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 0xffbf4075786ee2f3d8bea23eabfeaf578c570fe3479e9bc6243658223f9221d7. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc69349b-870d-49ed-aebf-91c3691028d9.json and https://artists.proofprofile.net/proofs/artist/dc69349b-870d-49ed-aebf-91c3691028d9.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 0x9af52297641d37d36cfd2c0fee01d5c2d66a8d82aa9c6e0198368148febcd3e4. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/UKACT2371961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d819d4b5f953ffa56d5a7fc9b4b135741e1d552066aefc53ebc217652b7c70. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/UKACT2375793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a4965bfa65a56f6d0a91eef7b88844df6a1a423379f76e9f177f81a59766a8. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:22:52Z), 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/UKACT2375794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a22e19f3ed580c400419bdecb678d9f701a76a9878b540a0ebd250709b71bd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:03:26Z), 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/DEH742505139.
Lunatic Paradise - Compiled by Sid Robins & Space Wizard
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39da57f14da27f68acdc72778422a4e7fa54cf4af41137937e19c74a89e57fe7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA082347899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9359ac5ee3ac59a23ac1043483b0b64591ea75e25189023c65806da5c5baf3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMHL2282804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60f924058159392ef4464aef0e00c6b18e7cb520209ca62b70ff534af7c78c6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2418370.
Timeline Fragments (Compiled by Frostbite)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685c17b6a1c79ed6163e05f71113c5dcb9cd2508274a94214aa6c9612ac6b039. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKACT2371106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd49d203e812a3e3b5c528eddb80a041533f1b5c483458770ddc14fc3b65548c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKU932401306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0771bdeda425201896ac18a32c00213e4fe22d4950a22a7d8241ac024d0feeca. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2417309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661e0faa31b2e0926380f19116503d51be20b26ba621fedad0f687102d57bd02. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEH742503206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff82792fe26302683232b7ce6fe1a825a37bc0bc21c2536a3250f587d7e8562. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEH742314484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ede6848b33271c181515c7c21543e18039c440799a6b1265f8f1c8b78a8364. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZS672438789.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch