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 0x452b800aed95e4af28c67e7dbd7bf2392a63f8c4fdd2a2e4e66303cf5befa0b9. 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/4705f9a1-57d2-4fea-9713-c656d536c2aa.json and https://artists.proofprofile.net/proofs/artist/4705f9a1-57d2-4fea-9713-c656d536c2aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
S-Five Productionz LLC Beat Tape, Vol. 1
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 0xa8147b33947a87810315b968dcf59d094f4781b811e6d769bfa394ccd06f82b8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZPLS2204441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59d9e1faff13fe9fd54580e0e1b4a6e5dd36eba35dd4b9f29401f0062bf84e4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTB42298064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7696469854bfa1b64f2481d9b6dd5eef06333c16eb1926e124601fa38bf8cbb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZTB92242631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712b09425b2fcf3cd225ef1cf7aeb02176f19411f45a4ba35022af9099b101f0. 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/QZFYY2387523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9f349fb8ab42d030cb32db4086ca668fbfeab2b9813d205c63a5f7042b4abd. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/QZFZ62326761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30efb24a3bec4c42b062eb7e2f60fd10721750225e4b33297f9365bc67f93b3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTB22396432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8d18a7f0ee8937a9e10f3facc17cca527b5fa00cf4d4d362a65865bc63b915. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZES92409044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cc9d7a48ffc18bd2c33868a12d7f6e024e749db8297b48d61ac5cf112e272a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES82464985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7112277ab2d28a6608e969a2c246bf0bbe7ebc98b1dfa16a04a1f4a6db5667cf. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZK6H2445977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4469be630bcb0528a18ceafd31e7441ed6566ca06b644288a6015eb6d2f2a5b0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZWFP2436201.
Yall Be Doin 2 Much (Stop Playin With Me)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf50f4084f2445662ff78be62db1e5ca4aa8d0e655592fef70b82f16334e329d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZZ7W2470209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa576eb91a02e4e4f080ef3cd3538232c1b0d10dd572bc30f5beccfe04e300e6d. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZZ7X2480934.