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 0xa0f5383040390c31c800e5e6683f497712ab50870265389ce1878ff161eb1823. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80431851-c0a4-4aa8-9772-72cae1193768.json and https://artists.proofprofile.net/proofs/artist/80431851-c0a4-4aa8-9772-72cae1193768.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 0x9a24b9adf1e0c0a2df158b46ee63c8644b09c329869da328184138788b15d988. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES62422518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e214347e62b8feda0a780a89c228af17ad3a25cb806998d1c2889cbb990012. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES62422522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a44c60f395711eb448e2d2186309e4a3707d714d11aa41765e7b4a7a20d6d03. 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/QZPLR2357143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed553200344cc6d800e9ce15e9bc6b677e90c29d5f075d2c23bbff1821b779e. 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/QZPLR2357138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a44c60f395711eb448e2d2186309e4a3707d714d11aa41765e7b4a7a20d6d03. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPLR2357143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97741c23f1cff7959b1a54fa987bc6f57711bf42daff29f6114914ae5a0d1fbe. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZFZ22433374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318d8457da5c521ca026b8ef46674c247898c2042636504f4e95d0eb00ea4484. 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/QZK6N2397503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec5bb94cca829a9ccac9861d12d8035819794c524b06d53f199c4c30ea5200c. 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/QZDA52319566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00af4cbdfaf08775b7de25a6ab1647ca36101f064e2266534dcb7bed5047e4d. 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/FRR642401059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107ae6ef2fcc30ffb6745bfc10e1c4b99a6165de6716595cfc752138d543f587. 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/FRR642401503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597b9542565ede6645257d3e540a7cb4293f343973530d75f2bd54db88196c87. 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/FRR642401061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c59b3f55e084109064a429b3344d2f4f44a2a917a2072bd98c867953d25b62f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRR642401505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00af4cbdfaf08775b7de25a6ab1647ca36101f064e2266534dcb7bed5047e4d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRR642401059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0358318aec38b21cfde2d802a081e31861e88ca58cbe070458f20da0c8aeb211. 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/FRR642401509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c59ab2d73877ac531a5acd7470c310865ddb5235f717bb99fb8228d9191fc57. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWFH2361824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7ae41cc03e658c7a91ca2f493616be5450879fd0812ef26d67c22ea9eab591. 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/QZWFH2361825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27530d30f97e0d006452bc44c55a2b639a3d935e3bef28776c22d3362169eaec. 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/QZWFH2361826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2afff04ce36425259697cce3bfe0fcdce2970e511d37cc9b875bc844769439. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWFH2361827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189fca37354ffe1f47b13b90b3182e614257bcd099853bc163837183f1f2491d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWFH2361828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd370140050770ce33c5ac64d15351323dce1ccc69735462fc05fa01d5cc4aa2. 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/QZWFH2361829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa5e750ee728f5a94562e4cd6b9abb4057b746d45ec527ee7afec14d7495c0a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWFH2361830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c6ef208fd1f40b5faea9ccd086a41251dff41eba1063c770c82522b740696e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRR642300999.