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 0x4da94aa48f2933c16a210fcaf72ba53cbe9457b03b6b223e2457a52de0d9a323. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db90a504-3a00-4c9a-9243-01ec557c2b1f.json and https://artists.proofprofile.net/proofs/artist/db90a504-3a00-4c9a-9243-01ec557c2b1f.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 0xd86f49211815d7fb1157ca78bc564088812b16fd03265f8ee0ff243a926b1517. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAGZ2326487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e16e0669dcc5693cef94683726afe69210116fec21551c2d68fb803b44c6d2. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAGZ2326519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bf047e1faeb4abd3cf370bc8b963d73308e648b183edb3b819ef2e9cbdf528. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAGZ2326523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b17982d9fad15f93e81330280e4f438a08a97fd4e26d81c291fd6f98fae5519. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/TCAGZ2326527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb520a6af30ab9d228c85f9c5690683edf6c73c49507b4e074164996a5ef7d8b8. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCAGZ2326530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f48780f8e0c217722f6747dcb210bf8ab5b08ab473ebdaf9ad8f46b7ceb909. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGZ2326532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd676f6623de8c550a004f308637bca28f30e53da086e04cb7aa6fc0f87e1448. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAGZ2326535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2308e5282a2cff5ad1aac35b39377948a5ecd6555b9aaf74dd1f134c40ca12bf. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGZ2326536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb777dd2041b233e5206db1c28fd696becc41ef9b9f728dfbebe12f3e31875b. 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/TCAGZ2326539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a592e72ca7fa803bddb857d815fd016d6e4c7df3d321ba00880ab6ad35d4bd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:01:18Z), 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/TCAGZ2326543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc9fbbc434a432f9e147febefc70f702233681e70a5ed75871bbcce68699883. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/TCAHK2389412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa1ea289aeae3327a2fcff7602f508f93055d239e3f0378ff6ffa7a7a1cb295. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:37:38Z), 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/TCAHK2389415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab6545bcd2704079ec2bab314780fc149578cd480fb693412caf71ffa2a76b3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAHK2389418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7191eb220f73896c4178ca088e6430ef60691451e2aff89df2a8b3b0dea5d015. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAHK2389420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69dbdebed667cc4a3ce0a6103d733a581f4c0c97557e31fb14f73e834b40272. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAHK2389422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f1294d647aa10bcba611db6c4b7b94cd4fa615a4af46a84af4a562c62fa553. 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/TCAHK2389423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56ec93dd79c56262c1fb3560ac6721c94ef987af7a2a32a4c50f364635a7388. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHK2389426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58f31737a260d7ea1e9ce9f7d2f97aef9b65e86a20bfecf6c895534c00c2e5d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCAHK2389433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d654b608bb922aaafaa995ec25428224ff572da180103b7a93cf11c74bceb0e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAHK2389435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaec411b6bbee0bb30f902c3ab7ff498e8ba8cb628a1f656031bba9222757a8c. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAHK2389438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f50e2d617183516636b624147e93548fb7aae02ae260d6cc7e39e8a9d40960. 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/TCAHK2389442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a83ccaf83e2848dc69b5c9b8eedac6667fada9bc2f23dec29781371bdb7faf. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:27:20Z), 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/TCAJJ2577137.