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 0x4212b3fe86a467167e14878675f1e78ee53e19c60ccf60a3f8e477b1b2eb96b9. 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/fc8a2465-3d76-4639-a68e-c51b7850033e.json and https://artists.proofprofile.net/proofs/artist/fc8a2465-3d76-4639-a68e-c51b7850033e.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 0x1b4ece09d90896f62ef485bdd315e3c53eb2284ece3320928c9ea1a5c22fcca5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZES61934325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dd405910d0536d171f5038fab8004ad9819da05907d6833abfa3a3ff730985. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:32:36Z), 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/SE57X2000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d29686c92f8ef66c69bf7ba3db363a1add3f9cc34f800d11a3d942b2aeea07. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE57X2000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfd6b10751d984692ad456ee2733d4d5d670848ee78d2beae900b26213a12e8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/SE57X2000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335c864a107a01b304da3059aae5839f40c9c2af53384a24ffcb8a47c782c8bc. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:05:41Z), 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/SE57X2000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4898ea251cf8f8f05dd46024fec382365431369ab12b1835a5a4eb8b06547c. 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/SE57X2000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1f99936e82e5971c03f10d59f9bd88d44cec2da1aded5a721aca4dfd1851b9. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/SE57X2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c775b92ca503edb58bf7e320720ea9fce7ac68640240e16a3eb86f840dd5433. 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/SE57X2200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d44defbfea39f6c219dd73de658a8465954526a38b7346ef6e80c17f6054f45. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:03:49Z), 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/SE57X2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb605e8a23ac383e6bf8459b7f9f44d114be99d5c850f927b074a08075c5dd835. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SE57X2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2bdd1c928f473981db6544aa5790459a0f3e1af846e57a5a00d2a3bd718fca. 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/SE57X2200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f274e9272753be8d730c14dc2c9b073af91ad49b6253c871d189783a41cf9b. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/SE57X2200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8a557efa2aa1e9415b4e61da14442f06b29d6d086b0b259175b5ce4a44a101. 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/SE57X2400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f8fa6e65092d0e1f08c37f8ad76a16f9e4598b27270377be24dc3898f6817f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:36:40Z), 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/SE57X2400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571811507241390fa26909806493feb32a6365a6c8ade1dbebaba7deec55b2b5. 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/SE57X2400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ba44c4cc3d2b217ebe613b2e3ebfe694185ad2111889f6f7baffe6b935e97f. 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/SE57X2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f8fa6e65092d0e1f08c37f8ad76a16f9e4598b27270377be24dc3898f6817f. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/SE57X2400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ef72fee2a3104cd462f1ff5f051cfbe698f3863901f009c7141c24f009bafe. 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/SE57X2400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8a557efa2aa1e9415b4e61da14442f06b29d6d086b0b259175b5ce4a44a101. 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/SE57X2400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a7b84646abb89bf4b9cf42e44b5f454f5807005206ec0e8d5bfb14906bb679. 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/SE57X2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8d14cf17effc48c4b2e0d9d1bf5140a2f0830378eb9bb203c5a696f7d03d7f. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/SE57X2400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd8648a20895f8194aade6a1da5a51c0a1c5813da767143b63a3de416251d9d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE57X2400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bc40aacf5ea0cc76c1a12047ab6234ea43fe30c71b6f0024882301c43436b3. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE57X2400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f5a81e473e528b8f857127784e5aa913f2dbaa0e769c8c989a3275dab0bf2b. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:58:45Z), 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/SE57X2400112.