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 0x83599d7a468ffa48fa03a6b26a4f3eb051fc259960c3a498857ca7227020838c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35eda96e-973d-49b8-9c65-cbb20928b67b.json and https://artists.proofprofile.net/proofs/artist/35eda96e-973d-49b8-9c65-cbb20928b67b.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 0xa7378eda1f66993fb27a2a8aea53411219cc8e02d4f3d5cbecfedcbe3cb4c16b. 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/ESA011922526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb42aeaded2d3c3bf4e6c79e52b1d4b892ddf00330c749800614473948550d56. 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/ESA011922528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fbba734d7996ca39a967c29d8432fa14ff057166c79bcf4f00914db150619f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:34:33Z), 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/ARG101310250.
Quedate Tranquila / Si Te Agarran las Ganas (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2cf56440ef1bc7c34be9b9992a57cac9c6944c971f1451811c4951d6669a3c. 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/QMBZ91773418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe626d546fe06f62cc5ffebf4f7678aba6d196c7c4c9c77624d48517a497b3fb1. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QMBZ91773417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb0f61f9f93f12ad394e3984cec327c6004f4a667128638a79d8e2abf055614. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USANG2193825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c445edc05c355c81ad0e9e577ce1312d1be549afdc782bdaec4e6f1b018541. 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/US3DF2111814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb0f61f9f93f12ad394e3984cec327c6004f4a667128638a79d8e2abf055614. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/USANG2193825.
Solo Un Beso / O Me Dices Que Sí / Besale A La Negra
Basta De Mentirnos / Vendedora De Fantasía / Está Escondida De Mi
Más Allá de Todo / Culpable o No / Fría Como el Viento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55693335da5a17adf61e8a14a30368d716f496ebb5293812b03d0f46592068d. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:33:13Z), 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/ARQIH2290892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2965fe90622221f2bfd483cd25914e62790819982548f17f04cc7bcdb0fe487. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:06:38Z), 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/ARQIH2291139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeff235a152d66337696708b31fb8db5416dec9928e1d71e67e008ea80af24f8. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ARQIH2291638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd370e6256caa04fa2c19f51bea8d0fad1dc8fa8490a948a7b52f8120dbce3f8f. 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/ARQIH2291878.
Abrime Pronto / Fingías Amor / Otro a Quien Amar / Me Parece Que...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e6d1dec000207d3751085ca58067ce58ca5f29b01a8839ff3123fdb9a7ed02. 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/AR5UH2301404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bc297cb9a08b32ae83bf2ef8a892fe8a9e4e4900d0af62eb672a5a7b49cb08. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/AR5UH2302009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cca248198f7cd49ee21be2207290314aa9130779bd6ad24c39692aba96d5a4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARG102420621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bcc97449cf3955f98b1fafc48841a443a8745f3af7dfb6fa95b7248b68a732. 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/ARG102420648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09716e250ef71f1eeee8a93df5b194e6a89e3c8f481e966f00c1bc812e311d30. 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/AR5UH2401271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ceb94def399c1f13f77258c24f476faee891c8cf2ebef97d65d8128566cee8. 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/AR5UH2400148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bc297cb9a08b32ae83bf2ef8a892fe8a9e4e4900d0af62eb672a5a7b49cb08. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:05Z), 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/AR5UH2302009.
NICO MATTIOLI / Zapada EN VIVO en UN POCO DE RUIDO!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c28bce935261c1b6af971f2747960efd04a4cd5ab001c492240a555194ccd18. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AR5UH2400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeac8526c61945ab44044868da7445e939a8f8531e259a944182f83cd4d6bb5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AR5UH2400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d0b3a7ec228e268cd5ed92c83a7d0f0bc18e5da44a52242e43316d3e0f1806. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AR5UH2400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7724484d56d8957b3c94eac431ecc7e4e779bfaa52536f3d21458cd9dfa6e1cd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AR5UH2400357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a322c05024a2b21dce4628a6a72b69a2c562e91ed9995e0f5d30b01a3f99b43. 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/AR5UH2400358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a710e95b75c2c29b3b22f5627729d787bfe9c410d0479a8d6193c1c07b804d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AR5UH2400359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ce3b142b40cc6165ce2c60a3cc44b9e56845643d127fc71df3f1b27de8956f. 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/AR5UH2400360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c8539556b79da7fdb1fc2aae627a2eb44d59136b8550d39cb5915770c0c3cf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AR5UH2400361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294d1789bbda30fc2e5009b09a0a89a4458752830a287d2bb3d774acb8451bef. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AR5UH2400362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803009adc944689c00d3f9a018ee63e81be4e05a4311b3d1240ae7d57b37356c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AR5UH2400363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185202f4061313861dbeafa340d8eeb94e5e19a495644b99a87b34e50dccc925. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AR5UH2400364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808f9f614bfb3a1b7507abe2468317a327292c3d910294b35b815b4475582a03. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AR5UH2400365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6eca4c4d9af3fc6e80349f23829203bad45b55d392377a6a367ea3aa5280b6. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ARHXW2302543.
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