ABC, abc, or Abc commonly refers to: ABC, the first three letters of the Latin script ABC, abc, or Abc may also refer to: Arts, media, and entertainment Broadcasting American Broadcasting Comp
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 0x02c33ffcaf667b7ad3a10aaf140a786f43fd89e84e1f27f9e3be6cec3f38b56b. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/409e566d-ddd6-4a02-bc9d-6295065b8fc3.json and https://artists.proofprofile.net/proofs/artist/409e566d-ddd6-4a02-bc9d-6295065b8fc3.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 0x1b7d8a495fe5de98ced6069b0bf6b24bbe63ed0cbb2b38a376644be063f4258c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/PLA247013164.
Razem z nami (feat. Halina Frąckowiak, Wojciech Gąssowski, Jerzy Kozłowski)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fef38cbfaf67c25ec7cf4c17ec62cc5fb601e8facce2aff97248a20a21151d. 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/PLA247013637.
Zabiorę cię ze sobą (feat. Halina Frąckowiak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7f36807f9635959650d5b46b3da5b51f7861d6570a310c98a424c9838d0373. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/PLA247013638.
Gdzie jest wczorajszy dzień (feat. Halina Frąckowiak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb468915670487c5105477f0ccbd0c57654ff96ba9249585bc039df56f832c999. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/PLA247013639.
Nie chodź do domu (feat. Wojciech Gąssowski)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0ef5557d5fc9d2b66b800143d202ee5899c7169da0c46c4a322f3f9fb46651. 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/PLA247013640.
Za mną nie oglądaj się (feat. Halina Frąckowiak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe73263c844726795c90e05707cab995702471244dcf4bc98bb10795047f625. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/PLA247013641.
Za dużo chcesz (feat. Halina Frąckowiak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb8b3d8cc885cca651de65f4930f23467128426a564151f477b10aa3583b6d8. 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/PLA247013642.
Wspomnienie z Sopotu (feat. Halina Frąckowiak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b199b20020deb86bf23329253db80c55fc6fbfdbaaa886dcdcdbab27c56a73. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/PLA247013631.
Nie potrzeba mi nic (feat. Halina Frąckowiak, Wojciech Gąssowski)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0332ee398e077c550a3ddf37045c210f0ff571adce3cb23483e8cf84f3df482. 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/PLA247013632.
Przeminęło z wiatrem tyle dni (feat. Wojciech Gąssowski)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc088182bf9f8ce4f1b4b81ea36fd0dd82ede4b0b535653aa1fb023d63357fdc0. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/PLA247013633.
Droga do gwiazd (feat. Halina Frąckowiak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3572c35ee89cc071997cf9cf0b74188946a6c9572c11cb49c31a502880019ec6. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/PLA247013635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bce207593ce25eafc7ad25951d0decb87a6a3fbd832c29c12fd018414e1647. 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/PLA247013636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe73263c844726795c90e05707cab995702471244dcf4bc98bb10795047f625. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/PLA247013641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322b8f46c85fc513ed4a5c5d5ca7f72af5d5943e148b361aee9fa42751da7286. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/PLA391592201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b84a937a8a41aecd3a113ce9efcb97daca451ca18351bf8cb1028df2587bf1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/PLA391592205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe73263c844726795c90e05707cab995702471244dcf4bc98bb10795047f625. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/PLA247013641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb8b3d8cc885cca651de65f4930f23467128426a564151f477b10aa3583b6d8. 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/PLA247013642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630dfbfad5c463cb6ecbeba76c4e9261c016c4a96361703e2bd4da40ab848205. 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/PLA246913164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3572c35ee89cc071997cf9cf0b74188946a6c9572c11cb49c31a502880019ec6. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/PLA247013635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bce207593ce25eafc7ad25951d0decb87a6a3fbd832c29c12fd018414e1647. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/PLA247013636.
Chcę ci dać zachwyconych oczu blask (feat. Halina Frąckowiak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9a67fd3a6178f3625a3a53e0e41b453b5c1c2874ac9947ccc91bdc4a2014d9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/PLA246913162.
Oj, czekam ja, czekam (feat. Halina Frąckowiak)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4344034a2ec0a83675739278a78d74cc2af0808e2454ef53e8d5663578a89397. 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/PLA246913163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7f36807f9635959650d5b46b3da5b51f7861d6570a310c98a424c9838d0373. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/PLA247013638.