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 0x7316f13576ee42420dd7b6442a18b785aa26681910eec31af2fabc501598c17a. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04068ca0-d2fd-4942-8037-f47f08f3213b.json and https://artists.proofprofile.net/proofs/artist/04068ca0-d2fd-4942-8037-f47f08f3213b.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 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 0xf595afd7f05c56f7266e262abb6f441c0d293c2b36837e6a457b7b5b44bf3dfd. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAJL2592392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80fe60d269d0441faf4d67bd4fe4abc53a9183f40631f8e00ac8090f6251a5e. 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/TCAJL2592393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca9c3e0f117b2f78bcd24163bc89729475c5ce79a3ababcd2a0ce47b553acdf. 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/TCAJL2592394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4c8e3381422a7cf1bb81b1269c419dda617aeaeaf774f7720f765328db99c5. 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/TCAJM2592396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d90202dfa08bae4ad364548f54409ca4b2345bc8fa9cff7bddc09e9634a03d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJL2592397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1db96e547bee02ce7035b947dcfeaa466f5d819734240eba913e1ea7403d95. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/TCAJL2592399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7c249b81a5263f3b181805d8dc30da1488502d03ea1195766710b263eb94d4. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCAJL2592401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26bd127e9d36e99338aab0d865cd44ecb6927cefcc2825305ab9d9ad7bad99b. 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/TCAJL2592403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbf11521ff88c67214682cbd656c3b47aa0166930d7e38744b9bc78996c81c6. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAJL2592406.
In the Nihilistic Void of Meaninglessness
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd494b3b92c4425eb4349b321559920ceda5f1818b74f264df428c88e9c9053c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJM2592407.