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 0xf52cb4b3d7ab03640b1d4fe49124671f9edf4bdd9269379282aced3e9a98ef3a. 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/02af6934-110d-4382-97bd-a9f2fbe34075.json and https://artists.proofprofile.net/proofs/artist/02af6934-110d-4382-97bd-a9f2fbe34075.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 0xa00b05af2f1116e35efb8e9584203cc9d947a570b4e96ecdbe46c08392ea5bad. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/SE5IB2234769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545bd7a97f5dcd206e22718270c9df50b1f594c097150b45b936c3e912ccf820. 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/SE5IB2304823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0555132a3a8af28f26e6becd20817673812094e4b24406a0eea0c455fb0aa70f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/SE5IB2329727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18730ad9e0b160e0867d08f9fb2a2d19c3768b271668765b176ce0a8b375984. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE69Z2420199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135887033be4d248ded4587ffee2ec58f42e248bfdafe29ed634ad7574277ffe. 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/SE5IB2312055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf57572e2bdd9edd29d8bb45441171506a5d811e8a8c15b8707fc2bbf5bc255. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE5IB2322899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d28f042bb1e3ffd0c2110f60054b841f522404f0f5f226d319ea6fdda7f9bf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5IB2329731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb6749fbf33d3ecc2f3c82cb090aa7d269ed60dcf0d6faa40826045969d9b01. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5IB2332255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e781d55fa89fb4cb72a6a48e2699234b109da9feb326f543e01a92a49ec841. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE69Z2410055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c460fe4813b83d417a1f837b53637559719ba1ab1bcd4a36b58b3b977d9f92. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/SE69Z2410094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cf8109e4e3df45d91ac19e953cf10b6bc4e2d685fb2a65a99d761fc926d867. 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/CAWK52502637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06acaef6414fa5dda63e2898b51c1e0137c61bd5d553927e5882fec3f81018b3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CAWK52502638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc945777d39c237cc546783473946e41741a68aae902209dfa3e65c94625fbfa4. 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/CAWK52502642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f74314fc523067058c01966dae75b41d17dedb072c1c4168f7234606cd66690. 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/CAWK52502646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb56b2d34152dd89252e2adb00cc01a56d4354b17f69af9cd0d36c9bee64498c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAWK52502647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10276a5d08783d6913ad77aacc56e527e164906cfe4fe284797f7c1367e554d. 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/CAWK52502648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c82805383bb5f033d4e4650473c71a1bcdd779047725c376ba5780a5c5e47f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CAWK52502650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36be191569dd5a2fcb86c626918aaa025f57f5a8cc39f5a9e0e71271edc5338a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/CAWK52502652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169cb07801b70cd7cc193fd8364ead8b7257d7c5a2bbebad83307b772814df03. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:47Z), 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/CAWK52502655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81785cdcca324869b26616915ba910a157081bcfb9243cf6ac35bed0b065786. 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/CAWK52502656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545bd7a97f5dcd206e22718270c9df50b1f594c097150b45b936c3e912ccf820. 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/SE5IB2304823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e781d55fa89fb4cb72a6a48e2699234b109da9feb326f543e01a92a49ec841. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE69Z2410055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f95157bbaeedf394f0c89c19e37abfa7e0af8d94203685880ec6c832120507e. 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/SE5IB2312047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690567a2777dfd00bbd7ca019804ee6dd7f9190e9d770c01c4a3640826b46821. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/SE5IB2329739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5230e28cdb7c6d831215224bef6dec054e8b37480a44bed762f6b1fc0d702697. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE69Z2410124.