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 0x4cb1a5fe38d2b58999aad8407b0a8baf47ccbe143865c7d58c28b821d8d64efd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8132b116-b37d-4eb1-8d96-3dc365dd39c4.json and https://artists.proofprofile.net/proofs/artist/8132b116-b37d-4eb1-8d96-3dc365dd39c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bella Ciao (Laguna Mix by Gigi Masin & Leo Mas & Fabrice)
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 0xc61c2a5e3e29b57a461bb48a1c65d7aa9058e09dd269c69f6a179d8028452b4b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USA2P1831359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57e523e40f5923d843761388e28c08fdb7b70309aa124f34fba39a8b00c93e9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USA2P1862384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57bae572fad1ab7fbf187a2561025ba167cbb6de8c1dfbc490167632e40785f. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USA2P1862386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b05e147badac050b23723c59f7b170c69a0736a951ae73804532171c7833fc. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USA2P1892642.
Into The Fire (Andrés Remix Single Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d1bea207dd4c15613997935f36c029df04fc372a8b70fbe28d4d16dc02a071. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMXZD1100463.
Looking In (Clive From Accounts Remix) - Single Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e7ff6f05969e5803af0fe22fa93ec24859b22e575f694bacbc7443c9bcc1a9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMXZD1100554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8202cd76546e02b6adea5299e8a20a5b6bffa09be3e8644a783d7ef2269da9cb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMXZD1100556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1290350622beb7b6c8c185323482843bc04bd4ebae1c16257b0894b879781a5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:19Z), 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/QMXZD1100557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af2d06f4e4de0dad75619838fd8e09912f0bc235b6c9d7905fe00e185dfb245. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMXZD1100762.