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 0x33b6b3639ee730b7fd00876a6409e39f2cbc460f3fd8558c75172ccac374a307. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b657cd0-9eeb-4f48-860a-0cfa263a345d.json and https://artists.proofprofile.net/proofs/artist/9b657cd0-9eeb-4f48-860a-0cfa263a345d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
No Diggity (The ShareSpace Australia 2017)
Too Much to Ask (The ShareSpace Australia 2017)
What Lovers Do (The ShareSpace Australia 2017)
Castle on the Hill (The ShareSpace Australia 2017)
Jessie's Girl (The ShareSpace Australia 2017)
Attention (The ShareSpace Australia 2017)
I Miss You (The ShareSpace Australia 2017)
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 0x760d0cd3ace78fabe6da0ca54609062fa3f513f0ce5523073bb930310a2ec30a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCADN1887952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12b6308a250d671f4e3fea8d3bf62265564251a2ddcbccb6c8d1f88421938ba. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/AUMEV1909913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed560611fdb9796dbfe29b91227e5628ff9b41bc44fbe011491c4de1565a360d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/AUMEV1904460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57313abbb2aa382bce81b2e1cdd898c577db432b2925b6b777cdcfc8ecdeb4ab. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLQ8D2100218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd47c7e6b286f98d9b9cac7e34d278e92c52242532cacba07667be8bddd9d28. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLQ8D2100256.