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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf162eb52e24905dee2119046c0f8dba7dd1e99ce54fe4c60a50430ee139e4d. 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/6f0cc6b9-15a5-448a-8da0-347169666cf7.json and https://artists.proofprofile.net/proofs/artist/6f0cc6b9-15a5-448a-8da0-347169666cf7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
We Used to Get High & Hit the Drive-Thru
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c7cc3249d5725ac005b92e39042e537caf8752231f505dc893c97aa08dd09b. 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/QM4DW1794052.
It's Not Even Summer Girl, Why You Causin' Drama?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8099ecf409468144aed525d18af0bfa5c0c0f297ee063c90b70ac12b232b449d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA71835098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48aeb53408fc1019f1e6ba2d618889bb11f0a28a2f454c4c4fc4d17eb209308. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZES51824037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf142b190d224df3e282b99bb42fa5889150407079501b6339b7b733950c18ce4. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZDA71989071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0a12a2884025b83b243b9696d5a96ae5ec8eb7148795643c1d54e790530388. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZDA71989074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd342415bf94cbfda38cc0f22a8f20f84ea661c57b0ed6a8d2d7d39827cad13c1. 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/QZFZ21904538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72f7270459a22677653e497fcc1fe2807a54d8d63d618ae8f181fe393cb4812. 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/QZFZ22031699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f641b2399d4adf06c3cbf9e8591c68c7e11e25c1674d971c17042930dca47f. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:16:31Z), 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/QZHNA2334115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c918fa91fd7246d81806dca448a3f07589cd4466df04f8916b949a08baae0c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZHNA2334119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5207cb029f0618772a0ce1a0163709d6a8f9d54bba5634bed3ce81bdf3a3fd8f. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZTBD2323943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6a9d94a2e446577fe6df8fd15edaa054780a5545a66779aa92bc0f5e306779. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZPLS2481953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0188006f550f5ab4866a51447e37351991731e25541ee3a3a719cecd68d7e63d. 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/QZES61866651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1b556bca14d877ff2254a66142bbc92953a0a8b0ea8795150680aa7ec7955c. 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/CA5KR1801761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0be753bf8671bca89b7fb8727e0a1be3b667317d1f4f900b1158d0a9842ed5f. 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/QM24S1701121.