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 0x6e12aed502cf45bb8d6d0a7ebfd4ee81dc196ae0cedf6be2ba643d04fa83ba60. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96bad406-266b-4954-99c8-87195f2c4456.json and https://artists.proofprofile.net/proofs/artist/96bad406-266b-4954-99c8-87195f2c4456.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 0x99e2ea3c6917e1fd6fbf3e7c74d02165eea52b277260f4b301c1fae902615c30. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SMRUS0074484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9833a4d5dfe3043d4e78e98f794a716d79e8067d85ae76179eb399a294593a2c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SMRUS0074485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a45f4e7f4c1e1dd7f73288724cb45f1664c2b765ca76d89619d0f9900a7c17. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:19:29Z), 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/SMRUS0074486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421760f1002670037ff463b9d3d28b5fa027da526e8706efa79d934edcc603a5. 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/RUAGT2357115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe975c2dc02fcb1ad9adf5f45aedaeb5efc7e9142b59f2d07c442e76d68e8335c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUA1D2430957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703aa51ba551a4b994c11e025ec6377bf2b4b820c7e4d22ac5996bd880ccd3d4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUA1D2439253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3b27c44ffce03c71deeb9911eee857fe18eedc440cb4f9c1a595397adff865. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/RUA1D2439254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a18ebd73bd42cc326823f4d18084614e3af35b0ecbd338b86a86b6e0b07653. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/RUA1D2413063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a72ff9fe7012c6b37a295c507e2d4f255596a1f8367d105ce7b0ec74d1f814. 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/RUA1D2439255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95aa15d2a1be6c189f5d55c25f7bc43caf142022421863e371399e0169d67493. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/RUA1D2439257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba61712d3fc150f50b4aa667b5f64483299481e570e0b06ec81fc33e13d412ba. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/RUAGT2437150.