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 0x363f961609a712e7f6c0c9a8bbc6761cec2deb562e36da686fdad27010c72b14. 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/3bb50d0f-32e9-48dd-b515-673e89e7277f.json and https://artists.proofprofile.net/proofs/artist/3bb50d0f-32e9-48dd-b515-673e89e7277f.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 0x5a646871e5bfda6abb80b1885042073f6458023a4d61a2365c045acfff67f67a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNMU2200920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf14e51c97b26fd68e05ec097b550f63553f40e1fd4784e2f20533c968ab9a99. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:19:19Z), 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/QZNMX2264761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1968f030d7821d31dd6df69f25370b4bc549e8f4ac2f95df405860e335d29050. 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/QZNMY2266131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b4175375c56842db6b5855c16c927b7b03e8ddb57605e035df7b5d1f09005e. 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/QZNMT2386350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcc9a531019a3d999c70a1c40429a6637e62191f982ff1da4d514fafb597c2a. 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/QZNMT2386351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f39e932fde8ef12ba4a21653d0f8537d308b33dc7638e9410a2025977808131. 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/QZNMT2386353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214fe74a55455aeadccaddc9ee76a660f23c503bb5e7051059b6fa1473b3e0d0. 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/QZNMT2386354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c12fe71581cdd7a9af8cc191c88985a7b2de518e813e39c5f69d98367a3df9. 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/QZL382363120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a99d560dd9e84ef90b8c6fdca9cb3fe274a64eb5542bae6dbadcd24dbc66d1. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZNMT2386355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87659b2dafbf209738f000f52abfbba2b0333b17bfe537b3943714f0a581180. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZNN22238491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79773884d1f5cd0a5cc4d3d8360db11d374e9b7ee02cb373ffd2dce30e1c259. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZNMT2386357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fc3754c02d235717a299da381c968263f7aea02fec7ec6375af56a4e206c9c. 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/QZNMT2386358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8444161af11d1868d96fe796b1b2e2c069aaabcee5e09a4c2098442761536990. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:48:42Z), 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/QZNMT2386359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5371af64bdec145337f66249cefe699f938b664edd462f798b378232c37b0a2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:53Z), 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/QZNMT2386360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ba0a25b6dc3be2957bfb746edb80d671d89923c8a2aa7b12d5395d74120a7f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZNMT2386361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca7a70751ad5e3645c40b9242d19a8a162774a166edcd1101b596eb7b432663. 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/QZNMT2386362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0133541aaf9a655e7b69e1b5ef9a128fc685c17b1923bc92a853f1b5ee6f9bc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZLL92337250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6ec92c45296c03f5b0f0cd48454547565ce0d1beaa8a8d865627577924188d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:29Z), 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/QZNMT2386364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ca92571939c41c45a535cdd86d9f552f5d32da5eaae27f18b83403e55c3f10. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZWFR2405794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4a0f641f3bd0569c716afaaeebae98def6053e46bea12b62b36ffb5ce0e22c. 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/QZWFR2405796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05327995df3ca000fe87cd953dde3d53d8cb61d1adb136eb86ce57b5babaac99. 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/QZES52594814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ab5762dac71ba0335919af21fcd46255a6bc3f206ad698e8db6707023e4827. 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/QZTAU2534330.