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 0x0d5f607a623387cf05ffd541fdd1021df1e583bbe162f1094754efcbcb6a75fa. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54aa47e0-76f0-4efa-809b-1542e368daed.json and https://artists.proofprofile.net/proofs/artist/54aa47e0-76f0-4efa-809b-1542e368daed.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 0xfc70cbfab09621bcecc40933d567982221f773dab40ac667754f9bf9179a499d. 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/PLA380609202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c01669aab99794153837abd7d6c401867aea0f55611789f80f1c8389ae6bab6. 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/PLA380609205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09b78bc72b9a5c43032608f75c826308bab3cedea2093bb531857a224c27502. 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/PLA380609206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cb1143216331e4486158da5d636c90c0529db4df9146380f0dc63c777911c0. 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/PLA380609207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eec9cdf4789c26b5359d528b72b6a677510cb9098fed6814410c136060eb0ab. 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/PLA380609208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177cfee5c946596248de7b004beb218836eb6a6616d8db8667db611801954026. 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/PLA380609209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e3738444d5828b377d01109fd949a19d6ec7a845f184a9261a3231d54e022c. 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/PLA380609210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf4880bb6cca7519715dbf6088f6f79d3514924db7952ad8995048f915c620e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PLA380609213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc746a07a3963c27a04719d9872b2f132e15192713369c7fb744de5164a92ad27. 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/PLA380609214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a450d3c1c21552c74b086e0f2a63364a9ab99939b5ef446fef0f7c9031d4b07. 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/PLA380609215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d32558d6f33c5d9fff92ef5ef26dad3bd525f6d5e75e869c8ae2445e1de5c9. 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/PLA380609217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3802802ae7835f47a1466f06b3833c732d3b6e87695461c75725e75a45b6cf3. 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/PLA380609218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad5c3b01770b8762fcf2ae78cbdfc34904e523cd3625ede7a71aa9288e94843. 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/PLA380609220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e3da6cb202a0104713e1460e0420bff05cc5ab7f57e52a0b28737becf30c6a. 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/PLA380609221.
Chcialbym tu (feat. Sokół & Marysia Starosta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa498f20741bbcfab838d38c8a1a2e88e1177273eed0a45bdd0362a286679dfd5. 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/PLB380900193.