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 0xa199a7f8dfea9bfddd7db6e12ae16a23443e67a4d660ac5ce06444019473eabc. 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/b333d159-0d03-4e00-9693-68255ddc8b49.json and https://artists.proofprofile.net/proofs/artist/b333d159-0d03-4e00-9693-68255ddc8b49.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 0xd9c406fe20b150e8c30190bc9b0a14ad961a133b33cf42698afee681bd2dc725. 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/FR9Z62300367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407c6bf74386a5afb0031aa8b84215c9aa61bbeece86daff05c0b21b01a29684. 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/FR9Z62300368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7490c113b8533a071602aba5771b08197539ba0bc20f0473393f7b81cc8d1b9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9Z62100794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9050705fe4b0c5f2f7ed304c760096f9935db6f942d6fc8e9c43988f429b57ee. 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/FR9Z62300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0962c543e6e20ccc024a98c89c0b3de818c6d64e0fd17dd79523897031496d4b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9Z62300281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c505c844275bc07ef9c41fa0eab03dee8f0b2a3bb86bd86d273a76dbe41fcae. 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/FR9Z62300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff2b075acc7a9907ddc2b2725ae354a2dd7bb8c1eb9345523dc5bde389a0503. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR9Z62300370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5346d49d506ac92d6a5de549c49de8909d4059ec05e62d52bad92c25ba68e92f. 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/FR9Z62100398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0e3d117e76979b8b7ebae9acefbd00bbe9746c72d3290aa2565fc971000986. 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/FR9Z62100399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac23ed0cb82da09166dcb08fd5cf7c74f3fc26542522024a40950ac599cc598. 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/FR9Z62100400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f07c28964b0a3e7bf9c1181ef8710e7dd649061d7c08d2186bb14f7d1d16d8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USCGH2185351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28fe55552c6871851897dd4ca8b1f40f982e4d99cca5f9c6659bad8f585708b. 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/FR9Z62100335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3eafc0bc4c1dfbf6762da830c7ab68274bec796c78a51308c106bcaf6699c6c. 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/FR9Z62100310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdeb3856115d249c6ba2407a418117d4f105f9ba0a4000f305ab2265293ef6d2. 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/FR9Z62100402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51027510cb9c224764df9f03046879c9b8159d1851c3c8c36c0bfa992505d15. 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/USDY42156774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad2a77ba2abf166cdd4b7fab44d80a14a91436152784efff2ff5a8b9d34fc0c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM91910969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3f033af01ccc502ccbf62f9b6f422fd39267b3bf9563bab855a847c5c292d2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM91910970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccf6cb5c4adf9b60275f44d305988809bc0c735c7b5ea44bb72b0a6c7090710. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM91910972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f96ddcbd647b2eeb1150f247c1daf8ef4badb2399c443bfe5e01e5c89a214d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM91910974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0962c543e6e20ccc024a98c89c0b3de818c6d64e0fd17dd79523897031496d4b. 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/FR9Z62300281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9050705fe4b0c5f2f7ed304c760096f9935db6f942d6fc8e9c43988f429b57ee. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:24:06Z), 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/FR9Z62300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7490c113b8533a071602aba5771b08197539ba0bc20f0473393f7b81cc8d1b9. 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/FR9Z62100794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28fe55552c6871851897dd4ca8b1f40f982e4d99cca5f9c6659bad8f585708b. 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/FR9Z62100335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3eafc0bc4c1dfbf6762da830c7ab68274bec796c78a51308c106bcaf6699c6c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9Z62100310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f07c28964b0a3e7bf9c1181ef8710e7dd649061d7c08d2186bb14f7d1d16d8. 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/USCGH2185351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7997e99ca71c71f87eaee585f02dd972976da57d09c9ae44c354205080f3dc57. 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/USX9P2017871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535a3f04eacc1b2eaa8fd535635f94da9967cabf643eec7e953c53f38abe417c. 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/USL4Q2073851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659ed8a02dd18d36fb7c4e2dc746f84c65e9129ae4e4ede418d334a24ecdc70c. 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/USHM82053373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43462d3755a51e94b7e62535fe344bb2124217ca505069d313d3da5cfc27ee33. 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/USCGH2053184.