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 0x083e4aad2edbf992fc3a8a9f0143ef4a378c87542921fffd47e945186cf0de9f. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e9cb56d-8afb-4a4d-b7d5-c70171427c7c.json and https://artists.proofprofile.net/proofs/artist/8e9cb56d-8afb-4a4d-b7d5-c70171427c7c.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 0x7a023d81ba598b0a55edc893def689bf45ca81386a986c2e883992df845dc96b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JPZ422400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d43e184d997a56315345d7029a95920c5fc1fefddcfcb1a5d7d7a50711468a1. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:40:15Z), 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/JPZ422400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd123a8e09a06551b50a6835276e4449f751922d508e2af4c6f0dd5b820ec5707. 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/JPZ422400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb565daf3b408691c4d8c2e232d92915c496aa3a5d45d8b354a17685176352bbb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPZ422400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e21cc4bcd898d5d12e0e06de99a08a05a581557c5e8dce1187a41d2f47ea68. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPZ422400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca1836b831d54d45c75987008a8d84b7fa5d0751a6c98328b7aeef28f7ce2e5. 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/JPZ422400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c30dc5c4b547e918d453c13538fbc34577f8ab8e46f36136bae47c7da75889. 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/JPZ422400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca1836b831d54d45c75987008a8d84b7fa5d0751a6c98328b7aeef28f7ce2e5. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/JPZ422400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0809f691223a8990cb3a6444ebe91c414bc994191fc27eac7c49e9438ca6b2ec. 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/JPZ422400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e21cc4bcd898d5d12e0e06de99a08a05a581557c5e8dce1187a41d2f47ea68. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:33:40Z), 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/JPZ422400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c53cc94dd419e2cc9055058cd7ade18d96209204e8f4edebf9789b381cd1338. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/JPZ422400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80377d67a5e75a06e99d27efc5145d8194ba18a737e3d56c4b11288351d72017. 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/JPZ422400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a023d81ba598b0a55edc893def689bf45ca81386a986c2e883992df845dc96b. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/JPZ422400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510f40bce1c60c9122ea0017a272ae0127cbb50969c1ed60ca2c07d0e146c920. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPZ422400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd123a8e09a06551b50a6835276e4449f751922d508e2af4c6f0dd5b820ec5707. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPZ422400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632ae92493784150d63a49366db3193d93c16455581f286b5584bfb6d2a10866. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:53Z), 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/JPZ422400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb99537318c1e1f4ed8c12d1cc0c3f58e2eb87fbdffdb5d2f2aa82ebd193919. 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/JPZ422400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fc09a12a2022455440378678d39a0d2bed7278c5080de1f00840f6a614b1d4. 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/JPZ422400052.