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 0x0b7fd99260e67981f9b65d5538bbd71fae2c3162869620cb9947dcdb39c8bc2d. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bd5719f-0594-4b27-9636-c84e4d4d91e5.json and https://artists.proofprofile.net/proofs/artist/0bd5719f-0594-4b27-9636-c84e4d4d91e5.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 0x677d8f84548142a6f361beb3127e4dbf36770e065686d3f652fd409cbecb24e6. 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/BX0WX2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448d8a737fc523833d281afb09389cc2b8cee96e03552e83945261ac7feef8ab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXB7E2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073698cc3b892f7fc481c8fd3ade98091d08f6ce699a960ecff0cbff7ea25070. 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/BCDDJ2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1014b2481942ee7ac57f8b4d916ea02a39f1a3081f4715ba4ef778f9f20de62a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BCDDJ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88dd4901ed965f247e3ba04b842affc588932264e754f4b82ab88a6b3118ff3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BCDDJ2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabbc850b5f2dd47a8126c047374ea939b774fa76e08312c5fcfa7f7e7ab9b0a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BKIYI2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74260cf0378b10a63964cdc9916172a1c9722ac619612aef971aaedc843a9f1f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BKIYI2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e10f354473f6ed2596c2751bed7d942edfdf72889a5d995c9f0251a740f64d9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BKIYI2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f29f2535fbdcb74cc61689243ad82180db22708b3777250e9a45c28ae36157f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMWW2474568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ed4954953a9278ebab9f84431962ba9c1a5f89c66f1928fec150b6c0b01008. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BKIYI2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd1b1280f5f3538cb0e8cc8499f54c7963384df401d9820f249012c71a0c3bb. 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/BROSX2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3547ad1fd14a957aea513c037d18b3f57225c4bcc46035bbf48890af03954d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNJV2011879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7208c5935f423c0fae4125db9238af3c015cda3dfb311ab5422d3aa6fe0fdd81. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ5AB2011746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d5cdb30c5d52f99d68ca37b1e31fb1ebfc7d9936f16732dd0e18d4c5d6a47e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ5AB2011747.