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 0x26d6e9a0a1f75a47ae006100f22046962a2a8dec5c7e7b05794cc54b7ab9edbc. 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/464d4f51-728c-4409-91b7-3b49fcdcf0a8.json and https://artists.proofprofile.net/proofs/artist/464d4f51-728c-4409-91b7-3b49fcdcf0a8.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 0x14d4d2680035259b787ab44c99af38fc7e020224c1b7179c7d83966336beb2eb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NOX8G2400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1d4069a2fab9e5de45c194112ba47aa9e41bb1f15f1d0d8ac42c6156a5be07. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6K2423499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd61ee7aa293027324276644f0d0b0acf0ddf6abad9ebf0bcf906140c4c5e11b. 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/NOX8G2400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f06e2d7e060fb813b1db0428cdbdc96e4237203c22718f575ce6f766071de5d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NO2DY2400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd57ccff8448726562a50df6f15955d8bf24ba5daac7f05b7d7b1b466b9f8c2. 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/USA2P2420314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb15939b08a80b30102cac46443de28ea4cbea0396554dfcf6cb4ecb02d9dad1. 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/TCAHB2386377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc3de74efb2024501e0e167c0b345a44c5d6fedf3049a009ed8d684bb02db38. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAHA2345418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0e02a65d9dd7ea6a3e45872a898051791efde07d10c7b0594669f96c990209. 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/TCAGQ2234019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1448ac66046a08d80b0fa23ea2dde553112a0f9214e1dd41d418c444e3fab05b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAGN2295551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd918e40a82cec04b9daa0b0810d999a468a02e9266673c78218e87f6f1b5869c. 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/TCAGG2253742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f7cc0fa072114fe586e12ea9b9f5394a8f6aab54a039c5dd530029974c13cb. 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/TCAGE2230035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd942541e974e7d16a1c81a9e9b153a512dddcf6f4ac27002df03b78cb9e3565. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAGE2215573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc87f98c0116249822febeb48d669a1bab953d58aa1d4f1fb0cbdced9a69bef9. 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/TCAGD2251626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6241d6fa3ab873e6fa86096e89b1a045253d2852168fa8c55fb2adeb49cad21e. 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/TCAFX2171878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06efc03b956b4ae6b7e04e724f85ec79e5f2bc65e19976d62e523827e27cb1c9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFW2134759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bddaca955bfa86baaaed18ffcc1b54f2504fcb1ed03f783c93d94ff3a6c498. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAFU2191645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ef595e7551bdfaec0563f22ca130736ca97723c118bd3cd0f09634372e0987. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFO2190347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6765c3bc82a5bff6f71ab5f7439b5d4bd7a4911d6a689c5e41fe86d7434e1671. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFM2182899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165215e4ed073c39c7004fc518f983fe412439c6f1e522108adf56486aca96d9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAFO2117767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66134d141a23b47c0810e248b84671cd6bc250f3a32e931352c63d06453ae1e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFH2022153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eee40fe86dee88ed167a7d34fa9e71e752804a8e0c60e476836789ca135c77a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFD2003410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3087341473bd2e47a4c3bf4a77dbe3f7e919d312a85fde75f279e1a1c07496. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFD2005911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd638509e88a24a0091fa369f544b88552773dc1c90ec60c96b0551d80302abf0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAEN1953068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecddd3be74048c73aafe7899781ce716c7162d3c1f1199c3b5c2c8550ef6e214. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN72323481.