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 0xb96b4eee991619bfedb6580001f8047a277d1170b7c1ea9ce5e8917f559b7ae8. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74aeb23a-9d0c-4186-adb6-5bc9b185b80a.json and https://artists.proofprofile.net/proofs/artist/74aeb23a-9d0c-4186-adb6-5bc9b185b80a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Deep Concentration: Studying, Working, Reading and Relaxing
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 0x9b5240300f23080f6a2f5ba1cd6f157ef96d62a4e871cbb32d61f25ebae0ad16. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:19:13Z), 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/PLS922111172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e51600eafb0e019e4ada87b95179e1f27e9e40c6cba77dac4d1bbe40d418340. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/PLS922111174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca1f3ceb54b2d12e37d566b3f10c8c0daa864ed6a78f5873b8674c34017be4c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PLS922111175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2383f92b4661e2df480e32028abe8f581fbac15de478c48c852541adc986ef8f. 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/PLS922111176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069400c2eed5777bbb7e43274e0a5f2bef05fe9136a28754a8f3fe92067a517e. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/PLS922111177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ffd68f53aef56e79675dc97a4212c1f0cea099ff64f31d5bbbdb31d34eb25a. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/PLS922111178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4109455c47fe1fc34418b0c179ec900ba6d587baaf1f3322dd36895ee232f324. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:49:20Z), 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/PLS922111179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7df612545fd8e0d122848f6dfeaca100f64fac618c3bab0a25506908009efd7. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:52:16Z), 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/PLS922111181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72729ee6b4a8add2374937ba8af4c39a0cb20f07907d0e04f5e944b72a195619. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:50:47Z), 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/PLS922111185.
Before the Exam: Binaural Atmospheres for Concentration and Memory