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 0x4ef8b4ece3c8450ddff85e95e2d5949c2ca4a302cebde751bcc40de939491592. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9a31c5c-905b-4f98-ac90-e8f8cc1c800b.json and https://artists.proofprofile.net/proofs/artist/c9a31c5c-905b-4f98-ac90-e8f8cc1c800b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pan Jing and Ensemble: Classical Chinese Folk Music
Pan Jing & Ensemble: Classical Chinese Folk Music
Tanzlied Der Yi-Nationalitat (Dance Song of the Yi-Nationals)
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 0xd9b671b13b82a354fc94325c0ef6ddb1adc5ab94ceaa5a3d684eb83b2e5d1320. 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/GBCKG0501121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baf00c6b659552cc24d0fff93e7c8136720ad2e080c8f7a6ee80138e219420a. 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/GBCKG0501122.
Uberall Hinterhalte Auslegen (Ambush at All Sides)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02d3f29f75f46d013a8bab6877c7c5a7ea41ead2d0ce872214256b7d5cc2fb7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBCKG0501123.
Blumen im Mondlicht in einer Fruhlingsnacht auf dem Fluss (Flowers in the Moonlight in a Spring Night on the River)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98c46842b6a211b13a2f1f6cf86a2d31310ed472d253beb81a98f4a86be6f75. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:20Z), 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/GBCKG0501124.
Vogelstimmen in den hohen Bergen (Twittering Birds on the High Mountains)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ee1ddf3191c66b017c04f951e329c20be2eb675a30627831c08914e790f314. 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/GBCKG0501125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d822b81378e1eaf8b0422f04a989db0ca70aef219bc5b19635bcb21e4cc193c. 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/GBCKG0500424.