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 0xf1369c7b4f00b6bc28c8b0bfe9d0706b161565265b1956a5d971e28ccfd99d7d. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f25441b-42b8-420f-b564-280a96180bc0.json and https://artists.proofprofile.net/proofs/artist/3f25441b-42b8-420f-b564-280a96180bc0.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 0xa15ebf723f21f4127f46fc2731c028b75b99a0e6b3a5704b1c7d5fc519ffc5ea. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:17Z), 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/QZZ762464942.
Is There Really No Happiness? (Worlds Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ef5b1b6fe780b307bf5b3e9da3b0ccfe140ee05589bf74c254e73998b57486. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ7L2484695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50c68f428f7f7a10aefd2185d4f359a4693803b8f2e35e9291a6c3759a0554f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:37Z), 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/QZZ7L2492183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51522bab35141c3d24b5d2c856ddf82daf4f99542ea3f3ad5d6467de84359e6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ7L2489205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00297e22d0f2ea0b51fcca072ed2f64138af20e5e666ed1491aa1e7104e01adb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZZ7V2475431.
Perfect Pinterest Garden (Worlds Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b222640aeaf699d5bad45beb606c8749b10e704012f63b054f2877d7c1205d8. 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/QZWFT2519062.