Samuel Sim is a British composer, record producer, musician and songwriter. His work spans concert music, recordings, arrangements and film and television scores. He writes in full orchestral as well
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 0xa9542e4d55defdb871eab9a930ac4a196af8907c4d21677db7d9ac9d3c2d70eb. 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/cb74c272-f8d0-447a-9a66-50e215fe6c04.json and https://artists.proofprofile.net/proofs/artist/cb74c272-f8d0-447a-9a66-50e215fe6c04.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 0x44f7130bded227cd51f13a24b7b2a98bcc7494b3cc5d4718ffc75dce3a98f252. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZHN71939296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ca8e944c8d73b43bc0477be80ef98eb419a02dc62aa7c64d0afabc29eac937. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHN71939297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eb491b68460e376fe1f1d6aec63b8991809c1270a2d351d2b7b5cf696c4cd5. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZHN71939298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65d9d6de1540be0452f21618e230a1fe8556aa4291659306c13d5eab845709d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN71939299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd527b5dc543180b05f37331b30b6202eeeca66b034e013a15bac1b0bb0ba6e7d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZHN71939300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd711533e7878edf6a1b5b042d09fd388cc08634aa32cd518a239756608674cd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN71939301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82875499ccb08e504552fc39ddfd6210dd8558cad7b34654a0769ce018f9d16. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZHN71939304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb2b36d49de699e6860a76110e0cfb6e3ec4778a2b9c8873c0efed04bfae60e. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZHN71939305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92041bb537d0b4b65fbed63220ba9a15ce7671f66eb60478131750381f179506. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN71939306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f169b199b862b6f2c39077973b43895ec7f1859525eb8703c5d3ba61274e028. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZHN71939310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e281db3552a19d11843ee06ad0e6f9c231ad1da69f079a3d42a32bb4a1a32d. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZHN71939311.
Emma (Music from the BBC Television Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537ef760547c7d1d1c7c2f911e2041d6415bc91b838aef975c24249047e1db09. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/UST8K1400086.
Home Fires (Music from the Television Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752409b66768ae0b54a449c2d82903ffb54a19091cb3330f1a5795dba8d79896. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBARL1600421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b425a37af23ff70dffe99b3c0a18cba8e69859553b8a3b7ef7f0e5c5b97b86. 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/GBARL1600422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c134e75ccc6c946868376c052c4d338116708543d7a0c71b46dd94dda50750. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GBARL1600431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3415d05b13f4102970dfd465e852161f33a4af0e86e612c868aa7b215ebf8c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/GBARL1600433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca1100b320e6d4050ca667480b2ebf10c3ea5544c5b2e5bfd0f3f9ddcd3103f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBARL1600435.
On a Knife Edge (Original Motion Picture Soundtrack)
Mad Dogs (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6776b78c1f32362ff1efdf533caa21d730387a393ec6be206779ed2eb3acd7d2. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/UKWJG2100092.
A Cruel Love: The Ruth Ellis Story (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620151ab7b2b4fe546dd1e38a3a3d9c6aef1f9052cb785f134948d0727200aad. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBAJC2500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a340cc914c42c5161875c5ad85579c0e9286627ae376970cf502de7669b94ba. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBAJC2500164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f04f40d85bf9ae0ee89f11c95fc53d1e8eac0658ddf3809caac5ffc679d3f24. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/GBAJC2500166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f43c3170cc0c36b19b815dc92c90408819ad44b5de6b827c12e5f030179f21. 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/GBAJC2500167.