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 0x97c4cfc57b8477c73ad93213673565943e8045925872f3df597915e0f83ed7a3. 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/41cb5c2d-76e9-4994-86a3-df2cfbf7de62.json and https://artists.proofprofile.net/proofs/artist/41cb5c2d-76e9-4994-86a3-df2cfbf7de62.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 0x261cf6e9829b6c2ded9f5823b68de03c2128b09dd5803b1b9177aa5229258c07. 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/QM3DF2249892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88533a2eb2e76dd61cd28968b58db6fd93fd60e3e70c4564747a34daa9c5205e. 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/QZW9K2300250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea8f864e86836a81521a81eefcd50394b62697c0c5f7f9c2a9847b93880e617. 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/QZW9K2300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde92ab99c4af5ac5c6a5807c3bae8c2e56e4a1f0ac1a7455447e66fc4ad9f47a. 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/QZW9K2300252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbec6232cf80bfcab46e43e24a0345acc81be9b71e08b6c0015744abbe6f92b. 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/QZNJX2332094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6d0264c2647dac806ec75ec3af2a58336602d6a4634520cc96a7b9ad15f950. 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/QZW9K2300253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4399942d6dfda13b464b5f5f9b62716461892a3bcd0a085c91977a8da3431922. 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/QZW9K2300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937348ddfa528a0a311258c4d396a03207f600bc11fe94e51146008aaba04ce5. 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/QZW9K2300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc36a48895fcfd001f9be79bd4a68b9d696fb5e89322bbf0f069070b318f014. 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/QZW9K2300256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7c042d29883ec553e659de44fe7d3e26c99c513ab19d7d1043083e37903f44. 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/QZNJY2399441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa7b8bbc02aca09e0cf3c3138438a297376943763ac82f854b7bcc894d857ab. 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/QZW9K2300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7d479a3331684c5223286d8d0f971cad7e1eb2ac54b7e050c783ec49ee863c. 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/QZW9K2300258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3743761ede27370244e26a389cd3c120ae7e0638b847662240aafb2a009066ff. 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/QZNJZ2385506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdcc97b0313cb9d5d16f33b20854fcd5b1f41e9fbc1320425309a2973f007dc. 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/QZW9K2300259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a89a8573ecb0303ed4c46d82a515eab0aa55b0597216f904945ce9ffed51337. 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/QZW9K2300260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a28f793b71b0db59b746ea0094b913a9fbc78aaa66daef2b3ae3d9587ccc9d. 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/QZW9K2300261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7c042d29883ec553e659de44fe7d3e26c99c513ab19d7d1043083e37903f44. 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/QZNJY2399441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a1e69aaf11e5ba04621285a5b27f93f6f3e27f812d77ace1a1d3b49d549393. 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/QM3DF2407503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14e944123007454279b05bd9331de4622f079e8fb7e7cec02201c4ab7395d07. 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/QM3DF2407504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f2e06230a2af539194222ba890099be8a66c45d71d952fa7f18c830881b564. 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/QM3DF2407505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55ceec1e118b7348cc875cd586eeb58585e5cefaab8c0f8fcf90803f3deec82. 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/US3DF2052782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0a084e870294f8f28f6e9c57c71f46a90272e86337cc19ddc770c133472b34. 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/US3DF2052783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeaf62ff65140cd5ae6d1c4eab81e04023afad555d33fce58a9f2f1615454430. 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/US3DF2052784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd510b94f86ed20f578d8076c13c3f194d07b0596a58acd048180e58a74ea98c8. 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/US3DF2052785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c3275ef0a7f1344a91d417334205192ef5b2c4dfe64769a1dce918944fe0ba. 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/US3DF2052786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddf05d4e815e52d2a9179407ebf265cc1215e7d4f1abc88e84bf4d9d53677ff. 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/US3DF2052787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb696dc71d1656839372f4cbe922bd2d7e4bbc41ecd7f8ed14553e6202fd98eb. 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/US3DF2052788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0118087e46a8ac85b777785a65135a8536eca96c525c7f1ef499dc0fcc6a553. 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/US3DF2052789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1c52cbd8f1011f740f28a55467ed61c959ae6dc9c866a912f5327d56d9b8af. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US3DF2052790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dca779d5a1c6c667d3c4207fbbccf1cff2bff1fee9427cbc9dc329ea796c552. 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/US3DF2052791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef2ff1abd96406a8a5a54b9a025fc47507ad4863df329e6bbc2d22da1991781. 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/US3DF2052792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e8f9711089570e374f5f0a49c32a1452dcea393141e8dedd40b2b183ed400b. 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/US3DF2052793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7672bab7b3253eead64f67a08418db0568c03b5288d7e6487696a6a507c2e3. 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/USL4R1914381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987b3d6ed840031e722fac17fb924da023f4e70feab8e89eb852166ac8465343. 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/QZW9N2252340.