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 0xba0a850a3cbd7327ab22cace318f9dc6cd303f6920763dbf24bfb50eca3d773a. 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/fbdefa9b-b334-4e3d-928f-d5ff280cd90a.json and https://artists.proofprofile.net/proofs/artist/fbdefa9b-b334-4e3d-928f-d5ff280cd90a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music Is the Key 2 (feat. Angellyrics & Fico Picolo)
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 0xac20217b0e0b6a936f6d3ffd27400c8a3c9855584619c49921d8bf6f4811000f. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/UKZGC2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e7b3c623e28870cf80132a58c45fb8be42ff1207c5bc7f25517c3ee95e15c4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/UKZGC2400404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03258e4d2ce443aaf63a7ab8f332e8bbf2d8386cbf69911cc9e304faee128d0. 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/UKZGC2400405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffc2ec7829730d04759f0f6f0db781d794a93c04e8e535d5d34293c959312b3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:09Z), 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/UKZGC2402219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e202c3cc8c46215381e99c7f6f30e05f090da15d92829c5c0383381f6bddd3e. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QM8DG2525407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0b6b525cdec34eb07ae8346ed394bd9da0f88d4c9c2f846fd354f9ab1e10e3. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/US3DF2531889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4c86679a2974f9d9a39b4ab71dfc6475dacc4bd1916a8e7bab9750ba7f37ea. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/US3DF2561072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51769e08a5c9d3fadbe3246d34f4083b1c5ce0542eaf7f6091a00ebf39b591d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US3DF2561074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42e330aa7c6089b687099f99c23060d351ed5f8a72654bccce3cfbd0fba87ab. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USANG2523080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285a17fe6dc251de3bcb1cd0d79eeca89ea9058933f4a419923f3adc128fa90d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM3DF2175213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff5390c6cc3e0e4ea03a4aa121c82823b74ed59911e11bcd3f81e90c945da43. 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/DEQ022118621.