Corner Stone Cues (CSC) is a label and music production house based in Los Angeles. It is best known for the debut release and the title song "Requiem for a Tower" featured in The Lord of the Rings: T
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 0x3c31ac4fcc3de1e5233efd3936facbebe88b2e78110543411683b0f601d121c2. 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/6c9068d3-d5d4-4772-8468-17f30f60392e.json and https://artists.proofprofile.net/proofs/artist/6c9068d3-d5d4-4772-8468-17f30f60392e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Corner Stone Cues Presents: Requiem For A Tower
Corner Stone Cues Presents: Requiem For A Tower Two Towers Trailer Mix Remastered
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 0x52a1d075bdd836f1f86b8ef9d1d0f5f295c2c9fe1d7f8633a1d2b0b8f6dae30d. 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/TCABF1236379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276f20762ef47e1b34d6e84eb6574ea1e4e0ccf3a622f2f7a35c1335836addca. 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/TCABF1236383.
In Situ (feat. Daniel Law Heath, Ramin Torkian, Juliette Dwyer & Emmellda Beech)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de05a420839ad0438b00665af82d5170f264dcfa4ce95571ed2ab8ef6407855. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/TCABF1236416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c2801c7b03019565ed38a62e9cf410ffbb31370d2e89e79f1d091b1313aac1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/TCABF1236439.
Shot (feat. Daniel Law Heath & Donal Lee Finn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eda870dac3bf3cbc34c9875e9c89b8b3033cd946cc68236e5476c6f5d950907. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/TCABF1236442.
Thumper (feat. Daniel Law Heath & Michael Dale Simon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147c65f8f5e17b336b9cb26e3c3936cd5b5b33343c2893d02b1c9a0baac79c8a. 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/TCABF1236443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf76916e66cbe367e2254282ba73778f4536877ac42bde5f624a469bb5e4c56. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCABF1236444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec1e28da3a088a28041c25b70851685fe5415bfcb6d55bd3dc0f5b1effec9de. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCABF1236446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad372cdc18ded4733532be70a045e1536efb23fe5c19bcfd0d4b4e811907199. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCABF1236447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2be809df0e57cffe33eb3f1fc5450968a6e26aa8748184895fe8407d1e028a. 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/TCABF1236448.
What If (feat. Rinat Arinos & Sean Hurwitz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d2e17c108038e075e0c698e9ff1bfc84b141bca4f179037fd4a7fdcea946d6. 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/TCABF1236451.
Lex (feat. Rinat Arinos, Rae Di Leo & Daniel Law Heath)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496dcc990502304cebae4ff48e0809c741995a5e53f95a9a1365ea897d420542. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TCABF1236457.
Aston Martin (feat. Zachary Meyers & Daniel Law Heath)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176c221eace9c6e7121f65619105134c116146f702ae6b477a83e3c84ce96419. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/TCABF1236459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2cc36cf27de69c86a52ad6dc3beee05b997524a8de23c8cb6d3e6415ac95cd. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/TCABF1236465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55689e62409c3faeeb96e005a789337c59916a88d7c8b2cdd36b787b08753283. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZN882535794.
Ten Years Kashmir Mvt. I (Ten Years Gone) [feat. Anna Phoebe, Ben Mark, Brain & Jennifer Hammond]
Corner Stone Cues Presents: Eton Path II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd552eb3b237b7f2269e51c07de96cf81304c261c94c17761ac24e8082cf82d49. 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/CAN110800057.
Ten Years Kashmir Mvt. II (Kashmir) Sports Version (feat. Damian Marley, Daniel J Nielsen & Peter Scaturro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153feee063a833f2eefaf58a1e7dd70253b6beb033674faf7cdcaec04e992e00. 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/CAN110800058.
Ten Years Kashmir Mv. I ( Ten Years Gone_orch / Film Perc Mix) [feat. Jennifer Hammond, Daniel J Nielsen & Anna Phoebe]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa373fc87c9a6815e4da40523c790ee8027c4311cccc2e5b693d495f98e21ca0. 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/CAN110800064.
Ten Years Kashmir Mvt. II (Kashmir_orch / Film Perc Mix) [feat. Daniel J Nielsen & Peter Scaturro]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24a6a0bf5279a341d0ef97c57515112f7935f8bf1538744af98cbb860935b5d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/CAN110800065.
Ten Years Kashmir Mvt. I (Ten Years Gone_orch / Choir / Film Perc Mix) [feat. Jennifer Hammond & Daniel J Nielsen]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714e08382267e9614ac5e9da9d41dc9e13a11e301482a99473139ca5f1a5241f. 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/CAN110800066.
Ten Years Kashmir Mvt. II (Kashmir Trailer Version_orch / Choir / Film Perc Mix) [feat. Daniel J Nielsen, Peter Scaturro & Nathan D Duvall]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57aaa759b96e866831e00c4c3da1e1b8f9f90b5349d9007f4b5f7fe53f95fd0e. 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/CAN110800067.
Stand Against (feat. Mervin Mathew Pillai & Daniel Law Heath)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaed9d7ca6f692b2f531fdcfd3fed90e61ea9da364a7befe624c54ad8fec44f. 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/TCABW1475549.
Requiem for a Tower Mvt. II (feat. Veigar Margeirsson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c633d1ab8588ee95e06a4e729a0b0091d56815491f91d3c4af2afafe825d99. 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/CAN110601914.
Requiem for a Tower Mvt. III (feat. Simone Benyacar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75b4e72476d320938d81c84b42b70e0680b2bbc6a2688e09700448c0f0ef47d. 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/CAN110601915.
Requiem for a Tower Mvt. IV (feat. Daniel J Nielsen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294102edf3d36127e0e029fa3c50d9ee06d7cb623aa6357401bde542e5ac4d90. 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/CAN110601916.