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 0x0ce97b558c0378de921cd9e36809b58763cc38fc5043ec994db9d01be2d531fb. 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/af82c26d-4000-4e1e-9b5c-86bbbabcf54d.json and https://artists.proofprofile.net/proofs/artist/af82c26d-4000-4e1e-9b5c-86bbbabcf54d.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 0x5b1e5093da4c969a8d049b75139e663a7e46dca6186c4f84f38b7dcd35dccce7. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:04:06Z), 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/QZWFM2359926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe618c1edae42161c83a370fae444637337ed687cf9837381b319f6c607e61672. 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/QZWFM2359930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b1f0ba124fa8f743401e4b2216f5d70835c37afdb6bcadf749d2bc5c8810b0. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:07:46Z), 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/QZWFM2359932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ad2560bcf4c42394e0ca685a24a9829db3c950418a8bb300317139077282d3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZWFM2359935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5612caa04e6be3255b7d3dcfb3581df743fbcee86dd7bf569d205ffb69c4629. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:07:18Z), 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/QZWFM2359936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe316d1af6b786f2fcab4ec9d5398afb84f6553bca19fd90d2b2aae1d80d3565f. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZWFM2359942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542023b61c78756cbb02aa412b7cdef1ebb38d7c40cdd175255ab0dc027226ca. 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/QZWFM2359943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b026b4785130038cf27db71e7a3122b9a776d4c8a2f8fec6e315b300776cbbe. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZWFM2359944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f038c66960a6e7a06fc6f33e261dc1302646a76ccd9704aaaba88bb02f1288. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:30Z), 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/QZWFM2359868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd8a70e59b10f151b1aa1599a04e0a99adf97dd1804ad75211fb101fc719fb2. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZWFM2359872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c46042c4f2a4bd6fe1b1f8339038466627205c88ed9ee572399d0f20ae84ff. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:32:15Z), 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/QZWFM2302963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15950de53f32a48329f274c7544e6d20df30f21daf228a57a91f767e8679e28a. 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/QZWFM2302964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bd1f7a73d2bcd2fbf608528bf685ee32720fc62d392d48f545ce420d1731f5. 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/QZWFM2302965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc8bda8064cad5139a4cb63a41f9b98dbdc41f17e4a7fa418be0537a58a8342. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZWFM2302966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3c1d35334fed048237784e2e32a410d1e95df07dd6011ad0e269b093c5532c. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZWFM2302967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcbabc1344a43aa0e8c772165a21839d9800a05a3feaee8e0b608b538d6946e. 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/QZWFM2302968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93620c2ae633fe1bab9285e9db8da3bb7ea018868ac3793e875e03376a9fd8fd. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZWFM2302970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89e6dfb44d98b52de4f4fbbd9c0036a1285d4256ef5a26bc71fdc6b82d8741a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZWFR2332937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e335b9e2f211ac24876f6ffb11c2fca8290f8e37df91141fc9eebb68b339828. 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/QZFYY2444033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db336eb309d0d65eab6fd3b54bb36f89a593e39d6d410a36268987d9e328d3f. 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/QZES62441202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df01502c1cadaaed7b9268f4f49df50b0decfe175ab1115a5a28b47a839dcf9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:41:21Z), 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/QZNMY2489375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e6d5c99551f31100b08308329c7a6f1d4e64d59e37a7da6f2229528e37d453. 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/QZNMZ2415926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6061904cd8bf0d1b8b7fc1fb520d6edcd466220281fe0a66e6958e6fc9203d47. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZL382521629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd9f9b360183eab9f84e7e8e4e62c4447b6eb0e3fa15dc4dfdec7199eccde1f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:46Z), 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/QZLL92537157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba6e146287696d063cca333e40c58350dc4f300d06dd973eafa705a68873ddc. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:14Z), 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/QZLL92526114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e307525f2e024cc64303e5d975adf098f3c64da6e658dfe48e6e1d5471b098. 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/QZLL92527625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20117d4b1069293d29458cd5e62907e76b9583ff0d13288edc7ebd8449b5de5. 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/QZLL92563782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1116680cb478644a4bba9524cf792c40d4910aa56d7f371a1e8431e4324ddffc. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZMEV2525058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac5bcc631b37604a76bcf372d02ee323b95fa338941dc69bf49bdb2fcd1f193. 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/QZMEV2588183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ff06264d874a581bb8406d1028d0dddb44c12d65f2a407cdf06a30e6e2f128. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZNB82506690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81930b3f06934f8a3671296847d3210dd34c3c53c1407e4c63a7943d24cf4c3. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNMV2580096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efab79371e7f052d23492655fac6919d1a3e07b058a1b3b013da6e3f1ad39da. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:25:56Z), 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/QZNMV2580095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3615ae8a0f16edf571a650df1515633b4f786862cac385c32f94321f1d5a5c0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNMV2594973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24d92d3f5ed7e4c8c9e4ad019c92442687dd00dab1217410e9f3c28582c24d9. 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/QZNMW2532688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41008f5115c1ffa3af0dd4d9f48714008e76db276cac2949dabb1fc381f037d8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNMW2572370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c449d070cbdf918613485296f19071b21de386789aa1f477e64038ea9122a80. 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/QZNMW2594339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe114b1ab86a7f3f89e521c8cf38b9511c5cae610858e94374652c7d79a69ce28. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:05:10Z), 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/QZNMW2571506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aedc40a93f6abcb057fdf02947c631337659fdc4c456b41840bf7599f759e2d. 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/QZNMX2517577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780a576e86102dd0e3576e62e527a28166761d888d1c08a87f53e096934a870a. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZNMX2537342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dda59aea32864aa9700ee3d418dcfda7c63be6fa62b8e297682decacd5043a. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:07:48Z), 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/QZNMX2537341.