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 0x786f59c233ad618342ab99f5b89d750f07827f94b2066ae3c57db3fe448007fd. 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/9a4e29fc-b6de-41bb-a1fe-9f5f3cecec5f.json and https://artists.proofprofile.net/proofs/artist/9a4e29fc-b6de-41bb-a1fe-9f5f3cecec5f.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 0x504c0e384f151dca97b5581c34a1493b2f582f18ffa1bc3c8b1557922926f933. 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/USLZJ1962152.
En bûcca y câttura (feat. Vera Fauna) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4082e0d5b40893e83a09100b06d78f777fbf6bbec3b6199168c2f975c71217. 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/ES09S2000278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a1611b9abadc3d2cd42403ddc0e10862f4011a3cb10627bac59488e3b75285. 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/ES09S2000305.
Çambra der Huebê Çanto (feat. Kurt Savoy)
Çambra der Huebê Çanto - Parquesvr Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1494357d0fe8ab17e0a34b86ea64c061877e820adba07f469c82df454030ee95. 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/ZZOPM2230462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7999502a0bf98618e98f86a1430d70ed60116fa4352ea44adca88a8fe03baf1. 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/BK4DA2301231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ee8332947cbb1383a7f303d61bca7e7da6b3d6805e004c88d31b956ab1a6c9. 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/BK4DA2301233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c7e3215b5ed3ec7154c9eb91a10f703ea1a47a4edd108bc989b4ea13783012. 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/BK4DA2301234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacad0f3d7994aebb286757df1d1f798c8a99aa2c93ffe590054372b6098fd55d. 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/BK4DA2301235.
ÇEGAORÂ (feat. Ángeles Rusó, Paula Margo & Anaisa García)
ANDALUÇÊ YORÁ {HIEROFANÍA DE LOS MORISCOS Y EL GRAN EXPOLIO}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d9e0c8da1180281308a883371df40e15e32f4885ee39758ba63c092101209f. 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/BK4DA2323981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd4333757966fa08947296653df0570224cca6184cb3cf45f103000c6ec5954. 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/BK4DA2320799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715fa1bcb4eecb9eb25a142ce89cb3a15c68d5608990c61e026605916ed202c8. 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/BK4DA2402127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2484180fc77cd184fd1ac47fca01e38496ed8991a07792b2b8b2a25ff75412. 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/BK4DA2402133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0d2198e198fb87a1956abaf78a546abcbf7521b6c150be7d5ea8d9e29be7ec. 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/BK4DA2402134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb029a8671386392c99a5f48c7d083d68519b0dcd4e52f9f5ce49624297cfe4df. 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/BK4DA2402124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d589294dc9128028e3e540dd3d0a65ab75b8fa3e35e38095cf9f3d4d536afb. 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/BK4DA2402135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9934b668a4ca5e06a30385529d9ee9089bd818200f1c4cfcd23fb27ffeb1496. 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/BK4DA2402136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2271898fed68bc5e78e1ccb793f423064dc4983383956e13bc2919566ff91006. 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/BK4DA2402137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd8e350c00f5043c05fbe85d3adcfdb40dbd543ad491ce6c9ef3df52e25c2c2. 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/BK4DA2402139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52b34f7c2e72856a881958b7879d7c1f39b211995c732ee078f86fc154f2515. 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/BK4DA2402140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c0c2bc66a4a21cd94a7df34c5fa0a061f06c0ec87e7216a723bfd4a21f9787. 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/BK4DA2430676.