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 0x9294e7d92388366a57962012d9519fbc277dfb1b3526cf3e33a2238206a8dc25. 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/1aa2bad1-7d2b-47e6-b5da-dc65fe9e7848.json and https://artists.proofprofile.net/proofs/artist/1aa2bad1-7d2b-47e6-b5da-dc65fe9e7848.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le Llego Donde Sea (feat. Genio & Baby Johnny)
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 0xe858661b7e6a1c3669eb591410965075fe6dc940e7c3122d3f1e596f155f3786. 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/USB271311024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65a49ddb1e33e0b8b8ff98cde49be1a05380b550ca3dae0240d8069d5e7053f. 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/QMV9W1500115.
Playero Greatest Hits Street Mix, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0f4ce5ec8d3530f437b0bb915b61cfe4aef3c66a933b084d097e45119fc441. 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/USDHM1102770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388b7f24f3acdfa8e2b376f6bf0dd4c43a28223fdf9ee6c59a78968f203cb016. 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/USDHM1102798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40187851d0b67b876351863af065a0b8e004a9972ff86eb47ebabe94bc48cfb4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USDHM1206824.
Los Favoritos (feat. Farruko, Ñengo Flow, Ñejo, Alexio, Pusho & Genio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ef385200ac2730fea611bafa373941c8868e222ec79af3f1d228f10374f08f. 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/USB271500928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840329d5eb5f33439196f3b0d245aaf7958a906c7c99d3a2921324c34d44ac26. 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/USB271500942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d70a55688763b694b19c1d7119a03d8938732f6986a5a04c2f8711657d6f02. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QMG271500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd84a1480780a7c29797929782b9f4f7f5076a9ff71c37b65cabdc53e1cbbb05. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/QM6N22162976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0deb1d6abb7979ecf6a92e84813ff715fbecba98fad1c80407cbc9eea985c3e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKPL1978328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631b6ab6a025cabe1a1bc97c52e240ea5a082d782f94d216efd411b11ba14b5a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBKPL2086972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890c389f91275c138dd794ced85c7cd9f07c6771e50ee183c1aa8b47a8c3b225. 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/GBKPL2091075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa42bc881e659bbcb54778765fb3f0dcd7c8d9865b12890306d4fa356c0383f7. 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/GBKPL2096424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f84d11ecdd2f787132a441ed305d5b5767c82e3294db88c4f847ad42a6309d. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBKPL2010379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d73d7fb0d66e159f436f819d588b4732efd660d72036eb98c775f2b54551a6e. 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/GBKPL2022880.