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 0x7cbe3ac595856d81eceea93f48a16568edecd393d980dd74079ddb5ce0cf93b1. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86a24694-7648-4d0b-8253-384916dbe46b.json and https://artists.proofprofile.net/proofs/artist/86a24694-7648-4d0b-8253-384916dbe46b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x340353e271844118fc77b818db733fe44dc2f29c9c7dddce706ae85e008ab980. 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/SEVKF1900402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b41f053b53c3e4e53870bb704b46f3ec7c6f9486da3b7a5abefb4b63fbbb472. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEVKF1900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a190230d01776a0672ebb0d02440f04b80934148d7038d5e6d55673c3ed6bd. 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/SEVKF1900405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d830da61962519be44c4f026c204d4ab7820833f2f26d7536c171c4aa7426c9. 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/SEVKF1900407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249907ff008601ef1cdb670bfa92861ca2a64f9bfd01fbc8457444a5e2db8451. Chain 2 (Bitcoin): anchored in block 956809 (2026-07-20T11:53:27Z), 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/SEKVF2200701.
Old Time Rock N Roll with Linda Gail Lewis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c681e83d4b3308d69037b341e707cae691847c0b6b17bcb35f3cdc44451a829. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:07:20Z), 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/SEKVF2301601.