Polak is the Polish noun for a Pole (also in several other Slavic languages). It is also a surname. In 2020 there were over 21,500 persons with the surname in Poland."Wójcik, Kamiński i...? Oto najpop
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 0xa246aa19f4efa9f4be506fbe40fbfd80c35fa1ad9f00c679c297b731a0099974. 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/4f805469-e24f-482e-bcbc-a95e7f8f9488.json and https://artists.proofprofile.net/proofs/artist/4f805469-e24f-482e-bcbc-a95e7f8f9488.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 0x3a509aab3a4016dcf0153b221fb66024579ba5f1412e06b117952cefe4e9fc83. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZ5AB2436054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f461f3552c36009a0d61f2e2cfb15dcc4431a8914b522634ef4414db2bab687. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZMZ92451743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f64c3d02492da6de6ffae2e7d354d3b6a138d396339097c0b15c44d59b8263. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZMZ92451748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eeab6a0b9550a80b696f92ebccda5eba89eee67d53a09fbe2dc8c25da9f2117. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/BKQ1N2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6ff315794ae04460bb1e9f94b70b3e2aa3478796340573687f974afc74a0fc. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/BKQ1N2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd9f74f09aec11b129b967908576daa17c726b3dcb20918868d98c266a1be9e. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/BKQ1N2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597ffa15ff3151a4316579d1308ca59bd4ceac71bcce3fe8a593915b0e38051a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/BKQ1N2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84449ecf40f02207977054ce162f26f6d8dac0af9bdb263075ba90ea47c7fa66. 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/BKQ1N2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b30a481c093a4c823b98115ed4385fb901b2cdbedb24676125c1a057a51b476. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/BKQ1N2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde032ac1c9b71c36ccc22ce382060a0f05204eb786c83475ceaf2b077754054. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BKQ1N2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf64e170ed09ef7387bb6ae745ccfe9d16caedd1c1af1f7da6e3d6c832076f2a. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/BKQ1N2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021a418ca62ed2ae234fdc2c5a1d5cea2e473bbd16551bb325d71b584839ed30. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/BKQ1N2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54347ea4321591ef76b454aea91ac2845ade8feef004e38ef619b279c6ef3c21. 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/QZW9L2444551.
Mais do que eu sonhei, menos do que mereço.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e88ce588a6e5611aa0ab9bdf246efed75ec7ec988128a4c2343ccbab7425807. 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/BKQ1N2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6c96e65d76e3877649fc4fff5bc145882f972b959130fe2480ff88f4b14cf1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BKQ1N2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571a16dc7a22f359b3a3dfbf3258d590d8c2aabe7c54ae6d1679f8f0cf4f0474. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BKQ1N2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650c65a5b43bea55e9fe0a99d6df47bd201fa557f9cf98aeb0b8494e44d951fb. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/BKQ1N2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd512e0495e77ce47c734b8cfb621273ca7e3ca0e907c2b93a3d7ed822801cd7d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BKQ1N2500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5248c01b1125c1515659f988104caadc4487bb8891fb8590d465dc2d5bdff4d. 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/BKQ1N2500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740b83ea9ae30f11b390c51a996390b50cf61716a4e232194b03abdc1e131b2b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BKQ1N2500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf274395240ddc90b5fde4fb7ea76a71dfbeeeffbbaec35339196d17b7f0640. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BKQ1N2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce48dd25bcb15c73dd6c6fb76a897791febc1e0c6ceeb679b043e5b0f3823d1. 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/BKQ1N2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd404f2fa3381795280eb17236a5436c00b4d136a893452d6288081e0af95f464. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BKQ1N2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf909af2ecd79ee5773011ed135a5d607c0d81f83ce8f2a6bb7dbe9536883210e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/CAGOO2553743.
Não sei se cês queriam, mas eu sei que eu precisava
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04e16d5845e61c8222574b7f26a1753ec95d0c1f1d9bf9716baa049a4c624b9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BKQ1N2500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab80125c807d1814ed99fd3be9375e0fdd8aed299aca098d2ade822d17487e5. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BKQ1N2500023.