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 0xde1c8b460e6dbac57b3fee3cf2061c0e618c24f7d7c3a50b41e99bc2127269cf. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94336310-6f97-4346-85f8-e377f61bd5f9.json and https://artists.proofprofile.net/proofs/artist/94336310-6f97-4346-85f8-e377f61bd5f9.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 0x259cb468c8ee291d6613e5bf54af0c481b28909d28846055c14b15889795c637. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/GBMA22518238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8085dc370194c62b00376ef7494c4b6f55d8761c010ca171e5562dbb958d26e5. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBMA22518240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6f517fd49da92dbfa27efd2db85f91e0ae3eeed93f959a446bec850ff26442. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBMA22518241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bd1a384aee3c48a048c0988e4bb59cd70a71eac06aab48614b496e308f8770. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:34:50Z), 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/GBMA22518242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30b3c4f4a5565506d693bf01514644cdb0e3ba8a8b18a20726443b85bb0f9b0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBMA22518243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecb03d3fb025ec9c2c93cd7e25f7b0ffe32d2e52f84086f832bb846208c6518. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBMA22518244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02098873ab76eba001f16f9b3631f22ced3931ff39af0af198d9f3f6a285cbda. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:21:10Z), 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/GBMA22518245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857b8e2ae2f286cd73ac50cd100762469eb362220d897df1fc845f4592d81ede. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBMA22518246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34c763469b16bcf547739bd96c72155aa3c97fbc9f1363a6a147c34e7650999. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBMA22518247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2624724b3789e548bbea31ce894ed93a7db64bab9617a32c56962b757ef40eff. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBMA22518248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae4cd5c5638ea8669ba2f68620d2601f2d9cb63e2ca0a7eeb1444f14a8d5d49. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:04Z), 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/GBMA22518249.