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 0x0637f69647a0108788b2c5ea935df11433be1016a0a591f1e6a993c761c718a1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/feb24b81-3a73-4644-a35e-e6dc2850d62b.json and https://artists.proofprofile.net/proofs/artist/feb24b81-3a73-4644-a35e-e6dc2850d62b.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 0x94cc1e9d103cd1b192505a8669dff50ad13e1cbe28b2938f27d822bb146710aa. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TRBDY1807302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089687b457aaa9125fd6575e27157d8de985548de43e6a5a22a9d698ebd35395. 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/TRBDY2246501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe711ca25c812492107b7a92b7e5de352d280054211590595670a28ad06e3985f. 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/TRBDY2246502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c963a2b60481dd6e9aacb64d468277b06d085516d713fb54bcb70a21780e5e. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/TRBDY2246503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ab5fc9bb632b41d86f97dba8d877e909b620c2103cc37e75ffb0a6f813e0a3. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/TRBDY2350904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e7c39334b16a14cb79d1538e23606bfd821b99e57ee200f5e2956311200ff8. 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/TRBDY2350905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a08730d4711140f2bdfdd1d230692ad1c86f0eb027ce63cf16e91d789d1a297. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TRBDY2350906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c147dff480f00b241279019674b67b089be613640490bdfe1a75d1ebc5d669f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TRBDY2359304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8656510acc37629b1498cfde0ba0dfaef7da794926591808668e06774875b7b. 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/TRBDY2464301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebed784261a040f9a2469c81981eca6e5154136a0551530a57b7e79620cd645. 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/TRBDY2464303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e895b1e4ee4277f8a52d86c1e7ab30b9a8c63db11d30b43edbfc21eb210211. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TRBDY2464306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fadc9837b20b2e2e478ef1e156dec5f284bf355ede259ae5d52ac80a6d2e25. 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/TRBDY2569203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988f51e0b9345bff852f494f8e2e929a41ac193197120ba3affa7c6a450266dd. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TRBDY2569204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20fe87e6c92f3b20ef61f44a2583975c896a2dbc8a4cabd079acaa227d3d032. 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/TRBDY2569205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077f8099716e1063f7dc7c26c5958f73e7b92b76281907a89be35f5d597f2133. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TRBDY2569207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aa5073e5d03c1e1422711448273ca815664042518e3b5821947c74e2b8061a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6P41713100.