1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4a4ee0babbb6189be644c72a22e8fbbccbeb4e14a92b1a8e1896d51e8d734285. 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/18bbb03b-a453-48a1-a196-14d2c7393eb1.json and https://artists.proofprofile.net/proofs/artist/18bbb03b-a453-48a1-a196-14d2c7393eb1.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 → block OTSBitcoinBlock must exist at that height 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 0xf9b24e8d9b0e8ce23fc2568a9a7824e6fb36d60ae4f3e54354cd727ae27661f7. 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/QZDA52008363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9e7aa21e1e4e58e178546688dc74da9773e0fc0071c11e0173ef2ab99ff551. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6G2055790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a1f7b8531367a7bbfecb5c897f68023fe03bce465bcaa49ad053b92966cadd. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZHN62136923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bbb4adf18842ee7bb14369a898913a36161cde4124d3d7ff9401e9aa2cef8f. 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/QZHNA2166615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd67786512a0e8ddc2f7dea7e7a6bc2ef672f2b9814f44eb17bcf1ab66246fe. 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/QZHN72202766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30edd9faf7ac02e03ccbb2f45b77de1749812391011c289dc5b9096015698cf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN72202767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb250ce21e30d261bfed14d211a0c61a46cf732d87248b2969658d71c2d3801b. 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/QZHN72202768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a268c7e266d3659411d88d131b01688990bd8ca3b415b4df7ab864017655a7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN62214209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7365945a94919c58260c8db03c26e4ba871017ea644464e4b0c5c25479529d63. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZHN72202769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2130f50473b8f6c90f89fde56c88bcf0d6f69dc5ad9559fdc8778a2c851f4d0d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:06:08Z), 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/QZRP52218693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe965a44c07c921259a916bbc47f5431ec465576106dedd1b4e7bc4d285de19c9. 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/QZRP52218695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391982223cc917631e0daab2f93a63e759c8ac1337396bff26605ea19527443f. 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/QZK6Q2324081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b93bba7ead112415f1fde4d9fe2a3d17b6400a693fb4d9a1ccec33c2cc7dd9. 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/QZK6M2306431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffee260149446603c847eb51ec2f8e4fb18786e5359b8e3adbb231b730d329c. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZK6J2387720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757fcff44993702c12f6b376857ff54add84e7b9208f71962da08e3da584f934. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6J2387721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff387035b333eaa7cb400f9876228bb9de5769b6c591bc561bab69c8dcf42a9. 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/QZK6J2387722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5541b656e0a2c101bf916306aeed4c8c2f01e892d564e61cdd08ef13e6487a. 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/QZK6J2387723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17be50bc93b246d3987f52c1c52d574dbf148880c5aee970674f5e3d379c2cd. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:31:29Z), 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/QZK6J2387725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0389b4a8aff6845fa5a883bc3ab9de4e9def6913aa209debc171ffe9f6900b67. 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/QZRP42410304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196a289b528dd9a8251c2c8e9470881c2796b2ac6f033f8b2315964c3947e614. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZRP42410306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d60d10bf8e960e1c4fc8b7321b6095f12df8efc8645ebe3ec14738075cd8930. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZRP42410307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020960ba775b03cfe4330d620c71106f0d06550a4126ed26ca9166e905f0b0df. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZRP42410309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0fb79bc248376647c628a1f3a67152fa9909dd52b359784a19ec2a9e4d5d46. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZRP42410311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b701e7162bee18f99935fa433e316d4c99524b4a7c15d0a6f6f406bad33c9ef. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/QZTB52444580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a434cabca30029d9da639f0ef8b70fc39cb8e27d8c44032ac157324ee70ebc. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFN2444467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cba9256cea50c51941a026e1dcf6e0ea387523c6b98fb714baadff168cb38c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZWFN2444470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bb728a496628e42b7cc52c1908066bacd451df6a3f7a988aa15c5129b3bbe0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTB82400513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4c17bffc2b45ec6cf20e283c2b859baab30ef539c29307abcfbc8a521e25fc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZMEN2442171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf476cc91b499ce79167c79420590a11385075e4548711c864dc1c60983a9beca. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMEN2442172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9e09580427bb8dacc7b7948a93dec94e9bb9d724fbbb18e6b43c5ece119a06. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6F2485622.