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 0xd65e1665b14ce58612419a5d5e86c21a94e21fdfa86f270f2ef4e7dac3042f32. 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/580abbec-6574-4a11-a2b6-9df9a77db746.json and https://artists.proofprofile.net/proofs/artist/580abbec-6574-4a11-a2b6-9df9a77db746.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 0xdf46e4be427cf89061375cf54b45cca4f272795d622932b1386227b02fe1a66b. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZFYZ1973254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29d9acfb0751acc58d8c506f8852e2d4fe062e7b9dec859c6ad71045b94df9f. 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/QZHN51943638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60d38572ac4e8dee24cb4fd813c696ad054e7e42b9179a62c83c74a43e8cfb8. 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/QZK6N1936096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963629834ce7c70d2f1a2707f57b111fb33f20d4c3a9a9313d6c2d46f6b90afa. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:06:45Z), 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/QZNWR2075336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b83a605780db96174e0b32ecead8359f27c4e5d7c5840d2bb6658cd9be4f663. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZNWR2075338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbd498f7b6de9e3228efd1f35450999c82001aff764453e3d4d5a063b609986. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZNWR2075341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6145f47de07c5b8b85b129b92edbba6764b3a8dc25d83ad6f80f1a31a4ef983. 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/QZNWR2075342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624f4e25b79be3e32a8f90edca4a17a41f4055db2850cf696a71ebd23c56ac00. 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/QZNWR2075344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf587df4fa7f172c43865926803fa42afcd1683ac4bf764f0c02896763cd03e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:02:53Z), 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/QZNWR2075347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a70030f14971e13b50f54b7825da42c7de6c19c1def2226ec5fd3194e55cc1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWR2075348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f7124e3496e0869000167fea82b0a9a4ffce4b5d74870c302a091236815417. 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/GBSMU9118188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc9ac6288a41da70e6af8953ef588d50ab08c6fc0ccdabe34da31f523615ba4. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:02:19Z), 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/QZFZ22244546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16712c177d8a3ec5d8f893e2e55238b2d18acedf77af6c91eeb4da9e8db80cb. 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/QZFZ22244550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb219c419fdf88f93c914b69cc38e98d12404d3f9c8b646b23e27deeb4b049c98. 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/QZFZ22244552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61decbd90e4a3558985ad9ea6c6890b99f66ea20a12928a5420027d5c54a93e4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ22244553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872244b2ca58718399db04df23e97482750410cb734dbcc155d8aebcfe08a6f4. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZFZ22244554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa378f07eb24b167c413723e38a25bfa1ef1510e7efbebb4bc09b9800e53a129b. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:33:39Z), 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/QZNWQ2281118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee232376a6de3f4726066352f57292514c502ef2c60d389176fcd5d49dae0fa7. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZNWZ2240608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe154d00f7e44f775b46941731f346e322f6e2515a178b406838d3548b6c55602. 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/DEPI82314200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0191027d5cba29b160ba722d8484aee5c0fb36f7067e4033ed9350e4010ef202. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DEPI82314215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248bb1a5746921a873c49f9527308525eaf34e1727b22f534b3e3117892648c9. 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/DEPI82314204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6e2e105cb2e806a076694d09963cd821f3649504285e190a3fb1a68a58a9bc. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:06:56Z), 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/DEPI82314216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188daf98233f03bb58d910b6892a05df0f6124083feb82a1a8c93c0a1ba18740. 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/DEPI82314220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b28610a22e0890947f09db833a0922ba10933c85e0db98e9eae32d6ce2663c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:30:06Z), 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/DEPI82314223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95698ea10a0adfea263b21acd21ab909ac76fe52fe1c6cb1df0e8d12862da96. 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/DEPI82313994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1fff7b0a7fc60cd00bc868a94df290fbd04ea571fef9b79a61b6ddfba71e6d. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZZ7P2452467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b321bfbf6660846e038ec7b66165e5edc1de4558babfa2498060b7d102ef0b7. 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/QT3F62504658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41505155fec82973e32492fd521b01f770372c0ad52d67486e8e2f4aa151ed4f. 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/QZTAZ2213517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51235cf5bb254facb18bfed2898edf34c4490b5500e84cdd66609473e06d92d5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX8LE2217655.