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 0x68d39b39bc1db613f51e21dc8b636b040552d0352d0e119adeecbe22e4d4f3a6. 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/64d4eb45-e86e-4dc7-9671-b4c69a2be020.json and https://artists.proofprofile.net/proofs/artist/64d4eb45-e86e-4dc7-9671-b4c69a2be020.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 0xf139683e80140b261017a15848eec48a51d5f27b3358d8439eb32fbdea74a052. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BGA471828235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f9c64d7f2c7b3efd0fe704dbee7f667cddc77fbc8a0f5e6dfe19f3d5b0a4bb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/BGA471828236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d942ce063ead1aee2d513771f149dc8c96e190478f9bc6eca2822489ee626c5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:52Z), 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/BGA471828240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b10d87b6602d405236b9786b5da126d280394498b2f4f39463d68b7229ddc9d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BGA471828241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e59ccb9d5cadd779e0fef6129118d26a57a39d98a183a1327d0469fea98747. 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/BGA471828242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecd1cbf365e0d6ee4c956befaf2f854e308a905cdb5cc1a140143ddd614fa6c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BGA471828243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffdf93ab368b0cbc38f03a10e105431f56a9dfbaf75cd649ac84ceafbe3be79. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BGA471828257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418f017c3e4c143a8e23c5e4310a89f3acbbd663a4adb6d575c0fbe58e8b3bdc. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:46:01Z), 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/BGA471914005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883a44134a5d88f557e3983509fad78b21b7f3287c9085fa2b00848094760976. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BGA471914006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5acd9acc00210e9de321b4087ed7127819b985dd6bd34eb0a52377287c0c183. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BGA471914008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f0f770a2b169cffeeb840dbb99f68542253ed0a6feb86daf627251aa599c5a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:20Z), 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/BGA471914010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a4e148c71eb3b5038abc903fe1d7d1f4fbfeb1ab59f8ba87023ff81c500fd1. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/BGA471914011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87039bbddb4418c7b44ab42d1c2ae6a661cbf6bfb461a5d6eac1edc93410df38. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/BGA471914016.
2023年コーヒーを飲みながら休憩するときの音楽
Sessão de Jazz à Meia-Noite em Copacabana
Nightfall Groove Sessions: Soulful Jazz Music
Notas Jazzísticas na Costa da Renovação Musical
Amor nas Horas Tardias: Caravana de Concentração em Jazzscape
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96303019cb0c7bd681c3b4939dc21ad76c801eb345b8da82ca6d82b3df83e711. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:46:51Z), 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/GBPS84078679.