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 0x1d90f697764403ae486771b9264d5e037e693a58a42444ff1a7ed8276f6a3958. 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/2f7a2059-15b5-4ea3-951f-fc0dba70f8a1.json and https://artists.proofprofile.net/proofs/artist/2f7a2059-15b5-4ea3-951f-fc0dba70f8a1.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 0xd4ce66e69a000bea4ea1a4658f85d1a50f80d1c8d174a6c3763ea49e5a55996b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CLEN21602150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7554ab70cde12b074843f91f9e0b5a08db7ec67d5b4f178168bedfc918e35070. 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/CLEN21602157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0581e6c086898d5a3c86ea877cc61401a38391f1d1e9bdb688f31d48dde1193f. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/CLEN21602128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118ad8207588f5d5473a2af3aecaeb8fe72a494c6546be87bb2fe469c5e72a5c. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/CLEN21602136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a37967164fce4ee7c41693b55e78ebd6121b0b8721df7b7e0a74a9d673e9ad. 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/CLEN21602142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd277241ff095f10bc9a613db7354e08ffc054ebeb0e4c79b86e67a6b95c9a31. 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/USJ3V1410121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c75108a99fc0ba167c538115112b570dfa8d9e6957041236415664a6d80c556. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:02:12Z), 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/USJ3V1410122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d0ecb8ec92b305f491f03d6a12eb1f3bf4213582159d0e21e7e05557dbb285. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:59Z), 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/USJ3V1410128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4378cfd5c370dd78e0335f6c8bde319af468073b700997b9218cd26a54d502b1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USJ3V1410129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013e79dafe844328e97ec8452e73aa9f569feb744ea227c34dcdc606b6324f30. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USJ3V1410130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe612c147f834ca2c1bcab8e5e66454abca6d64c98d413d885f66b96916a486e8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CLA220200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad6d114531bc4e076c5d984b0a5184889eb7ac33c0b1dc07711e85c70194e21. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CLA220200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb202d6defa6434091384a4ac34d41a696d2cc38e79eb06f19701e4421112a52b. 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/CLUM71902990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5897aa6dcc22e09477d33c6cb7f5eb0e4303d7993565685cf9b3a29833a7e70b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CLA220400362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c8d64a5429a63d02558760e96c825eb65fcdb960279dbc4c41d6c2b765d5a5. 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/USJ3V1115563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127b5f7fd9aedf08cfa6ca665d58f4ecc5ed2b914a9eca1ce0242b20047f8c6b. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:46:45Z), 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/USJ3V1115567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812e09e63128ea5a845e4c53428b71d701e5fb22b0d6cb51e64622ae482bb2da. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/CLAB20903167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3c2875a41ddcf67cedec1a7c0b9acef67343f7e10c14a1c455c59a775c4b1c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:12:18Z), 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/USJ3V1309309.
Deja Aliviar Tu Corazón (feat. Álex Ubago)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6027b7cd77ba191b2c62c02e4c8f15634a719291766043442cf943fd16ffa7f. 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/QM6P41796319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5863c6efa696ba478c26f63fe9116805a96174c370d70313a6b1548840b71b7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM4TX1839367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa970239ea6d9171b94e4a0c4f5f96c5f1f77dec3d1f95ec15a5b53fc7556d04e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USJ3V1483235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc76cc3751ffe68de22737fc9bfa28f6a417c8ec9f7f7809b9e77495aa165832. 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/QM4TX1839370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4366d3e9690beaec3b7fb9b0d2471f1fe4d947000bf8711b25eb545e70dd2e30. 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/QMBZ91740835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8df8f28f0515d21e55d611a3a418ce4e91ffb1cbf94a1431805673059c65a3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM4TX1839372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6672eb2e2fb2d3c900bd97e684c7d35f9b58764031c2526d8f895b3a8a08c6a0. 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/QM4TX1839375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf68ef74d9c9fd97baec264d142ecd4ab60f96549beff74251c1951aa693d89. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM4TX1839376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28fb05806fc7c5752d1fd47b5eaa6afe52549a32a753afbd7077ff6c583468c. 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/QM4TX1839377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e6292eadca9722d93c1633b64d7cfe020eab4d11b879f3d0910ab428d35f42. 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/CLEE20801259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883f7c18401265091e500f53fa1c1f89819960cde3e4b00c1def35077f1ffcfa. 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/ARQIH2291605.
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