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 0x0400fe8c6a0d9fdf5e7f9835317ce354cb33a4ee4fa819edffebfabaed5e2aa7. 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/6678d255-bcab-4c8b-a83d-cacf48ca4bdd.json and https://artists.proofprofile.net/proofs/artist/6678d255-bcab-4c8b-a83d-cacf48ca4bdd.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 0x9559ec9f65e361cf4554dce50b6717aa139a3ca6436410af81b73fe71077cb74. 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/QZ5FN1782148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97da4ded10ae6649daeeaaeb692c30f1e003ad0b0d3d2ab5c0d6c88fca1e063f. 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/QZ5FN1782155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523e80fb99abcaa30af3d022aaecca9e0f2774b1db66824d43a2d57b9b5e1c63. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZ5FN1781476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5623b38d15f2dbd5b392008ad6dfa43b4cbd2f0df3aa03e4d48203956a075d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SEYOK1930257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e94d339bcb1a6d572d96bbec62dcf06cf392d5913be7a6861be53f12dd98a8. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/SEYOK1951876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98104404df0969da7b5a064444f74fcaa75b8ccc3bb48b8ca6133ba4313ea7e4. 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/SEYOK2123747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abd59802285f77418671e06e974ce7a06c28bac37cf087ba12f5de1e67e584b. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZTV32319701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464e0c1cd842e77a6260c59bfb3497d297b8a8ba931ab5e51ee74417c8e3b2ed. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTV32319753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50da4c8715152629c5e93cf91ec03ef8577928a6fb4bc79a8071a2e44a1fb7a. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZTV32319774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299222ddc811a3ed588997acd7e09368cb773348da354b2a306df6bce08d938b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTV32319789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7b73ba82b675fbb722e9137bf860124f703342a93da7c809a4f47b59e251d0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTV32319792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295e881c9d77ab36ebe83c4d40395779acc60c0665ac73e02892d421cf0b9c2a. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZTV32319795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a54297dba5a73b411a7a52da444e1fbd14659f070b61208864ef5624739f2c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTV32319797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b2402bbdba7bafbe664026d82a807261e2aa76a3c56d7c76ba1c32b5d8c097. 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/QZTV32319802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde292d1671194a12399f31d0524cd0268ecb153e954bda6c5b57eac2f1eb057a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTV32319805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8ba0c7e4d851c20ddab253b4c392587dc1073cf349931ea523bc3b52a8b6b7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWV32580808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1991d15a88587d74b37052c817cf869b522e58ae2503c73547f549b65ddc6c0. 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/QZZ8A2488561.