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 0x795db65f4543d7d49c405975a33feac78c3d5d7760ee7b68e6a117e8534209ae. 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/dfc5bab6-af3e-4a78-80b0-721c7bffad08.json and https://artists.proofprofile.net/proofs/artist/dfc5bab6-af3e-4a78-80b0-721c7bffad08.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 0x40bfd6dfbd044c4f116037de03ebaa2af08ddb177beaa93391ff081207de2905. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:11:39Z), 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/QZDA62070756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f737ad6d36d8b45ed1d38b323c1c6d40bcca1c9364bc69226a63b88adc94b0f. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/CAHQJ2404648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a33b5a644abf59645f423c6cd6a39f9487fac9c890d0a3ccf41252561ed68a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZNWY2486475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aec2850a5c15cd580a73f872e90db5237eece6d97254e03ff7c92d3cf176be. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USANG2410018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f90894d28d54bb7ad15946fe6df90592aebb122ef6b934b0f5161a9201de3d. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:07:01Z), 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/QZTB22405746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919fbe6d92c43a7b419e1a11dffc7a07e9129a757c18bae357d60ef5673c3685. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NL2J92403403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7428aa408771b4fcc9f218a50896c91c496f193419379e077abea4b4dc65338. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL2J92403423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833aacd86a6e43356f3f5be4e02b2318d5db902aee0a331153cbe313fb2ba369. 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/SE6YL2402619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b6b80ff2e6d79905d1b3344375c03e596ed0cf2380ca395108aa77248d3371. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE6YL2402621.
Interstellar Main Theme (From "Interstellar")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b06fbeb38d6f3e3cf9f7f00bd8c4002c6fc8adad43a279fa881e82ea3d92b6a. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/UKG8V2500199.
One Day (From "Pirates of the Caribbean")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff487d9220302e5933c0613fe02bacb4e0638eb8e030a3e30dfd7dd4e1b38429. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/AUMEV2591397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ab6d87e24b0c2d7f9973b92e5fd62e56546e7b98f6f4460e69ce8df97295e1. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/UKG8V2500245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c7798295a334173ae76d4b708f99e8d43fcdda94cd77e2e964d9f739c231fa. 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/USANG2473964.