Pink Freud is a Polish jazz band set up in Gdańsk in 1998 led by Wojtek Mazolewski. Current members – bass guitar, double bass, loop sampler Karol Gola – saxophone Adam Milwiw-Baron – trumpet,
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 0xc1b0f5ddf10446548fb1b525285f6f79b5bb019e1bcea957d92c6084f317d3a8. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7eac2a80-fae9-4865-8159-a565f0892ca1.json and https://artists.proofprofile.net/proofs/artist/7eac2a80-fae9-4865-8159-a565f0892ca1.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 0x5d390bd3609e48eca9b4bd0864beef7d0049bb9bdc83347294f74a3687bc98c0. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/PLUM71200522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b68f6f60d2b4d16098185c87b0984ff42d90a43e28a67c445d23a441edee7c. 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/PLUM71200523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57f3ba86844fadf6b0fbb94f1b4e864749123287876b37e860d51f0443bffec. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/PLB822000572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a6366bef28ce0ababe0b4f130c027f3cdc9f96ffdabfbb71180be275e86891. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/PLB822000573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4254de26727660f5d56f54fe36de81ef52a74fd2793baeb74ea354e18fda80ae. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/PLB822000575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc549edc11a7eaaa1bcaf7520d704cc3e309526fd93ea89d2de2957b416bdc70b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/PLB822000579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379133dda4b9c838a78f11e425139f1dfc4f3ffd3126d7ff3b609add1c87d250. 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/PLB822000580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8c86c8487cb48ab43fccd5941930c96b490d10e24ffca21cd2ad44bea8a3f3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/PL42G2500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaf776cd6853840bc6aa4b7be4e2e351dc967c6bfa09d8b0d714dc6ca6a2316. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PL42G2500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67b18af11af0cd50acf6494bcec98688eb6a20a09c9a9014bbf1400a72db4cd. 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/PLA391146109.
Come As You Are / Dziwny Jest Ten Kraj - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d100bba2e91c85e2de8cc4aebcca6675a8c027d03ad959b1cc803b92e9e5d5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PLA391145905.
Ta Zabawa Nie Jest Dla Dziewczynek - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092df01684d952906b36308e11b54498ae5b4d5ced3f09bd32ce87002c162716. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/PLA391146108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6a8e99cc38be791e95834022625cb006b0c9870eda5e368874af10f1387a5b. 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/PLA391145906.
Mademoiselle madera / Nie pytaj mnie - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ea65b1a434067a0c1b21b3075a8850e443c4ffc0bf2833ecc77385a107f351. 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/PLA391715415.