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 0x562239b031dd390928541e02357c41d62a7fb8e2619febf74f27068d4a266bdc. 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/e6cf4433-5d97-411c-8cc7-3a044cf72022.json and https://artists.proofprofile.net/proofs/artist/e6cf4433-5d97-411c-8cc7-3a044cf72022.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Preschool Action Songs 2 (Ages 3-7): Pre-K & Kindergarten Music for Young Children’s Creative Movement, Exercise, Dance & Motion
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 0x2d2cf84568122738b1b39adb5ef8121555316e81fd26f8a63d9802c9aa5cdf63. 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/USCGH1340092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4e4f1eca531ae6d66abaf6b27f550d32197a0955eae73fe8a152c9a7eb1ba1. 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/USCGH1340100.
Preschool Action Songs 1 (Ages 3-7): Pre-K & Kindergarten Music for Young Children’s Creative Movement, Exercise, Dance & Motion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d4dc545bc070c7526bc1ea9afb563f27694cc06e9686edcac7ab670406eac6. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:24:07Z), 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/USCGH1339921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace8bbc18d0574640a3ecdd68257a7f3497cfb404aa8d8e50713f09b5b875d8e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USCGH1339923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb575bf7121768028795e4e0c0abef92cdf9265d0c83385c30c78b9e6af784d66. 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/USCGH1339924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3623d91393716723d7b2c98a5e6af0d39401322d67dbf24d1c0ba7940be3748. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USCGH1339927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ecc2dad507447d44300e7dadf67c6013f831388f6f99116fe835e9208af7a6. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:21:30Z), 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/USCGH1339931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd82dc61726bbeeda2fff2c6bae3b972086525c3ec35be83a179c1fd661fac9. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/USCGH1339932.