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 0x93d239e36c71266a6958205b419812341244de68648d8c3092d37ea983670727. 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/09b223e5-ebe1-4d25-8cfb-965323b8d99f.json and https://artists.proofprofile.net/proofs/artist/09b223e5-ebe1-4d25-8cfb-965323b8d99f.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 0x3a2aad48ec4d4c650df9817a2c49a7ac4ccb825c5de358f8a14fdd3f9edfae4f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNWU2241031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad600ddef6e18bb94ce8e79da849d27699030cfd438fc53829cee2452180b3c. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:36:23Z), 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/QZNWU2241032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567b22668d51756e6410ff7cfb14c23cf0f3cd1862e46416b361bbd5ff1f5640. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:38:32Z), 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/QZNWU2241033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3dbda608073184c042512a5b866b00b7bd0630b491f9a23398fba8e72f9f59. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:28:25Z), 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/QZNWU2241034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7850c70bbd574bdd3f58424b7952193b7b90a275412b312f5b74325fae0b66. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNWU2241035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126a300cc2330bd2fa70f43f11042e4827b15b0529a5d29681f1e4873ead1817. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWU2241037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74faa2fc544dad9774a0d3318c8fb408e79103ca714411b54f4c5639edb645f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWU2241039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e55b71eadd4d6769d14bd7dc45e7657d0706131e472cb0a88ebd648a7330548. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWU2241043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b90726d11e19fb1de531b0e1058029dbe8788304724fb694a40ac1a02c80b3c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWU2241044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216a2c6e5c866ae63914c09ab815938e545123cecffb490d2c8e14a26e4b7cdb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWU2241045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdf3f1f7a17d936e9ca8abf628a136255c7e3b767a79a05c04c357cd3622b86. 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/QZNWU2241047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b861104bf6f19514c669317df63003a6c6f127cf52417aa079178431d7ec2b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWU2241049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6ef77c3235a5410ca84678db426d0dd49883343c26398aa2822ff72a49e547. 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/QZNWU2241050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7576803a35f74962e941dfac1368e3e6e0aa9c18528efa330fc891101a42017c. 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/QZNWU2241053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9974c43394332a01c29790226dfc86e125226484047bffe0ec658ba1665d39f4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWU2245060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff4959c649445b164a813fe3e67651ce033795ab0cb67c85a8315cede1db746. 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/QZNWU2245064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12783dea919823974b23ef659a45c823beb849f167d5054129431854a0eb0549. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWU2245068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42393b1d1d7192dc4d2c8085ca0a384bcdb2298fbf8642c0220436482471c21e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWU2245070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32c2497fa40ce2c08bd9f205f80ae04839adfc4ff2a4b8775425244f4253694. 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/QZNWU2245071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe49d1dd26d8847b6ba36183c4c43cf276e1d8a1d57f44c024cd355537a52deb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWU2245073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa690b9172ecd8edadce3218294b4cd803b214956bb9195a6c093cc49bf7748. 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/QZNWU2245075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70063ea12cbc5715c4cbe62276f287a34acf71dd3c8d23d0fb54a4154cd2ad53. 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/QZNWU2245079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe311f810543070166be4b5ab95bc032915b93f4df354ccdae791aae943e20209. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:25:58Z), 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/QZPLR2235105.