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 0x5d249288bac97588412bcd399562aece57a241f75e7d30a06bceb420c45e0389. Chain 2 (Bitcoin): anchored in block 953820 (2026-06-15T18:35:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fff57535-12fe-4c68-bee3-f20b493d5d58.json and https://artists.proofprofile.net/proofs/artist/fff57535-12fe-4c68-bee3-f20b493d5d58.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 0x2450c25e45a7c84446ec234510a26a272506303cbce6c9fd8dbe6430e00b2309. 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/TCAHF2319936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acb1a9b19eb4595be9b1f455306d8573292120070c6bec81f66d04f16011e4a. 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/TCAHF2319943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28caeccb5a9937fa944b16065c83d2b236c182ec01401d3c3e8ff321f235888a. 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/TCAHF2319952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7ea5c10d74aa567edeffc1a4acdd3ee2b6563825a366df066bfacd8bd7d440. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAHF2320009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c17ed5ffe1954eb60b9994b773d02121dc874389efde6780a81e5b0bfff6e37. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:18:01Z), 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/TCAII2408428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ffac2342bba719da3d38a2735786ca010c64329ee0f53863fd098ce62a61a5. 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/TCAIX2494272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b464306291b421b11cc07ff35c1fdd2480da3a72df56b0edbc6e9147d1b271b. 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/TCAJF2515058.
In the Shadows of the Night Turkish Delight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b969e0611849c71efee9090656abf0bc68c4c84a4021c32368f0785a4fe4de. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:06:08Z), 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/TCAJL2555451.