Zap or ZAP may refer to: Places Zap, North Dakota, U.S. Zhuozhou East railway station, China Railway telegraph code ZAP The Zap, now The Arch, a nightclub in Brighton, England Great Zab, a river i
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 0xd40d8d0f39c8b0bf63837d16337b3382c8311ea682257644a5d48dfc37a39961. 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/b086269e-caac-4d30-b75b-c810c4499a3a.json and https://artists.proofprofile.net/proofs/artist/b086269e-caac-4d30-b75b-c810c4499a3a.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 0x7e99997a745687a55d0f890aa215f28c7dc13c632e8a65a4a872a7d03ed46a04. 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/GX8LD2349670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcc7129082464afc8b9c3d0542eb9cee08316564f34e0a38f0e8693ba15f76d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMFME2074534.
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 0x99daff0bb9e5550c64411aa74b30e78f492c6509f56b46406e38e107d9a7f946. 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/SE5BU2361388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08b272a1a73142d0632f858dcbac85178f26339e62e0d25d4f679dd6e85129f. 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/USA2P2351962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b454dff9b8db48a9d0f27a1fa1a56eb0ce52dce2e4bb3bcd22ae921706ab53f. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USA2P2129853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35aad6ca0dd524d02badcdf7bad4a9a7ca859510956725639423f89f5aeaae6e. 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/SEWLR2216601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6754f73a2488f7ceb61f7aed7661e00e92f70afe28a57ac6c850e48e54cb844. 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/USA2P2407471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6060ff88adcf4a94c601737cd5028c1d1fb704990830370cd19164a0bca82c. 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/QMDA72290289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82847f0942ccae49bbfe1fade94fbb0944017687c9793a72ece64351318a8e72. 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/SE3GO2411901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc939c1d05a86ee39eb9298e73fbefbc534dd4041c764ee7a9a742c7461a41af. 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/NL9KQ2390398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb9a367f436bb837983c79d00484865bb96d5b6139f8799924af6f8f907dcfe. 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/CAR072400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e810964d1c597891b09ff224a8d8d4f9e74b6f5a357a4c710d8fb2a488d356. 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/SE3GO2309401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c1a7d1e40344a5c509fcb9f82e76aac293f57976a6b18bf8e6b1259858c6e7. 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/SEWLR2215601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9814a79396846bf9850c3345514cfbcd3c9115579efc712da7d46e68c339cb2c. 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/GX8KD2374999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470adaf70c7c173a5e400971b8c6da87277edb1e33e0bccea42f85b39a1b644a. 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/GX8LE2213272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940c8fda42add774468204f52d36018866cc648b9e96fc94c9cff5598427c327. 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/GX8LE2273646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde26ce22b2b6c992617a19f84afb061a763555e91a44f8c17c367da7a169996. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMBZ92283236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9821da3aaf1db9ed89e6b0f60727b07df9a958e418e690995e3b4fa85b3100d. 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/QM6MZ2144239.