The daiquiri (; ) is a cocktail whose main ingredients are rum, citrus juice (typically lime juice), and sugar or other sweetener. The daiquiri is one of the six basic drinks listed in David A. Emb
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 0xf15dc43d8c759606c191d28a03cd130901231d07231bc4697a0eead85bdbbd30. 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/d97825f0-0825-42ab-85a2-5dd39c2cee83.json and https://artists.proofprofile.net/proofs/artist/d97825f0-0825-42ab-85a2-5dd39c2cee83.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 0x73f696bf3f79eccf47857bc36c9aa8fcf9f6fb492dcabe723008871a5e0e876f. 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/TCAEU2036728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989f925c5309daf6ca36c7898770f787d62dbcb7af8600b6a0b9d389aac59470. 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/TCAEU2036751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd726440a51e32588dc9c9ef96a12243c8352e0c455716a623ef26b12791fffc6. 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/QMAAK1591291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6666455144219c6c07d4038fa446ff1e28cab1a0531f5f66e14ba2e3869a8458. 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/QMAAK1591297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc39e3d1c9882221f19a068e9fe322952aaa89db399d407b42b0f9ef375f6948. 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/QMAAK1591298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1281e05ff69007a86521b20e57e10e358104a131b56a709ad5d9fae32a5327a2. 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/QMAAK1591299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e49f765db936ed0e12cfea54bb07a6787f989f34dcf8ad6c606d22442a8b8f4. 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/QMAAK1591301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f971c8cc553650544d9dd041a4945d88d91aad2beb47824403fed66a9c961a4. 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/VED049201046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc938359a12d5eaf4bf59fde97f23be41c8e803c367ad8357d185e268967a2982. 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/VED049201048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51190d14082a13ce4aec3b8d54bc706bf53a5793dbce22361024c317a56a5503. 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/VED049201049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2c5bf074afdac07f4795f664709931b10b674abf3a9809429218ac278f089e. 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/VED049201053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51190d14082a13ce4aec3b8d54bc706bf53a5793dbce22361024c317a56a5503. 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/VED049201049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109b6413481ee869419702bebf81ae3beff2e9309714e8fd9505d2316a896753. 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/VED049201485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc438af878c9aa3b0da86cd7b62babad9b26ebffce46e45bd8825082f819d9f76. 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/VED049201486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fdf85fcf53bb8fa50a0aa1c321b74ac7a13a8317b17955b31d5bcc2131aea9. 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/VED049201487.
Tribute Of The Year - A Tribute To Faith No More
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6d954f1b65f69e1406a9a8ff47910cecd03711e02b5fea4fd56d90a3161971. 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/QMFMG1507018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5f5a3a01cdc0dc499ec645a01ef0b78239660ea9bf854b8274b7222fca27df. 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/QMFMG1507021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92df5ec9d218e400a2ad518c96f691c074f25f257ab3ac17f168662608d7efc1. 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/VED040800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f01fb84b5445007b038bb3d88c00d73fa33c6dc7785529824bfa7cb292dcc1. 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/VED049201110.