688343073. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/SE6SA2336273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370b528f34efd580ece5fb421479d6f3f553bc399da2cdbec686f6d616ffd589. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE6XW2419507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398e6fa827318837dd71ce8934a3aa42e3f50db8ae727c73be700ec9e1b769ae. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE5BU2501031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc1e75503f8ff512a150710561b56dd0bb8e137c9b2929197dd436d2780fa38. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE5BU2536892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cddfe24e89864546f83a1144141edc96a01baa19e45bf4dea70646dde0144d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/SE6QE2452247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac69554b5df15452cdf99876fcc2598f3a80332f066bd437a127b308aaf2f29. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/SE6XY2562078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd977ac01dd4e6142fb05f2ef402633e950d072417d5272d22dc4697e2cdde47d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:02:49Z), 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/SE6XX2350300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f60a3ec37859a22d8568c425efbc3bbc637ffdb9f8412cef4068ca216c62ea7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/SE6XY2562081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b63f1fa68305b23ddd8b2107b560eccce961079ed5ed327ac2c55caefade88a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBWUL2149249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e662088da2e32efd88d7b210d3b50784b37ab5c900aa451cafb32431d035c0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCGJ1992738.