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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509219b6c902336d2d22eff0e7d8353baefe4dba69d2d6caf3e1502683bfb2d3. 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/2f504e20-4b71-4d22-b618-9123a643c259.json and https://artists.proofprofile.net/proofs/artist/2f504e20-4b71-4d22-b618-9123a643c259.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e19948fedd020a192e172d12c4d8e07fb0c83c7e2985e530d4dcd0cbc935e84. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:34:27Z), 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/PL52J2197748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1631c95e7b4919adb22fa95a07289f082df78642e90cae485a65d07cc7c69a43. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PL52J2197753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434d7c82296fc54aab72a4ca0445fe449b8734574d3d63b7e9c02cef6cae0e54. 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/PL52J2197754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ad0bbca18552c317fbff8e1f7459f178a68bdec90f4f46dd8969175a7d97e3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:19:27Z), 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/PL52J2197741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fda89564a4762902e747ce5dc5dcaa1507536d08af0395731fc741719b40e46. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/PL52J2197760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd09c301797d2e6ec0c29f0912176830893d2b40c8249cbced936f082de34864. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:02Z), 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/PL52J2197756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe547d985b8fa0f31669f7b58ad0d23cf573f1c441c5598c6aa1621fb4e0c7e1f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PL52J2197762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e636c467aec7430f87d465a5d060fa12d048b8896a9b7bd50517c7bde1fe43. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/PL52J2197752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a597315529ffab89944c74dad21184edc504f97ab5d594ae3b9a809a9070aae. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/PL52J2197742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096dab1acdc3c5965d281909a078e3ecff78722274f2dcc480096c371b472aef. 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/PL52J2197744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47778ecae57b0b5955b06fde1fe2d6bd7c11ab0297dd2dbfb4a4b159ccd16a82. 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/PL52J2197757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82202c34db61faa8ab1008f74cd24b0233d8cb15a1fa943222007ebbdcb80075. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/PL52J2197747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb3b7ed047edd77f80bfd20dba5c7809d9c640ff8c43a1e596be445bcec79fb. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:32:46Z), 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/PL52J2236050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc2e027b5efeb658d935d57247e63395ec60216e4fdf23d344e3d7f535a0f32. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/PL52J2236057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396505f003eca35fbb4b97310381026df2ac06919e578542a097e0aaa79a9444. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:25:31Z), 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/PL52J2236060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55aca357e1389cac142f0b5c590ce1eb869bc04b3dbef641f7a4e76255c5a1a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/PL52J2236048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448fbe935da91d9e883320de32e10a965b6786cd434ba144b550cf7030d1753b. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/PL52J2236054.
Biały Szum do Snu dla Twojego Dziecka, Pianino i Deszcz
Śpiący Dzidziuś: Biały Szum i Szum Deszczu
Uspokajający Deszcz i Biały Szum dla Niemowląt