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 0xe1e830f029df3662ffe3e5da94078bf53cb52ea18aaf1aa5a36250cde6e4d9d6. 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/0d84634e-8baf-466d-9c06-115fe70464de.json and https://artists.proofprofile.net/proofs/artist/0d84634e-8baf-466d-9c06-115fe70464de.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 0x19d936ab48ad10d5c757c71d216587e862ab7ead882a3512ef2d6bdecfafd686. 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/DKADG2200447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801152b914c37002aa7386636162540192b34b06c5cb4df28e6cb3cec4455e6f. 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/DKADG2101026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814de178907f9c06ab2b61abbbbb676513a499f5bd7923dcd0fd2339ab50bc1f. 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/DKADG2100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58b986dbaac25e20e4aefcb4b2a5579df1d49eae9bf3114cbf09904159a1977. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKADG2300560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2037a4c2e2d9fc26fd2c68dbebdc163d5f5f4a7e5f6399b28681a99a77b16de6. 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/DKM3V2500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de039b5097e9f218762b7f7c8d41290ade680595fb5168bfb03f596d13283fd. 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/DKADG2400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525a9d95b4960f2e1e0ee540c45d0588521bc0a8d38ab98e53dfef443fb048fa. 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/DKADG2300658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eeabec13bb2bb54b9dd817b954aebac7e51ae5817c1d30ecd6b2c7ecbb4ee2. 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/DKADG2300480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7aed6caefdef3fa0d7eadf5c2692559140faad01357feaf850bc4a35956adc. 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/DKADG2300305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec9424cfbd153be8a4613084a126fd551c658495c64839648d3555c53030d62. 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/DKADG2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c3116e2231a0b022ffbb515997f63ca5b3da93726fa6af48741a489f521f43. 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/DKADG2201145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7843827ee66c303783603a3cbd4f3a8427ef9d601d97cbdd616eca4a29272f23. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKADG2200761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2b73d153f6b0c2f8aff296574c2ca39ce2282f2302e1d3c8b1eb443f155db9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKADG2200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2c5740382c4672d9f4d24393d9290bee1fbf0c37162466a9183b665c8da6ca. 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/DKADG2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5bc9748de60c806b5f8cec889905a39c65f69428ebf0443cb9284f4e1f501e. 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/DKADG2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e95b59176a19554b9efb18718d526ca5f0a2da2053296b77e53e0ffd765fdf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKADG2100602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d448b0b6133d5d2064a0d993e2f74cfec8f510c37a8b88683b875fd54d91e4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKADG2100362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116aa725356480c048b9b23fabd9aef127572dec7e69c724b7441a0df8c0b297. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKADG2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141fd61a3c05dd7bd22035dc8b53772fa576ac8b4f20d0324a2628cc5bafc6cf. 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/DKADG2000955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfee9778e46c548e414ca2761800719497b3d1777c025d0db72eedfe433da2f6. 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/DKADG2000450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d53996a04d43d41cf0d2602364c7579e27a51fd1a35dee56814ba3648188297. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMA22493144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a47c87df149a782a9ed9e83e5fe42ca84c2ca4af948435b1e0ed373776d18c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GX53U2373934.