Stefan Wesołowski is a Polish composer, producer. He is currently working with an American record label Important Records, French label Ici, d'ailleurs... and a British publisher Mute Song. His work c
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 0x7c9f852af0a1eb8423d5112aa688b63c7d1067dfc7a7620c7098e94b5466677c. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e560908-2338-4fcf-a197-b497013067e4.json and https://artists.proofprofile.net/proofs/artist/4e560908-2338-4fcf-a197-b497013067e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Love Express: The Disappearance of Walerian Borowczyk (HBO Original Documentary Soundtrack)
Wolf (Original Motion Picture Soundtrack)
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 0x1d54313aa1acc461e5511664c7f4a03008d86c911115794b4d7e92c5741c195e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USQ4E2101144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905768f49f704729485cefc3b8201a51802ea6765a3ceeb09775617d8573266f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USQ4E2101145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fbde8b5bbde99768bf3bbb797fa9c42ae1d5d6c83f395b9aaf3ac3247fe9b6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USQ4E2101148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ad720e7c1e9d555463dda7cebb74136b892844562e81a5e973a2ca9dfa45a3. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USQ4E2101151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8389233d35422bc8929a2f7db05515bb3db83a9e0335d9eafebff25c85ec05. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USQ4E2101152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd9d59aa527a7c104a3c3c3fdc4f45bffc61341daecae0e1fa2b5116a0d74a6. 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/USQ4E2101158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19015801dd3cc3f792ce235b4fc7fb8cfb376855aa71cd629b2f08a2f2ee0fff. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/GBVNV2500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155f1db2c45bf253b2670d6fe3616a7af56cc225465426dde6ec06617f83d15f. 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/GBVNV2500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25afe6771284dbf99533ca0d0e7150b9aee98bfec20b1d57b3f76348de85527. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/GBVNV2500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39130f287484249d0a117e8ecc562cf1c4413b046f76baeafa04819150010c5d. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/GBVNV2500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64956d3c667e387bf8556d460ca90f224fd5a5690a707638a4ee7598a9a133fd. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBVNV2500064.
Orkiestra Symfoniczna Filharmonii w Szczecinie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8fe4b320901b0268c90be69d85bcbb624a8119ad142ebba70b9c147ecac998. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/PL98H2305001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e658b89f58bf466fa3d1a9b34afa7f9abe2af7b468e106ed75eb5ea59795a2d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/PL98H2305002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6543f931471e433bf84f0618605575518cc2a37b01c8f0d7d6e442bb36b624bb. 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/PL98H2305003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fb7e55d714865f9e2669e67b89c21d128a77664c4231ee5f34f4e3bf59e431. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/PL98H2305004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02aeadb1f7d503d10d1c5f440538d8998858a5af04b3c8ed43faebe72e8f0fa. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/PL98H2305005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef43422586df63b7e75556aab5eb8dbc7152c20ea44500285e416f35b5ff907. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/PL98H2305006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de7f8cff9684f3479f80e2942bed637a21b561dc7d486c2ac618d0a9d79606d. 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/PL98H2305007.