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 0x2405eb1a900bbb2ae9d49832484d9dc6bb59d2b77af32bb0196974d6df464f06. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4c9ff54-56de-481e-9539-28850abba0f9.json and https://artists.proofprofile.net/proofs/artist/b4c9ff54-56de-481e-9539-28850abba0f9.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 0x49f4e2ea9a1bab3fd8ddf1c69fbe8444e1eaa62b3908c6ca50651e597725f33d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBKPL1831173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc885ceda4214844247275c8ff5e9a4a315f5b0cc066e90dab68dd563f5eb4c. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/GBKPL1831565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ffb52b722eadc6c538c6393672327d005c5846d1ee82a9e41f5ddbfb335f24. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USL4R2343770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d03064dc34fdd9d283b0ea5946ec927074b857abf1341442ede7410a98eac7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:12:55Z), 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/QZNWS2581025.
Forget Me Not (Live Immersive Edition) [Immersive Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffb30b9af7b62b3a034eb553e66a317dafbbacac4b6314c54936f56e665f813. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:28Z), 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/QZZ7L2590538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80740e8bf16f79c02d22a4c401510ae9d9ad85de52bec8539bfd57109caf0621. 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/QZZ7L2590539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e3f6d7a10fe7ceb0f27b91972edbb5c4c1cba74be478d3c68754698bf8ac10. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7L2590540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb34704e769042cc5aaef8ad76419f354e0372615b9b62895a9c3cb181ec466. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7L2590541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82100b1f7c91c9029fd7ee5237aff9767db4d470e216d8d05b587ed30714827. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ7L2590542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145fe84e490b040143b454ad2e46885c1d562cdea5fa0040bfe0218056c253bc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ7L2590543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd2d0a66e44713d2ec299c9e2f4589adf89c831e896b7bece97ff90d15e7a30. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7L2590544.