Białek may refer to: Białek, Łódź Voivodeship , a mountain in the Polish part of Śnieżnik Mountains Białek (surname)
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 0x0ab3a1251cf106312350211117933b80d1e8cd43d78881dd531f6911f2ca5636. 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/71e84678-4311-451b-9948-df68a93fadab.json and https://artists.proofprofile.net/proofs/artist/71e84678-4311-451b-9948-df68a93fadab.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 0x1ffdcd8cb8839e9b7eeb5a14e2ca46b90b28df0ae22223a9cb40327100876944. 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/PLF242007209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffdcd8cb8839e9b7eeb5a14e2ca46b90b28df0ae22223a9cb40327100876944. 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/PLF242007209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6af8f61fff14f663503f92196ca97ec2e4574609b48f767760be7c21b6d907. 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/PLF242107606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516eadb0edbcebe68a6f95e87d70e2b01ff7d7708597a12fe4799e2bc5f18180. 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/PLF242006919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5c30e7ce58fe109168690d7f4e5fdea464da7fcbea14a67951d9a0e80ba7ba. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/PLF242107612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3a2a14ae1c487789e636137a659fb4bbcd6dc73ce32b4e505228228dea59a8. 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/FR59R2132933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55618ab7cc1a1daa59c63d16582ce3a0f411beef1fcd7070c51c54b7a11f8af0. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FR59R2132934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756016397246f8db4237ef82fd84bf893f2594e01cf4fa73e3f4c5ec2406d5e1. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/FR59R2132935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520c6cb7c691c0cd43b1e68d9e3576e11e63045d7792d166c7b822b6a3fe1eb2. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/PLF242007443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c29465f5f9ca2495cebba03c083af940fd5dcf3bc8438495016ccfbc7bdaba. 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/PLF242007411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6b772d88aef1b9bac88d3f2c4aefe485755c11e890ecb30c276b03004e23e4. 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/FRS182122264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57f3621d508018135fa07dfac904321a5e53728626c3fcb9b783ff3ac715c35. 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/PLB382400520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651bc1768a26762615b2263e8f4f606c42d778ad5164f7a84d8a9d6466942a72. 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/PL70D2300322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a96dfd61d7bc672bf5490185535ad446a0991b73994b8aaf7b7366a6175a66. 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/PL70D1900183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57f3621d508018135fa07dfac904321a5e53728626c3fcb9b783ff3ac715c35. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/PLB382400520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651bc1768a26762615b2263e8f4f606c42d778ad5164f7a84d8a9d6466942a72. 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/PL70D2300322.