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 0x082bd9bc6a6900150d53bd9d1ea39d4de135f7bd853e01789a168e517a478372. 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/dfd544d0-4808-4a83-8138-0e0b79467bb1.json and https://artists.proofprofile.net/proofs/artist/dfd544d0-4808-4a83-8138-0e0b79467bb1.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 0xc5abaf9ee13b10721ce614343e9c9e2e945e4ab9da90feb7b21f6c16a8673aa8. 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/ZZOPM2239895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fae9ad2987999f2745a6602ea368678b8fd2a2717e5c2399fd408c1be006d9. 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/BK4DA2305678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5abaf9ee13b10721ce614343e9c9e2e945e4ab9da90feb7b21f6c16a8673aa8. 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/ZZOPM2239895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fe8c7499a359cb944eedc37bcc814c757433b9299c660ca17e766730d8360a. 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/USASN1701062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd733e57cee4de199cbb4281581edc53daa5f716574c78f6ec4b8122a469946c7. 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/USASN1800293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe358ad134e0333e1d2c9f6a9683c77b17aa341672a62ef66a31a730686e723. 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/BK4DA2302160.
Hasta La Madrugada (Remix) [feat. Chiko Swagg & Papi WIlo]
Boy Wonder Presents Chosen Few Urbano Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04b2353918d31c12306d8872f8391ede091e47242b66775ac2c6d43d70ab618. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USASN1502494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22e46200300b3fdfc724ac80edf833fd3c52cefd4f546bfadeaab56d8fd3e67. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QMDA71867525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726652f2e81674f1937d1a2d6339eb9dc88266146da87061108cdf70500c784c. 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/USDXS2006416.
Hasta la Madrugada (Remix) [feat. Papi Wilo]
Reggaeton All Stars: The Best Of Latin Urban Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04b2353918d31c12306d8872f8391ede091e47242b66775ac2c6d43d70ab618. 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/USASN1502494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21459a7e17e8f968c8146025e718fe98ac2cb508bf53d83dae7eedc1fd76ee39. 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/US7VG1500302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be4fe73cd9b7f48378967c83492ce853755ad61796d4c4ce12e70e378a4f6f0. 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/US7VG1500309.
En mode Kizomba Zouk Love, Vol. 3 : The Best of Kizomba Zouk Love Playlist !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe174d4424be3d9bdf3bb1b3af4e76965140fcd30ccc5ebe34358e299065b060. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FR6F31715790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8710a5788d39d5dba6f8021ee9fbdff47a51f7c2ea5b4940883cbae4dfaafe64. 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/TCACY1776276.
Reggaeton All Stars 2017: The Best Of Latin Urban Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8559f35ce25e58e7faf7bb9432bad21c1a877b156a5636551f8da8726f7ca7dc. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USASN1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1a0368aba57d74ff49e8bffcd9ad8162533ebdd60173410c82d0cb85d1a9ad. 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/USDXS1500156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca786c1cd81997750ed18a58d4f60986c8fadd0587f56f047112a47ce5e61ba7. 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/USDXS1500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c1e79dc43b1c86a8c9739321096771e87e3fe185041d96ce3c0da06dc094fe. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USQY51753022.