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 0x4a8489dbe43ab4b783c6080e63a77213828d87a3ce6f916300185b8d7d0a97cd. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c80f4235-e5e9-4751-ab06-3d546c584f69.json and https://artists.proofprofile.net/proofs/artist/c80f4235-e5e9-4751-ab06-3d546c584f69.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 0x1a98e1b176e0f623081ef9c2b466c75cebb97cac226d0da7f9ef499aa2898362. 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/CA5KR2158161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb891a8de56c0e6e65e6dc8d75fd50400c2e870980f3556ad0d5d758a13083cd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA5KR2158163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fe3e3b854885bc630f1fe339829e19ab43911d1f1a3a157db41d1651a80acf. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/CA5KR2158164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55da160222a07e26f04487812cbd020b33a7497a784c932789b48710f232b9a3. 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/NLCK42214114.
Atrevete - Washiwasha 'NOW IT'S F# BITCH' Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61449c394b6ffce7d878dc88390d40530f125f30110b881c6050114a53d36a1f. 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/NLCK42214116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8127dff55114e5c93be8ea47c2baeaa4690f82b657ddc15ff8f8041a9ec76490. 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/NLCK42214117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17be6c54571022b216e37f9a829d8a71273d7f72534c0bea58348c23254bc6a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USUYG1338085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00dbbcc837087ec656b89e82b59b4abf64a8060ad986f450790809163274ee1. 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/CA5KR2022876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7796aa746c6d245f880547d83ce70b233eb16945cfab09212ec32d29288c3b67. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/NLCK41052834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbdf97c5e745079a6590adfc6d7abe08b6ed6cf644472d570702469480cef48. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/NLCK41052835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25100186899ba91b35f2dcf440023abd040d3a71fc7bf6ff243d4da17b586dbf. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/NLCK41052836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b60347b669688d8b18d5532b1ec4f421b468d189623e25fc31ee173b282889c. 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/NLCK41052837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245162a79195304401345cd3be9c0422d4da00dab14e32fcd06f1a1f5a3670d2. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NLCK41052838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f78bd80011371698c30c3f5fb31b1a9de88789bb3093e729c365873c5e9355. 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/USUYG1203521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215c81514ecbe8555bd696db7e92e2e4b5f8c6549fbf93f1643d27e49d14f387. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2190288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17b115856ee83d6f5b2e188ac07436cd9916d1a0eb6e6531443cdda677e4484. 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/CA5KR2176271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633886f83c2e5d8e592a13c2f8830f8089d3171c1349f046c4a56c67b536206c. 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/CA5KR2177547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8310a79ee921a8e455825d438de429ae8b08befc56834bba31deeab49ac141cf. 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/CA5KR2179791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f2354e27d16cc3685f70910f2fe0337894e1f8cd4a92d00637c64396c5878d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CA5KR2183854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6709d53caf32c12d04519208be67ddc50df1e6a4197b35c197bf22701f02bcec. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/CA5KR2186247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55efbd5ea4ecbc54bc6f8366d614ecf587c18228b0b9cdb3658a4c02f526525. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CA5KR2194715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21e6aa962e8526e3c85368b867bd13fa4b552f195b3f86747b98c90b3c3e7c0. 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/QZA742103820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed4d2377c09fdcc43e9904f58387b7e8fb26fff26e30d5ca2a096b27eaaabb6. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CA5KR0012438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4b3124dae40e5f643f8d1170c586a547359476918474477087ca2c9b135dff. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/CA5KR0012440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfd12a6ebc71012e59eecb9decae931354cfeda113ee94ea839e318333eadfe. 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/PTEN11300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbec30a75d7f3ca3f81906de9f7e077cfc0e3c1100a294825c051823192a216c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PTEN11300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67d6e0a1ee2a70b15d765befe4966df8f72640eb785570b7b20280f71ea0fba. 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/PTEN11300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a7fdea33dc4a49617de96d227cc211501aec3b0e487296bd291e4aa38bd72b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/PTEN11300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1d36bf1caed78a7a2f82e2eb8f58197fda662bea605c729d03c95dad361e7e. 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/USUYG1238539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8c8fa5200af3bc2197f931b58b6ad03b241b2a127c54340ced8a5c93cf319b. 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/USUYG1238536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3697f0010b82e8e8ece5bfcca686bc560299bcbd17040d3feca730ab0d19f0. 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/USUYG1238537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697c7406612d271d77f495d6c05db974106d984f2ca53341d3c839c3f1cb5dea. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USUYG1238538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89e8fa9f8a14dcba38b38dbb4b24f12d4fd5fe319b62530fc2fd07fad6bf145. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USZ4V1600109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855333d870d2db1e93ad6fc0b378ce14a2ece9b2c483e0454e7bfbded55d81e8. 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/USUM71701986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7afa90bf16defedbe411937c984b34da1e34ad93279908da0918ea81758084. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USUM71701989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f0a168891e1caea33420372f967735b799f8e92435ee5f444d293c9433afd3. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USUM71701990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0777e9ecc2b11c4bd78ecda29274c12ceca311ea6061bb00a329be368a189ae2. 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/USUYG1147661.
Duro Bass (feat. Ma-Less & DJ Blass) [Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe692582c123a6840650fa72ebd5a54e35265078e34075de6e1bf8b6824a9cb51. 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/USZ4V1700165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fe8ba75529bee3af59d9b24cb092ea5f50e19f909dc45a263bb3cb7ebb8f66. 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/USZ4V1700167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c956555a2f344c9a39758d6f42d0e40ab6d7cd33bf83a525f750ad0eaac53d. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USYBL2000377.