thumb|Tambuco on stage in 2003 Tambuco is a Mexican contemporary classical percussion group which has been nominated three times for awards including Best Classical Album. It was founded in 1993. The
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 0xeae59f2682aec0aea2f1fd24bba1fe5ae6cd0ec49e045f89e71e02ee5652a8d9. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d5c4adb-285a-4a74-a34a-824d424fcdd7.json and https://artists.proofprofile.net/proofs/artist/3d5c4adb-285a-4a74-a34a-824d424fcdd7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chavez, C.: Xochipilli / La Hija De Colquide Suite / Tambuco / Energia / Toccata
Chavez, C.: Chamber Music (Complete), Vol. 3 (Southwest Chamber Music)
リカルド・ガヤルド（パーカッション）
ラウル・トゥドン（パーカッション）
アルフレド・ブリンガス（パーカッション）
ミゲル・ゴンザレス（パーカッション）
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 0x7fb002b951b78ec28bb6b2206d933bf984004cbcc009f8c7b825ddddb113ccd7. 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/JPF691800101.
Spectre (Original Motion Picture Soundtrack)
Los Muertos Vivos Estan - From “Spectre” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d577b603386001f988f554b872ae87b29c00fa65aa01465b855a2bca1c6fe1f. 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/GBUM71506576.
Vauxhall Bridge - From “Spectre” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86ede53d4b7e9e393d6eed40c10267743458f017519df9b5ff0cd5ef7da256a. 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/GBUM71506838.
The Eternal City - From “Spectre” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28828e044e139909e073dc671fe844303a75586132f65c6c289d43e6e744f976. 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/GBUM71506839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d023dcd54a0543a6f2d2c04b75b947e1ff1c46fdf9fbb1b1b16488d13fbb50a. 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/GBUM71506840.
A Place Without Mercy - From “Spectre” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe602a09f690e09ae6ea35786deca8616d0424abe0fcc775342791e6a4b49231a. 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/GBUM71506841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9182b21f0ecd59da570a7c5042910336c750f17b854d26de291bb7188eb0d0. 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/GBUM71506842.
Crows Klinik - From “Spectre” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6c206de5000f20195689fb76ff2537afc2fee6e214c0b17affbaa5b1227d86. 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/GBUM71506843.
The Pale King - From “Spectre” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cf1b75c1b90d3c841c302fdb2685ceb56169a5a63f847c826cb4a75f3718e2. 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/GBUM71506844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe340aad3787544b48e924e73844b75457bcd5c22aeee4b5204f58b5c9c001e99. 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/GBUM71506845.
Kite In A Hurricane - From “Spectre” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c4cbad496d4aa4c9a3ac1869cc930af54b1c96379bc07b60045097fb136e98. 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/GBUM71506837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba3023174d5c419aad7cde1507fbd21b0b7d1f181029eb14f86cea06d258b4f. 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/GBUM71506846.
L' Americain - From “Spectre” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cd3084fc2b280bd4c452db1c5ec8961e0a607a6feca15d5b4d9f3132f74116. 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/GBUM71506847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52442bd733eee8ca8fbff6d8e7d013c8fa48ca76dd7a5e1b708bf9aadcff45cb. 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/GBUM71506848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa63845cc44e48d0c9ec149cfe3a274a64d63c1f52386cb00acfc6f8bb25812. 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/GBUM71506849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e347cbb88d65ea3ab7309670eee873b3df63ca3507314032286a3380d464e5. 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/GBUM71506850.
Silver Wraith - From “Spectre” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbee7501d3a0db87ad0aab09ba88269dc3cbd68f7eacc52bb198ae43e563dbd4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBUM71506851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764efcba8718a6075dd913eb33495436e8ca3bd1b653d28f489b11465011cb28. 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/GBUM71506852.
Day Of The Dead - From “Spectre” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff935f2f0caa6d33dd9ca57aae16f1c7ceffc105fbebc6d411a4d28a92148e59. 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/GBUM71506853.
Tempus Fugit - From “Spectre” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fc838f336bc0b04148cf15ef6bf22dbc8c046da720cbc8bf5cfe9761348541. 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/GBUM71506854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff715a1e4122808658fb533f69c17eb03fefc53336c655169df1ed20a60beeed. 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/GBUM71506855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e05095f96e7de1678ceba454517127b28ede2274d4d2025e485166c846580f. 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/GBUM71506856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0c03658df0e061ae86bc979b2c4484170bf99652d5a5f8ed9eb235f45c7383. 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/GBUM71506857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89717059e052472cc076489235c8e3c8ebde42619638a0744fbc690186ffd829. 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/GBUM71506858.
Westminster Bridge - From “Spectre” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2c443447176ecca0ab4db7788ddf6fc8a62551774bd0c034c6b74199e20657. 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/GBUM71506859.
Out Of Bullets - From “Spectre” Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9f96cd9a2bb32f3a409c5cd9a284ccde5f3477f77a2b2df28689d16ace0389. 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/GBUM71506860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0980023cd9458303f5e970be4f3de7e4adc692ce016c7214cf7324a68f05f106. 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/GBUM71506861.