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 0xc594b52564f398a0ba11604adb55f707d9e45efaf5357362fb39e507f9380d40. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc947127-52e8-4c17-be96-b9b6906b5476.json and https://artists.proofprofile.net/proofs/artist/cc947127-52e8-4c17-be96-b9b6906b5476.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hoek van de laatste zon / A cause de vos merdes
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 0xe00035b58c4ba2ac7eee41467be4016438cfd91ba684f923323c49517a5c5d6a. 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/BEJP52000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd13488a31d779b401187174273acc5e659b7691116699d65a747b86794231d. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/NLX1G1800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafe451a49a7d6b974ebb72a21e843d01076e053121544b4a039f7f3dcc2d9eb. 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/NLX1G1800094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d9fdc7bedf7fb2211353d0b06e65ee23d1b94f9b745d753ccfe7c4d1500bdd. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLX1G1800095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00384b34e57a8f1e3ef22d29d77b8a18d69addf25e0c505271d990facd8efd5e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BEJP52000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefc6007161793a1dabad691f88ca8ca0f2dea8d0af71553abfc5f164057ec8b. 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/BEJP52200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4df95a0658916b1380548c823743d0537c643cb3461e553a137f109ceb7ccb. 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/BEJP52200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063887e13d9362d3db63ebe42c80f6c3d8c4e1ac35d3910a33169c6a8b6e8340. 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/BEJP52200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a59fabd353d12165f8cb535cbd37fb97dc0e7e4cd7b1ac66f5e0bab0d99a81. 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/BEJP52200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eba6217af6fa617c29376493a30c48de7e39f01ad2a0b509ddf1fe091999b05. 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/BEJP52200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce849984e17340991e2fea2a1e6299e9f99e236466d35b8ed1c0c82c0618595. 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/BEJP52200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec049d0c8265773a8ed97c4e5629f882a3f8da3e40f4d6ab671256d5712cdb6. 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/BEJP52100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4823adbca8172e5f85908d0bf04511f9b496f6fa3bbccf49948a80d0ebad377. 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/BEJP52000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8aa5438529bfcc4c76836e2bb58bf15f730451084735a12ae9eed2da679b27. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/NL1GH2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45c7b896c06ff7c0f690671c7347799c7ab2cd0efd30e7c6a4758d87c7da955. 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/NLZ8C2200302.