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 0x15cd1efb3d909427fbd018ca3d40896fb3877e9eb727f472a08202262f36465e. 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/5e466966-7889-433c-b6e7-e5c16e74dbd6.json and https://artists.proofprofile.net/proofs/artist/5e466966-7889-433c-b6e7-e5c16e74dbd6.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 0xce8efe00ccff55d6ddc635fb2f157f669d9ddae1236195295dcb5f1ec0d65537. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:17:39Z), 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/GRSTY2200248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ff037a74681159a98b1e760da6fa7c1df5803a8afc4a6c833dd0945a1859fb. 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/GRSTY2200249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3347ac439b2363b25c40be5a2139e36d57f51f071129edc69182802743995b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRSTY2200251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332d22bd43cc6a0861b3e2fd2ea7d60f53e5211d8ecb2cfa93e24c49607a561c. 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/GRSTY2202290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739505b3b6a88ff96af331ddf9d201e939bba94300ac61f8b53b831963482dcd. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GRSTY2202275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e26dfede47c4ee9d6c0938986abaec96046669e95bae753f34bfde2a59794d. 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/GRSTY2202280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b06759dc7fb3f6d66a09595c102bfbba5b3614c823f46571998fbad91fe17fb. 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/GRSTY2202287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8bc64aede0e49f6c71189e4b178256a55744bf641c4424972cf0672c95c4f9. 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/GRSTY2200253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982ed7fc07b5fb16ed5da82053e6b7809f4656a0e1037cb3dd1d0915992dc679. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GRSTY2200254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f912fa83b757ae43185a2be0b3939c330f86f03f1569665f693d2a12260820. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GRSTY2200257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6261435d59abe71fa5824c1486b8656d59077eaf194ce466e4b313d968168b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:25Z), 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/GRSTY2200258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e96c25025662671511a10a0dfa682beffc08c7b638b8fc817de29e1d06457ff. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GRSTY2200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c610ed1c24d8169f72d981600319592c366dfbf52951725a98ad2ea5ce56e0. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GRSTY2200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1168d9f7ab219cf5b3e0bfde1fb3e6cc05784c495f11a5e095650f742c7193. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GRSTY2200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9729bad1fe6df70888a54ae037217931e7fc576c6f06ac90a1ece6b6ff17547e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GRSTY2200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b719ff34f81541cd8be9398b376398d99286f18177e76246ea2ac7ff292cc5. 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/GRSTY2200275.