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 0xa8288f473156d3b6f66256ef24708727affffd4c467f88676be9fb62a0136363. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7483ff2b-1040-4c50-9537-5738c0c7df07.json and https://artists.proofprofile.net/proofs/artist/7483ff2b-1040-4c50-9537-5738c0c7df07.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 0x9f12949986fa47e8706f9bb03e2559ec628ccfeb9915e92b2e8b973d23e2db9f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHZ62009373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d48efa7d5623e5c28ac43814064da11d32030aa70dce7771602944b5f98823. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZHZ62009374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834cb357f8034b6430724599f9be0b4ac840cbdf087ef83010614979e2f79293. 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/QZHZ62009375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6174124b43f904536ad7c91cadb8a3e59c6db7552dcbf259e9f761b285a91769. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHZ62009379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dde660ab3a07d46eede71f4b9accb3847563dae1642b7c462ace9394bfc433. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZMZ92032689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fb612c932ef5cf488facfffadc2705f1b48e3d05dc21fce2e805a6af2d424d. 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/QZMZ92032690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144ecd5407199cb96a47891b2d2fe6b366f70b4af86fa1079bc1d447c2b46c44. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZMZ92032692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cecbc0ee0f7cc30c909d3ed23c390222e7a3df092d2c89df77e3c1c6da9763. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMZ92032693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8686fa3de474a3fbdd49eaea7a25a5abeee6d8056090bf0d56fffe8c822ea70. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZMZ92032698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a21c4ac9b6431c16a5198eec9d5c0a6d71e8a758f7474ecfd02da573ed9742. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHZ42190635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c6dd446fc19be4dbc9dab8f1aeb8f55139406f4ed2eefb735cb1f27ce3336f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHZ42190637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1c4fedee0cd11de2497388542ce208ac5dd9f8c84516bd50edcd076eb6794b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZHZ42190636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcad1f5b767dee3a30d53a4c50585121664b452049287ff74e8ff3ab86dec5da. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZHZ42190634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecbfe387cc7601b1bc24296dec6670e44cdbc0bd8d052c021f208539c55803d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZHZ42190638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbff261e03ca51b5642e2ad6519e834a749ea975f3218bad4b795bc409cbf2b4. 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/ES71G2327723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e2c9176b307641fa839bf6d9996fa38543fbe831a49ab02f5748e993f2796e. 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/ES71G2327727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d4ca1f3845038e20bdac60c7b1a99a111eafeb6b9f6c8a89ec66cb924ee125. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:06:39Z), 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/ES71G2327731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7932db4e9c5fe202d73aff0146a58d27b1cc964035450f5cfc72414ab4d81c. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ES71G2420466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bf167e36248c07bf6310c887077fbf9b556b40c1a910162ed80a5ebfb9461a. 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/ES71G2421393.