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 0x23813ef2fec10238e9da81cf0aba0efef69bdac8009695debbfb5db92e76a11c. 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/fd01d37a-da0c-4ce2-9eb0-4bc9c6987d37.json and https://artists.proofprofile.net/proofs/artist/fd01d37a-da0c-4ce2-9eb0-4bc9c6987d37.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 0x98f2e921af00fa2823900aa18304386e1d93bdd9e7ed00e72e46c84898de6c29. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZMHN2055102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca1e63a1125035e059400349cc5809c8e12ba9a1a4b327ec3096b29b5fd5ee3. 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/QZDA72269970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d58232cad4b6594861ca89a58670d244a7b1f7b278be51763175d45c90c5a28. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZVEM2382529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c9511f34e4a78947ce1eb3504b74a6a7169da36028cf1a8458a6cb2a0c2037. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6L2224738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fa0b951eb639944da6d9bb93ccfbb15a6d6153218ddacb656b04b5e2257b15. 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/QZVEM2382528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeeff1aa886637488159c2f809789072a3e9db9bc687731df297578a021251b0. 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/QZMER2262915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca98ba790698e2344cdaf34954d3c8e06cf43a5b3cf1c3c4b5da2174593f728. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZVEM2362243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31fffd736ecb9bd4741d81dd14b9bc73733fe78a02bbe7d08be48f326e06599. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:05:39Z), 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/QZVEM2353767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ce886a2266856c2c255f74ce075b45f2080f452cf320666f8231f6a2e3eb9e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:18:21Z), 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/QZVEM2371668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61977e378222c97bc6c377237a75108b8133e82a83486f2a2a300f40ce33d77. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:23:39Z), 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/QZVEM2371671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4828e9f0b6e1f2dddcb31cb48929bc34dd2c4aeea2b326a6267bde2da5486b84. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:16Z), 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/QZVEM2380893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1471580591d7b6e6dc6672973cb4f38969d4afa4cafb8951044323d9f31e0804. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZPEW2428118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f8e5d4d71a4954a62f531a9bc7fffc001cc68742167ffd6c832cc9d35b798f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TLVEM2465692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3ede9ef7f37fbb22d711a287a5a56744b1110122abb2067281934d17f301e1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TLVEM2465693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45eab80569f93e8ddd59646323f106df9c6ba22147d0b8be76df0e2eff543daf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TLVEM2465694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caea309a3ca39ed33fc32cecd6b835b4a7b22eb3d162e4a982ea8eb4410aef3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZPEW2512595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe419f1de37a587b3930a0c12b80b9930da0de3736d8ea0d5a65c0d985d61721d. 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/QZPEW2512440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccd94d6435d28d27458397e5feef14448d9f64c3529721cc2add3b8d700d90d. 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/SE6XW2188585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab6ca0c3c330045334ef07efe0703daea69dc4d815c202142f8f0f8dcbce844. 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/QZK6N2306275.