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 0x9e5fd7066d464bb79223581cd6642961a26dabcc2903e4d6fb593c12fabdafc1. 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/834eac6f-cb24-4bf1-a5b3-2f3aac11bd1d.json and https://artists.proofprofile.net/proofs/artist/834eac6f-cb24-4bf1-a5b3-2f3aac11bd1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ballroom Dancing Meets Popular Music: Cha Cha
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 0x1b0f81472c053ce2fb6d4bc93d65a2fca6c0c6cc6740bcfd784d39574633724b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMVRR1439351.
Ballroom Dancing Meets Popular Music: Quickstep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89f4ad3aa223dff37b48827736443738e5c2b71f1adcf813e905aa1ffa6ec2c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QMVRR1439508.
Ballroom Dancing Meets Popular Music: Paso Doble
Ballroom Dancing Meets Popular Music: Jive
Ballroom Dancing Meets Popular Music: Samba
Ballroom Dancing Meets Popular Music: Rumba
Ballroom Dancing Meets Popular Music: Foxtrot
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8485985b120431a76de8749acc7169dd569f8225e9ed7459241aabb20a82b549. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMVRR1439382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eee0eb7f8c26d0a4c29d503106a3a6fc0c511b2a91ee90fc710a103e9ccd013. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMVRR1439388.
Ballroom Dancing Meets Popular Music: Tango
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc7d197e55b156969a02deeb3a5480f1b5cc8186b5ec96b1789378b14d97bfc. 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/QMVRR1439514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b28ccc90015c9b53e983507fa3796d2c9d02f21e79486fdb667fd4b1eb2858. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMVRR1439527.
Ballroom Dancing Meets Popular Music: Waltz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66f9d44ee85bbd32750cf2c070e2fb2f652efc7e57d91536e4b343faa4add1b. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:31:32Z), 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/QMVRR1439541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a861c70a84c21034cee96823cb0d45c7014693ab3e7dd163316899abde0848. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/QMVRR1439543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb070b4c3ab5b8d1420b1aa42fd6839cf4e29d0203fcb1da4b7f33d85a0be1a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMVRR1439536.