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 0x447719119fa266b70ead6dc12dad1269df3e2583a85e76a6095f9f885d7373a5. 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/1911eaef-86d9-4aff-8c71-026b10836cf1.json and https://artists.proofprofile.net/proofs/artist/1911eaef-86d9-4aff-8c71-026b10836cf1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Prstýnek A Dalších 53 Písní V Žánru Popmusic
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 0x0b4a9de883aaec9a5adebbdfde8eee2d4443771778be38de0f0c2bf41e33b224. 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/CZA165700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe4fd739c59b749879d0ef3d975c77010c06ee32448539ca725b5bab701bc2a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/CZA165800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551d9ca19a4f449a4046ffaccc2d72312eeb9be0484d24d7f31d4368d57999cd. 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/CZA165800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4944db08b156322c362c6070a0581c8145ca30a8c1a3352256da165fe3fd73ed. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CZA165900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe993eb106f3a1f128cc5b1f3de508d5f91727752c5fb47d0fa629f79761758ca. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CZA165800071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33097349b1acd34e6f1af2786aa205d71a1a2d8384f78e0f76e542fba98da8b4. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CZA165800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2f8e1bad2cf57c0fdd2340afcd72027448268c7389cd5ea8d190b70af4a280. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/CZA165900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbabf21d79536a86820dd14d3c026d4a1d9de70e8982ad39e18d10530983e7e. 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/CZA160501432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf256200a4b5d44b66dde3426c4639950d7970fc482c60dbbad809a275b620539. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CZA160400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042e58582e2751ee25cee11fefc496f9336bf4705bd195d31fa45dfc2836929e. 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/CZA165900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522df1e640e375a749505858ac5ce88c872d043728cb13a1b4a8cdeaf8257713. 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/CZA165900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc403dd2892a270cef09f3c9ec978a19f68ec12938e53dc1ac35afa731f26862. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/CZA165900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acf05bffbf52eea891ecb0aaf766fb34adbc0d5b30cedd7b0c9d7d8bcc85582. 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/CZA165900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd70d9e3337d7b842262212d68e1ddf7dff6dae053b4a216557b5d5bfe5f018e. 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/CZA166100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd790d7805a3620b9d866785b550616edac682795f1eb31b71cc741f31983591a. 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/CZA166200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ec6487877cb24058e5e03129de9d8d82ea2b8bdf58b17c83c3edbc23ef45b7. 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/CZA166300366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46532d71032f729c4458449db143d2c22b2002e96502c48d9ffb0accf77296a2. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/CZA166400229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd6052910d596d73a2e104c2a101be4020285b39f8004c72c448397aef1964c. 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/CZA166500314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc85afd89e7a4282ad176b8d74e5e79b10071b49b240ba08f92ef7091bd49e4c. 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/CZA166500272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccf1a3dafeb5a024d186ff2bf47d3db0ba2326b6c87ff6a03151db981b7bfda. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CZA166500299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318daa761f4bf6723ab9bfac54e42db86b47ec7064e920fa3092a5a74f47e89e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CZA166600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabe02818ff17e665576f29115ea4fed93c28ff86c544abc58fba468965baeeb. 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/CZA166600311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b814e9575f84c74323ee224a19b504424d0a0150dab183957e17be20718cee5. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CZA166500322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5ba0a0e18205bd3162bf406f7dad3196ca4052e5c6ca01378c12f145236519. 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/CZA166500151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf256200a4b5d44b66dde3426c4639950d7970fc482c60dbbad809a275b620539. 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/CZA160400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd693eb4d6c9060e7c0b97a7b7e954b64b400050fc16660c6bdca4388ebca8ace. 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/CZA161100823.