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 0x937c3bc020a7f277af9314d5ac07e0996ef81d6ca2959a61a658649f565701bd. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8808944c-7ab8-4704-9449-62a009b466de.json and https://artists.proofprofile.net/proofs/artist/8808944c-7ab8-4704-9449-62a009b466de.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 0x986435cc525ec89a715e95a52565bda044e6d2bc9366c80e7c6ba9664d75306f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:00:51Z), 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/NLAL61903001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6492ed2e67381898df6c31f55f37313510c61f3755522e64b5184bad7319414. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NLAL61903002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607efa02f46bfd0cca45ec7c7f9f41a648e91140901eda2f90b1e36b81ccfe79. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLAL62417005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e755bddfee7a8e3ced830799bda22f221008aead0e7b8769db68b15569214b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NLAL62417006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e755bddfee7a8e3ced830799bda22f221008aead0e7b8769db68b15569214b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:22:27Z), 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/NLAL62417006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607efa02f46bfd0cca45ec7c7f9f41a648e91140901eda2f90b1e36b81ccfe79. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NLAL62417005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b56a1147629801d0de3bb2bea3d209caf01c61df9d2185c265eb2c42a48e0d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLAL62417004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbda58f0f27e90941e4c93098aad96820625cf4a1d1be35720780e578ccf0509. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLAL62417003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579fc727541faacac39e0221bb80a57a87e2bb3dec4da54f3a93c160ddbe397a. 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/NLAL62417002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226815f1be33a4f439fe476788feebb7f9ef72195b1343ee86f18010022eec9e. 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/NLAL62417001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579fc727541faacac39e0221bb80a57a87e2bb3dec4da54f3a93c160ddbe397a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLAL62417002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9050f20b385e61a16e12166939b9ad8fc519ffed59f9d78187d6f2b21c8980. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/NLAL62417007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607efa02f46bfd0cca45ec7c7f9f41a648e91140901eda2f90b1e36b81ccfe79. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/NLAL62417005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5548205cfc92b30a60debbaee20aaa93f8b5652320fc24ab6067926038c09ca2. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/NLAL62417014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e755bddfee7a8e3ced830799bda22f221008aead0e7b8769db68b15569214b. 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/NLAL62417006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226815f1be33a4f439fe476788feebb7f9ef72195b1343ee86f18010022eec9e. 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/NLAL62417001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbda58f0f27e90941e4c93098aad96820625cf4a1d1be35720780e578ccf0509. 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/NLAL62417003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0882935e54108229a55fb751608640ca4d9e7ff2fb35f25e256df6be6ac8b939. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/NLAL62417016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a9139ffc77692aa365779a8714ca7dacb0cfa028f3896253c43f89d98de969. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/NLAL62417017.