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 0x1964d0922f6a0b29f7c69a3f62d9e8ced290e53d413b6b52d605cfef1998ed90. 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/8ff571be-77ea-4d40-bb39-651e09d275e1.json and https://artists.proofprofile.net/proofs/artist/8ff571be-77ea-4d40-bb39-651e09d275e1.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 0x7beb2cae2a5ac2299fce22c2d9932206a1c6783c1a9fa23bd6629221a47d74af. 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/QMFMF2346943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c44ca75d9b3f56e938a262eb786f2718ec9d08793421ea9e956fb8e4ec73838. 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/QM4TX2412433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f53531753a180bd46ff9117d2470b49e58fb405f68b10618370fd913293025f. 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/QM6P42365760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeeda5db5e448effe568fa2eecb377cd93f5864c22450ca541626d76510c09b3. 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/QM7282344457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e15cab89b0204cdf7cf7633426a6f554c4ffe3ecf789f13edc703e12f0cafe5. 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/QMBZ92325076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab4831135ba7764e339692158cff24e708bc61435be43e1b1da9aa7623b7a83. 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/QMBZ92311273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297eb888fb9f66b1affde20b65f9393a14cf12f9668fd5838ba8b58abc0d1eb2. 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/QM6MZ2434135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a83d5187406915b236b06a3a6e7b27c993a4af44aa412d3c75e253f57375cfd. 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/QM6MZ2499073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85328277be47715dd9085603a330be04b34b59fce38bfe7ae66d88b11af52072. 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/QM6MZ2433657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf931840d188a6726f730ca8a39b72dc96da07d8e990846535aa8ccd217f0540b. 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/QM7282438127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeeda5db5e448effe568fa2eecb377cd93f5864c22450ca541626d76510c09b3. 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/QM7282344457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e15cab89b0204cdf7cf7633426a6f554c4ffe3ecf789f13edc703e12f0cafe5. 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/QMBZ92325076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab4831135ba7764e339692158cff24e708bc61435be43e1b1da9aa7623b7a83. 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/QMBZ92311273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f53531753a180bd46ff9117d2470b49e58fb405f68b10618370fd913293025f. 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/QM6P42365760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5189ad2ec1b26132e67eb38880a93d2aa78855a91dff068ab6833ee91632247. 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/QMDA72403309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8cbf1ab079605a4ef7527a6e99a3910d073f71497384d1d625d884c4236308. 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/QMBZ92440032.
Cachondos Session #1 (feat. Sebastian Esquivel, Eugenio Esquivel, Tiagz & Los Esquivel)
Cachondos Session #1 (feat. Victor Mendivil, Dani Flow, Tiagz & Los Esquivel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d583108ec9e10bc15315deb18fa8fdf5934d467b273d9fce48b80d86672fd7e. 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/MXA4C2400074.