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 0xa3bfb44474124ff554926720319197d78ba7d5e32b3038397a265bf786e7a2e3. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0389d346-6530-421d-885f-f0348327d9de.json and https://artists.proofprofile.net/proofs/artist/0389d346-6530-421d-885f-f0348327d9de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dziekuje za swiat - Piosenki Agnieszki Osieckiej
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 0xc52a36060c4653637fa734026aaf97e6ce232341b80a2b3a0fa910a8f255754c. 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/PLA800994101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c385325bb4d8e5eaa3860893de0897c47994af70cc9c99c32842e0ad48f5119. 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/PLA800994102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e346df1e812aaac282f611f2c5e3b0ec9fbc3e46eabb6dbb522c1020bc80e9. 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/PLA800994103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bb8baa24e98ae84b230fe5f33477dbc7cc569b196411f84a34f470086b1be9. 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/PLA800994104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9714e0f3dad38adfed7bc566fda64040729f45ad52e3ed035b6a21f03d29e9. 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/PLA800994105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe486eb56b367d583d2ad7fe2d38307a5028c5afa0762ccafe5879ec8e86c3c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/PLA800994106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ab6f56486f69bfa2d9618683e5b1795858944f66bef53b5995a38b704bb640. 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/PLA800994107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae875545f8f3b5208e1c2cf7d7d9dda154792e38fb19dcb15ba15f0a3ac09ca. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/PLA800994108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d3b80830453c3353ea82caaf31d835d2617488d98d6a269e78e2e4c58d28dd. 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/PLA800994110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe863ff52e36c520535a3454ea2e5fe5f9d03eafbc18b8f7782df4214d39f1062. 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/PLA800994111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4831f3463d1383c7a8288303a196e19e95377f35418ada711582d90abb03a63f. 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/PLA800994113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9735cc234d758efd7166d4745d6d896f257f7e7f0781e664001317fc0cc64229. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/PLA800994115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc95cd357fbbab85150ec9b433e099e7f972c17500a077dea5ac9db8e5b8a9c. 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/PLA800994117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1771a48eaff2d7b5c68c0ecac32a68ac945191b200bfa5bfe8ee925f1512168b. 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/PLA800994118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874fa1b8adf30a59ada9954827b1ceec7d80b36a76e76a754f6318930650b7e9. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/PLA800994120.
Muzyka Filmowa (Z serialu "Ekstradycja 1")
Muzyka Filmowa (z serialu "Ekstradycja 2")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846e6b29c1872a98ec29d81ebccef280d1280235f6f8a6b6fd744db6f8f7776e. 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/PLB171600240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4ec6b49efec38da833df6a06b9682795c9fa3c1bde17aa488d44f51c132f2f. 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/PLB171600242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1d20b6234effda6f29c90188b4395ee2c8e2419198a1d76aae071a84342b46. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/PLB171600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fb80a744213962ae87741378e9dbde92a87e69978fa0bb409e7fb49c45e5a0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLB171600253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29c1833bfc5e43d12e04e0c331a3fb8e56f629fde5908fedbf7500d457f7971. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/PLB171600255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302eb2c06c07a2215ea25c0ace8c4fb0c1e4dae3ed50bf1dff50b48cde1ce3ca. 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/PLB171600278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f4d4d24352be8fe069ccaaa456c90a509a2b544d879d7083b07f0c4d6eb03a. 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/PLB171101172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76e2e7727ebaf8a4cfcad479115a0a94c7fbe81f187a7ed614b41d63b52acc2. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/PLB171101143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310c5a650c5578c1d6b88dcaf4ea05a2ca79e333cdad1941bdb6ecbb397ec1e9. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/PLB171101155.