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 0x7487591c68d2742e97161c2fd80ff1831d3c88b5b8f6f129d94a68e8ee57223c. 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/75f56220-8305-417f-b4b7-e7093660b2d6.json and https://artists.proofprofile.net/proofs/artist/75f56220-8305-417f-b4b7-e7093660b2d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Studying Music: Focus and Concentration (studying music, music for concentration , music for reading, reading music)
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 0x87732f5ba7a80bd647222707746434e7e71304210aafd5c1cea27ac8adc23efc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITS781701056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e61b12ca61d9e4ea7ba1ab8ae26fe5ae773962a485cdcb8595dbd16d81be7a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITS781701057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4e7863f3794dab04ee4b4a954f22922d22d5dc8d6808dd31e51b435636a73e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ITS781701058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98013e6d8cca3721ed053157729efd94f98c866e46c5472c4279e5148605483. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ITS781701063.
Deep Concentration (Music for Study – Study Music – Relaxing – Relaxation – Music for Concentration – Deep Focus – Chill Ambient – Music for Reading)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0039fb9068a66943d256bc366ad2500b941ebe46442a0157e58c404a3ca74e31. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITS781701262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdacafc02eb0f4bb4342ce599cf245417dd759529b6b21305e1da3b9305fa8f4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITS781701263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903f7da11e3e174c40036a2709670bb3ab537206a25e3714eceabb0594dd3615. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITS781701264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec49631a432ac77801905b4a3d9b20520c1394e8a80a364a339f98c3ae4a3f4. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ITS781701265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b2a2da060f280bf77545f446feb6ec8e3beefe5eb70ad895ad9a253a927cae. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITS782300658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1ab68e762ca0d6f806134766faa175dc68787646572ee4911372d79eb350e4. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/ITS782300659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146ef04281ac72f074815f4ffe684d859c9d9a60dee962138d3ad6d358687d9b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ITS782300815.
Sleep Peacefully Vol.4 : Modern Piano for Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dc77eb40bde5005af95f478ad21f72cedcdd303ec9b6a16426a393a9b5239a. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ITS781901035.