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 0x6257ec995e3a736eeb02e176208bf33727f2a36a11073f70bd41816a7e2f1541. 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/5f2f6019-3e6a-4392-b60f-895f26f93736.json and https://artists.proofprofile.net/proofs/artist/5f2f6019-3e6a-4392-b60f-895f26f93736.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 0x7b8b5d18bd3d312d5b8cc43dbec571f63219d7c79c440a7af2f6070bf25ad08f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:23:43Z), 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/QZES62204399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e27c2c98a8a566619bf95c3ce159307cb743698924ae837016590cc6cde6cb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZES62204403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e7e01193f4305e9d2bd22fe7247cd5ebe1098c616054703eb5fbcf8eec2cb8. 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/QZES62204404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd9c900ddfbb7556ee7bb50746151a69ef7e3519bc91a89d459e7667ed35a3b. 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/QZES62204405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8b5d18bd3d312d5b8cc43dbec571f63219d7c79c440a7af2f6070bf25ad08f. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZES62204399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e27c2c98a8a566619bf95c3ce159307cb743698924ae837016590cc6cde6cb. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZES62204403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d1dd0de1d895b298e7ec6404685cb116af32119f656edd46b9df5f5bba96fe. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:11:02Z), 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/QZES92288439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d1dd0de1d895b298e7ec6404685cb116af32119f656edd46b9df5f5bba96fe. 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/QZES92288439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624ca9958b8e22cf1d7026b631cf49cbf0f40e664483e86bb3bd27e4c3cb1ea0. 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/QZHN92266672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624ca9958b8e22cf1d7026b631cf49cbf0f40e664483e86bb3bd27e4c3cb1ea0. 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/QZHN92266672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448d5a2e56bc526bdcdfe200315fa69b08436a8192f4c8f756096f6b1487ebe3. 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/QZK6K2266045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c92f4f499eea0c273df4d752852311765a245158a0baef58f94c0e76f404c9. 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/QZNWT2205109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36df02c7db14ae0aa84eee8d34a6782af78ec63c266f86c0bffe8bb906de5ae1. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:45:31Z), 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/QZTB92251719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d866d490c32b9f7d81155d4ec857e6b6d20e4974ebeada7f5ff03bc8104420e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZES92371956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4756d5dc97c2b06945d3e2dfe75e231871295ceb10d7ee310f8b39ac821621. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTB62340240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d8437e8af3bcfa5dd221d5aac84a445a3d3eff9fed8916e0ba6b05ea7e20a7. 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/QZTB62340251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d8437e8af3bcfa5dd221d5aac84a445a3d3eff9fed8916e0ba6b05ea7e20a7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTB62340251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218c5667602502a40f4aeccbfeae2958c6afe7d565040b28d65e97c9ed820aca. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZWFS2323173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218c5667602502a40f4aeccbfeae2958c6afe7d565040b28d65e97c9ed820aca. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZWFS2323173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fcf7a88b578752f350d8d4f1bff961dce2b4b164b77ce2d87c4c8da22543a8. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZFZ32464452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0dd34edf6fd389624f7bcbbb56eb0ae9b9e4beaf485a3be35efb2b8558211a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZES92403099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44d476c9f9391112b0010c8504d2084bed92b8813ceb5b6d99c0fefcd3ad57f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:56:11Z), 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/QZHNB2486135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431ac8f5497cbb0d0f673f0dc840191818fadb55474759b740591d6a07ed1ed1. 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/QZK6K2451753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecf6dbe1dda4ff5bece11336d988d6df12cff916d73632a1722575f6f8cad52. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZRP52450054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcffc245fddd4eb579e7421244a0e1dfb446cc7302db1572c1a010fa2a5848ec. 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/QZTBA2446076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcffc245fddd4eb579e7421244a0e1dfb446cc7302db1572c1a010fa2a5848ec. 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/QZTBA2446076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2add0893c9330c0b80f5bbc91d6f55a9084858f828af7698bb621800fa2ea1a6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:33:07Z), 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/QT4K32535283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75cf4339a4574772c48c2973d8505b38e4210685719c3df0a754cdba2c304dd. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:04:19Z), 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/QZPEW2538447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7258b2b079d8fd59f22ef841ef50045717289ebe4aa4f9a426a7e9ea68ec97. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/US3GD4515098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adb788141dd71ff1e6378be6a20d29f98d32c5b0c6e057502d816d93bea4262. 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/QM6P42338718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471f5a40ab213dbc3fb0012e54cdfbc81c6655e73c2b8cbecb768b107e0679ee. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZPLS2366907.