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 0x1860b0e12c2cf631cb03b09b594bb8d4f34a8811d9565e03b7440ea4927cb28c. 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/2a12eb98-c82c-40a4-8bcb-e92bb86c01c0.json and https://artists.proofprofile.net/proofs/artist/2a12eb98-c82c-40a4-8bcb-e92bb86c01c0.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 0x93028f58ae9c04ec133e4d724e10e54d3d1ff205af2ba77dd2add1977f1713d3. 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/USRC11701388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c45ed8314818129589943b22822884fd6965d09dc751dc5705219dcecb3ba3. 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/USRC11701392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795c7afdc05cdcedc545f10fc36f8aa1f3171f07a35e8f53296ca5ca6cb8016c. 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/USRC11701394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408d12e268efbe616124ea414b58e212d240e0c35553bc3079569d6d7bc5336d. 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/USRC11701395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc84d75931c67eff904be0068695d7c4b2043e0aa95c5d2baf2c7f2ff39caae. 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/USRC11701396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356923efd3895181e5e2e5f45446448118a3764d5f100686ab7af1f4445e4f2f. 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/USRC11701436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e39de0f5b9cc92355355f9cbca949998d6070dbeca361b837558f24ebaba0cb. 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/USRC11701437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4237211e6472d79252998c2f947adc45c8f544e7cfd19143dcdbd297c0900ab. 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/USRC11702084.
Future Friends - Brian Robert Jones Choir Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815042f3f7da0f0d72a16b5380674056820845f599a2177d303b0ea0c1c7415d. 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/USRC11702085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93028f58ae9c04ec133e4d724e10e54d3d1ff205af2ba77dd2add1977f1713d3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRC11701388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c45ed8314818129589943b22822884fd6965d09dc751dc5705219dcecb3ba3. 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/USRC11701392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795c7afdc05cdcedc545f10fc36f8aa1f3171f07a35e8f53296ca5ca6cb8016c. 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/USRC11701394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408d12e268efbe616124ea414b58e212d240e0c35553bc3079569d6d7bc5336d. 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/USRC11701395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc84d75931c67eff904be0068695d7c4b2043e0aa95c5d2baf2c7f2ff39caae. 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/USRC11701396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878c3e4035355572eeeb53356108afa1053ccf22fe26b6cb58f640b3dfe965c0. 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/USRC11900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10eed001a2a13be2a851aa2b92185f0d93eb1b41edea6eb0693788839382105. 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/USRC11700183.