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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73a20e1fe61ccbf798f68c180b58d0e45a9be271a0b89806aa63388eb552848. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c92e2fb4-5906-4111-ae80-ed2edc48a5e1.json and https://artists.proofprofile.net/proofs/artist/c92e2fb4-5906-4111-ae80-ed2edc48a5e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mole Listening Pearls - The Collection Vol. 1 (1996 - 2000)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7ae6871f47b29df92b309913741bc02f9f0be3d5245c5883e4c14229f046a9. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEE820000254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cd4b3d31efa12bb6d82240a887a3d503b773103833ca6843a156155a3735bc. 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/DEE829818750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130babbb1211a45614eacb0582a4273378d94697bdd9b4e3c206b4dcedc790f0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEE820000523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365f652259675dc8e5309e8cd08a8510fb2da9ef9743943a4191aab297a1df45. 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/DEY600300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af5c6423b7599d491a00494815cd2e74c12a0720595ebf9687c62be31cb06d7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY600300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89d7959c47c2cebda1e17f87cd736c70063f281765b704140096c194d3fa9ab. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/DEY600300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11df568517bf9801499f0cee63d11ba9b540362ef0f268e4232aa2717f0c6087. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/DEY600300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58f63f6f80a48409b1e447a0e51e52124742db03ffaced0d4212202d894bf3a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEY600300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09067889fd0187a6545978bba101a8b931fd1b5fcab0c6896b2663eb74f6667e. 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/DEY600300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad3d77d41e2ad099c099050dbdd967ed46829c2dddba79d45467f135b52dc53. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEY600300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530dc4a325880ca363436143c1b267e68e4f5e8237230510f5eec3aede39f1f6. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DEY600300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb368f340b1c30414411ee934079312df9e9c7e58b6d7511063d254f43fe6cdf. 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/DEY600300103.