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 0x6e59b847a2180be8bca5a7355790433377734d6784a9dfd6d3a780f9ce734a1c. 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/b36efbd7-5a1e-49f3-bcb7-e1ca58c7c10f.json and https://artists.proofprofile.net/proofs/artist/b36efbd7-5a1e-49f3-bcb7-e1ca58c7c10f.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 0x245c08c8a2ffe319af5d045b58073533f9dfa6ede4f0b262c5d7264f626529ff. 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/QZVUD2300109.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d214f31d8bb4838f907387b37fd6269cc22b93afefdf7f23a0b3c058d01274. 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/QZDQH2386879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73f8cdd71a93cef18cb7d640866c06610ae7d1bb1bd4441ff45a221a8625a39. 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/TCAHM2354413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a49d775a2c8b2d8d7302d45c2603d5a561fdc5c1de244988cacf1af852e6e29. 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/TCAHP2356769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6867d8d0defb655f095081cefa487d63c4d4dad2ba9abf89a225a2c91db667d3. 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/TCAHT2326972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8068e7da12f10d302d773ddaaabd8344de3aec188b7372112b4de537a91c6d6. 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/TCAHW2475532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a49d775a2c8b2d8d7302d45c2603d5a561fdc5c1de244988cacf1af852e6e29. 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/TCAHP2356769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe710812f5c0c921bb9e3f7ad37444376ffcf7d16725438190b0e758a17cd232b. 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/USWL12400468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65aed37fdab737afab88d35a3148badeb751b2454f35b18347619e46761b1231. 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/TCAHZ2408735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc84679b64e8cd33b0b4a8f1d57d757ca7b06b92796785caa354a4ef27af18ef. 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/QM4TW2493865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa287630827d88633256cb8a715d68b0b34a74852c517b4362a17ab613c70e8. 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/TCAHY2475847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622918aa75a75d6f7937a29a970e14a87025a0256d83922c9b580d177392eb21. 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/MXF152400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da2f815073a91f24ffa7afd245e7e72c721b0525950dd92058c76fe953ab6b2. 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/US3DF2436616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f22557fd72d28a53534bb1b7f1d24c08622321709b3c00c1ab5f77d721409c. 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/QZNFJ2402769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa287630827d88633256cb8a715d68b0b34a74852c517b4362a17ab613c70e8. 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/TCAHY2475847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb347df63c620237faf22ce0d8f8281fa70c45ef1c0d56658f3362b89fc42164. 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/QZQMB2105427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a1efd3a5bbaa1fd8cd0d86ad9d3742463fd9657459d83ee95ee1dc2635f607. 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/QZQMB2104226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78cbe022d4cc78ff0a08151cd50e5fcc430166ddacefd1a571db325dfa392a4. 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/QZQMB2102733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6a45c055719a35824c7257bf78863977cce9e4157b452ae79572f6026fa375. 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/QZQMB2104397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98103f4d88b9108a8251a1431daf83cac0ded01e1abee86508a67cce259fb593. 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/QZQMB2104754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9055b4958447258ef6568e3697ebc2d9afb6af7ef5618436a39cadf73fb3adbd. 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/QZQMB2103766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92035d0e1a40dfb320d78790f4a83ad45a311711f6ba69820fb576056fd045ff. 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/DGA0M2414221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245c08c8a2ffe319af5d045b58073533f9dfa6ede4f0b262c5d7264f626529ff. 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/QZVUD2300109.