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 0x02c2ba29535e790c6bc956ced197733d052aa19ecd161e49d1e9ff12c85da36f. 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/490651d1-f4bb-4f29-b61e-e90297a6b0e7.json and https://artists.proofprofile.net/proofs/artist/490651d1-f4bb-4f29-b61e-e90297a6b0e7.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 0xd01add9d7e1ab1769376ea66bfea2c2a0b614a56f1e7e488cd40abeec14d0d55. 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/NLT2H2300793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f109afea24c983f835ec6d51fc3df8e514295305cc7a06fb4777925d9da7c4. 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/FR9W12411311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7fcf3bdf913035824c473434b349ffacfa76f83d64792d91fa7f386b2936d5. 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/FR9W12443424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fce34896b76848221746afb74f8e5ea371e43a7d567d35b2e521f7f6eb60d57. 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/FR9W12443423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f00cc8706819a0ffe6696ab20cc9bae6e33a0823093c58997d6976762ebeeef. 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/FR9W12443425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7fcf3bdf913035824c473434b349ffacfa76f83d64792d91fa7f386b2936d5. 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/FR9W12443424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f109afea24c983f835ec6d51fc3df8e514295305cc7a06fb4777925d9da7c4. 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/FR9W12411311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c38d7ed82eed2b34bea58182f97e223324635b91a3b8cd7d6989fed8a262f2. 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/FR9W12415673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8c00222f9b9535c9dfe72f2424f859a452c66772c4043e1a53e57669d55873. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NL8RL2408212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72abf2be3f20a5b670fd72fea762e12c85b0ab6d0e69585fd96e8fbfb14d7fd8. 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/CA5KR2246224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b5d6d3813c3e9a8366c6117282e94afe79a1049a3b75f22248fe146fda7ca0. 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/USLQ22180430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd180f0d084aed3b8d256ec11c9382614d58f8fe12f939275955dcd108eaf00. 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/GBRKQ2194163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562d5902e76010fc01fff86758e509971c914d87e534ada256dc8f6cc632313b. 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/USLQ22080203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb621755939281abc81138da8b1685229e0f114a13f8aaa2ccb0174b8397eeb72. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFZ42049197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0b6b7f3012ec93dfebcef8f87d40451cd1323b2aa20217cd51c3957b73123f. 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/USDM31809501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e77f0b296474852c5222312fd34d374a7526ddbc74133e4c3f54a8b8c61496. 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/CA5KR1556443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef7f79da3ddf9473682c281c62ab5ee3db8978b524bac45e7e5bceeab8318a4. 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/CH6541710402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e77f0b296474852c5222312fd34d374a7526ddbc74133e4c3f54a8b8c61496. 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/CA5KR1556443.