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 0x2309f535ef088bbfd1b4204b8a17902d92d72b71e0a43291c2c1215746a05f31. 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/f92abe26-949a-4b8b-92a8-df7b96ab849e.json and https://artists.proofprofile.net/proofs/artist/f92abe26-949a-4b8b-92a8-df7b96ab849e.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 0x5d149597862dae3cffa71ec8898b45aad50837f2f226c454be8e875126ca4156. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZK6M2188751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5b36a6f82a122f4e2a2ba5a7186cd624863bfe49008e2adeb2ab570f701596. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6M2187019.
Buscando Un Amor (Remix) [feat. L Fabian & Marianelida]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6743e063f379f41f03e0fb484b38b3df4eee97cae9fb7683f98f941ce3e1c10. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZNWU2162034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487b75b0f8e0947d70924d470ac46a2cb09631f3f5f60f8a970f3179efe5cd2c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZHN72227822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e266b68001706ec07866319749f05af5bbd68cfd5b587591d04cc9367b017d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZTAY2234997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d489e93cef22f52af4dbcb03287926ebb823d59718c0f17cef386fbb9947f1. 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/QZWFN2312745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c87864d2d436345dbd81a2d0c78fcba31d99cddbb1055ab36422ec6748abf7. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZTB42335594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25aac597f4d08bf590fcdfa0a2944e1fcdc7996e9cd5779157588c5a0eb79ab. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFYY2462343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b2435f282f5766fe453ca8d7f8b3d66d45d82709027430cad4501c84d9836e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN72405664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33a4dbef34e44c263dcb528e075965e5d9cef185821f07cdb582f65ff2a31a5. 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/QZNJV2525250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ff1770c1c42801e842ecb118ab3ddbd35dcd012fd6c3465fbaa8024be7fa27. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZNJW2507534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2525ec71e83716de882796aace2597dca7a5f9a599998181f133155770bcee. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNJW2506970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4357cc65e5232c24153b8ad33938ed8489077108b998400b3c9e62420f23c8e9. 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/QZNJW2507461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b04a74ad63695922238992b096e127b9d0283f2fb917006d35b0ac4c6d3e10. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/QZNJW2507573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b177a7f13c8c755c89ff9869574de17120c6fb8b66b461c6bc77da7ee82ed55. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNJW2507586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d7a73df201d6a0eac1163095923fe7dcd60a694784318f482c6c8757370de6. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZNJW2506949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf994f1197fde554d52359b4caf5b2806afdd8dc47a8612a621f55b012d8d6a3d. 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/QZNJW2523185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e80341c622373d5153569e30a3b4260e6d542cb5c150a04e2d0909d005db1e2. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZNJW2507587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4df56d85a9444cd0055225de13348417a9976003151a67c0d98f7a735c0eeff. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QZNJW2507450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78363aaa746b4fde8f0259590de76bbe33e28701df808bd44f51bb085d32b16. 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/QZNJW2523182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ffebf99585453701b4f1df3bf96f27404a147ace021f7c8f89483fbb70648f. 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/QZNJW2551704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b29a7c0f667cbdd9ed8702a783b6181b4cc51992b7ae0252230973c5febcca. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZNJV2561607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02424e0d466894ae1f26865a74a39235f424f0309edea917c0cfde4835c8c930. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZNJV2599233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a0f7ca7a6874d54230df926700efc661232cd8fccce35755631d5060371178. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZNJV2561520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2c06c8f249cf3fa6d3d9134c24adc2c7f4badd3a5d2bbcb5bfb0a8d4a6090d. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/QZNJV2599273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ad9fb840d19d77948eb4aa6e2c212ccd9bb281d9c5ed6588d065dd912fb8f1. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZNJV2561636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226638da2ca445d712a41d9791a8f18c6430ec414a05685664866ad77e16ad4a. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZNJW2548342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7bea159e70634b263034236125bc91c197c9257eb7c07f0aac27b7a2ba48eb. 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/QZNJV2598912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9514922d1a5346125a40d56cfe0e62580fddf3214c5b6f19280bd87d99fc096c. 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/QZNJV2599181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32904018cfc7733e81e679c5dd03859e5b3cf7f4bb4f521da47f4fd3eb6bbf5b. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QZNJW2551481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf760d79043e3a265f00b3acd0250a899ade828ce80a54fbd2c34c799987ccbb0. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZNJV2599091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8c8ea012a98037e44733c76219a49f7c19716abca2ea0ba4ad01230da77b81. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZNJV2598909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b99e2bd707720fe25b9d394341e73deec9880f61386d86c6bba9954a34a1b5. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZNJV2599196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ce09ff1f49ee5fff0108400dea40bb0d78ce5f57f6a22bd28323ef64210065. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZNJW2548346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33d71f82a0a55f17370a7fb21e09ef9b1a9368d427644ba97e12d3ef04bfe47. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZNJV2598904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a302f3bd1d061c0235e40d3da007ae55341b1cac9be1310aa8b4af3de3ac8f8. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZNJV2599071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86e2fbfeff56bda69d1bec801c20e81498c8cdcb107472d8d4517f97a0353da. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZNJV2598918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4de9d633e12b266c5267b0a1369cdb1dfa13a4da1935dec27fb1a65bbfa8284. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZNJW2523424.