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 0x57d69b3199b1ce1b4ee22e41ff70cee96e31768170a8133466b1df8237184f91. 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/4ef4276e-118d-4667-8da4-bf065d12f1c8.json and https://artists.proofprofile.net/proofs/artist/4ef4276e-118d-4667-8da4-bf065d12f1c8.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 0xccd205e35c2219b393202675b85e8d35e7cbbe01ee72761790c82c911befc7fc. 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/TCAEB1944995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c179b906ddb79dcba2990e9cff07c257c12b33d561f563b1d709a43b6ac65c. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/TCAEP2094679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8db55f97808bc393fa07ad40ecd723527a5fa12e7f070f5bd48f5b69e2d19c. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCAEW2063446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0976f1458128cf8cdcd51550ee92f833fd9209e30676822ec9a32f489114bcfb. 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/QZK6L2039513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1568cefdd2c6eea2481a0cbe5092e7eabf8170903a8992cfc06db7fd0d1c80. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAFJ2124021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f66bde310df3821eb60125fdfad21da430305f3ada08f48580a3dad3fb356e. 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/TCAFN2197362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ee57aa6dade46722e7de3c46d271a76acc8506e9edf2b27a6f620228fd53ed. 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/TCAFP2197209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c58417f60bb4a968f35566fed38c428a3e44e2a680c6071c2831b9c28c5dbc. 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/QZK6J2136259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ee57aa6dade46722e7de3c46d271a76acc8506e9edf2b27a6f620228fd53ed. 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/TCAFP2197209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014dd1c2085f8135ff0105e7984d9b5d6f61e88ab3b016779cf5a1c8e83719c4. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZK6G2103363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83db7b79c81096859051e069abada59ef70347ddaf65d61aad3cc5e45baaa78. 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/QZK6G2103365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb88814ff3109aa8f458d6d59d8c6513b531bf943348f2db47263d5ae1559d2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHNB2269958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98992be894c6c4559f838b1331a8c399b9325916d66cda305923169f0c231fb. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZK6G2252566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c53b4d06b1573ee51faea29da08dbe261100382c43445078d91bb97d15d02a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHN42237568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7959dc1af08faad725f6b95bf3f266a80050aab5846dd482462c1e28479c864. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES62215862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f80a4a7018164330ef073ad3dcbb7129c06f0adbe40854aecd2ea5e0fa41116. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6G2252568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae825b89903c5a848d5f31d6168d2e19ce3e721b116d1b8b48c72579d5275ec. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZK6G2252569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb299c447e47fd8e660d03b934ca508f55e9aede515c738684a706e33b2eaf743. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:29:27Z), 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/QZNWW2356697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001094b8e291265fb50f89fda1afedd12fb7cc70bea83636476b7f6fed3765b6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:47:51Z), 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/QZWFH2333131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5fdda9ac82765eefcd8ac5d08098b90e928eee0a2a315d3c929917f6259ac1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZWFR2318149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691e38c15de9a73a5d9eff4dc32f7d73156d482a182ebe4f8aea32f4465bed18. 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/QZWFR2318152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c4bd7b72e2bc3df79e04d6490c61a5447de2f5cb6dde2446d21aa6d2bcd449. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFR2318154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d19ea67bf9aaa1ae33c270d6c9bb143b0fe8d91560dac9a9ab8a76499916e5d. 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/QZWFR2318155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2425b19f2f9b17386477f6f952309bf8776352efc82d59f2a753ee890c8d2811. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZWFR2318160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e57461139becd34037d9d65a5df271c7792692fb98408f33f51bb3dfb0a105b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:02:55Z), 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/QZWFR2318161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb001636ad1491b2580cd525d5e81b942e2a41fbd46e8d02e49d2f35c1486cf1. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:12:56Z), 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/QZK6M2491151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555387b210911731ca9f5327dd92882df4dc6f5f6cc3ffc2b0207c143e57114c. 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/TCAIQ2425899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0502537a45c0b97a32866a5e80127584fe309b4f46df8efbf9d023834affb4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAIR2425902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c12118aa451079ba9fac76467057a0306f7e3acf2a527c2c4204d3e2e37a07. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:24:49Z), 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/TCAIR2425904.