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 0x0712f56fd9a9af197ea8c394295e9f1a55a82ce1385330092773294dbfa0e48e. 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/50e1b43e-5cf1-40f1-973a-75bc72fb35ff.json and https://artists.proofprofile.net/proofs/artist/50e1b43e-5cf1-40f1-973a-75bc72fb35ff.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 0x4ee2809e38e9df10aa7aa438662bef523f3c3bf1f66c66874fec074de8c6d82a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA82580437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22ddd9bc8caf442ac5e6b2242c8629e355c0c0d0e23c992cea974fbbbbdbb26. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZDA82580438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c0b4b804b1ab926d504d39e6465ee74e941418fb4c0adfd589c198e5689e63. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZDA82580439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0113b02de1d2455295ea97bdfc3c72c50e799f903a8909c7c84ef2bc55bc068. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZDA82580440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806a8d812774c33a256b78b2759d83f3e2d4516c735e4d56ed6635fa234cb665. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:59:14Z), 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/QZDA82580441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9362434363e94854cafcf20952ceee8d38d8fe461c946dba36ff6b426a9555. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZDA82580442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b540862f92aa833448608a9a6efecdcc084d6d0e064c14e38e8a32e7f885552. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZDA82580443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf75eb9eefdde044b0e27288cc398a506b0ad71231b1791c0248f8f7890de9f9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDA82580444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74297a86883588707c2c091c4f7e7f17a18097dad834ef10c247a28e01923071. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZDA82580445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367b294257d1e9a13abc205969c47b32cb2fbef4f3e3fa18a26cb7ff6098bec8. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZDA82580446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4435d59262fb9e801e785660aa6d8cda5f26fcd643485b3fbd4e5b4eaf06d110. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZDA82580447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf961ee84649d56cedefc30ec68151662e828fd78ea9f88a7750e1a6392c2b848. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZDA82580448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27da0493c7f35f15468a729fd1546afd73a96c2e3e06c87005c361c9084379b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA82580449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3719e52731994d98fcd9b47c73b62f00f3e63027934f180d0035bdc688d7e2d. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZDA82580450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd801bcdf654aa04b15556d2795ffd84f5b6910a653670fa1db60c1bd8eaf473e. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZDA82580451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04551dd68a6b3f107a8f5f89a662190b8716ef7ab9ea07daec2b0fe2ef2b295. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZDA82580452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1885c2babe51bbed99588e4d42afcfe14fd9a6c1ef4e321d10addb70ef7d4d8e. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZDA82580453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8056bb96c068d8e9613ee8d1d4cc53bf3547ebebdae3593f1fe34f07aeba9820. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:10Z), 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/QZDA82580454.