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 0x4c49f60911cb3d4ba7f48a4863a1ab79a6d63a43c211d7670d57f14d02fb29ce. 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/ece7cfab-bdaf-4130-ad74-26f95e500695.json and https://artists.proofprofile.net/proofs/artist/ece7cfab-bdaf-4130-ad74-26f95e500695.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 0xdd9cb97054bd4d265e0a7c0b37108d0acab15238e62db5d457e110096b335208. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXJK02200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8ad7ddb33f7c1c350fe3e9800bb520fbd11e575b19a1b34392200a5e741225. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMZ92059433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf806927f046ee2628b5861d8ea311691b51dcc67ee2bb123eb156ad7bfe5b5. 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/BXSSW2300839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2ab30cb9d21b18f16af608098637c64c472b863c4708940415f0b32aa248df. 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/BXSSW2300840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6c689da7704e35be4209a07115bde76976efaa4d2cc7c47681f613f7e92573. 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/BXSSW2300843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d94387c1794ff5adfa1be812e3188413110ba408bd5401848a8d1b8f38e4b5e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXSSW2300844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54932894661c507d2bddabb85b34d77d287e33410e8950914fd286413832e923. 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/BXSSW2300847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86a7194b8d5c2310654a27ec4495257d0abe603ffd71e41c33c34f5610a7739. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX7ZA2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89af78b16306aab6696ea19af3143c7daf508e5ba17de7f2fc5924a9b2959d8. 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/BX7ZA2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cc405bee962b75aa0549fb6e5a828c88aa79158249b8b1ac15fc71d43897e1. 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/BX7ZA2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cc405bee962b75aa0549fb6e5a828c88aa79158249b8b1ac15fc71d43897e1. 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/BX7ZA2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89af78b16306aab6696ea19af3143c7daf508e5ba17de7f2fc5924a9b2959d8. 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/BX7ZA2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f76656cd81f3de9686868a174da17b18c7d0a12c981c7caaf29937abec1846. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXJK02200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0680e536789eb484ed0ce3aebd9a8d98affbb68404d3586a3e404d447b2eb8c8. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BX1TU2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91843bf1c2d7e4977fed08268b9c12f91707393fc794614762fa5b668d6c6c0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXJK02100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b25e8019d419e22a340f833914f8c4846e75803009ab92a01a6f738e0778c87. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXJK02100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5e7e9d94c7bc7f9821e5332930c11d8fa6d703625ee245404f8685c9fbcc48. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:01:26Z), 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/BXJK02100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7323cb422f06076e063de5a8a3bc2c3e22714c9587bd109b235681266d1333. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJX2011801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2701f6fdeda38d74d8ad332b9956e31f3191ee666de5b6e283dd11c482ed47c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJW2074242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cb5105cef7489b043fbe2475987a1101859fb17f15d0f8bca02b69e6956f9b. 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/BXS1X2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eaedb9ed0f6be01e2cef5d62c8757892449a5e59f6722dfba1b4f492dd8145a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXEOP1900145.