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 0x24543b88c6ac60015410e1898b95572c60d672c46bfa116ccf9d404f02dd1e0f. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc5a1396-52f8-4b76-84d4-5c241f289d84.json and https://artists.proofprofile.net/proofs/artist/fc5a1396-52f8-4b76-84d4-5c241f289d84.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 0xc90b793450eddffebdf282563f696e441fc9d81f0b118610970b869035668e28. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:49Z), 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/QZHN32105616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8495ff6c732e68ae859d84d261767a0b2939fa3d63445ce0aa5f543ce9d9400c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:11:33Z), 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/QZK6P2151284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617bd461b2f409112a9aa4fbe1a6b18bed77e168648fde87d249902a796e9c44. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:09:58Z), 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/QZK6P2151288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d7b67bf52e9d15d05fd506ec121113317a7224f3b1396ab9635f6b956be877. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTB62397492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32817823f0d0d0d6fc46f1b24b44972599efdf13d2dcdf0c38d5d00ee166320. 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/QZZ7Q2410849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8be4260c913cd772c0ea6f939a8e9fe696f51e12d2987342e7bce9d5830320. 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/QZZ7Q2410850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6840b0e913b90412d99d7c93072188655cdf387eea550c5b38e68a97a5e698a7. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:31:49Z), 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/QZZ7Q2437230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d00703d9f616c171272b0bae4446a812560697da3faaf1e339681049861c7a. 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/QZZ7Q2437231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb56e8f0e7d182aede3a635a0de676612d141902ea59b1ab86c6f54fb3c3aaeb. 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/QZZ7Q2410851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e165b7a00e9ea1b511f298309a1538229e4bb5a8e01d2dc4efbd7eb22e2275. 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/QZZ7Q2437232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd854cec93aa028eb4eae57c2b0ea6307158c528acde976383182f22743cd3b51. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:27:16Z), 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/QZZ7Q2410852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2682284c58e7a0f662ff5cb60cb188dd893cd82e5c47270cae3eb0a6f4c8433b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ7Q2437233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccafb21ae1b772107ce0c2afafc7c7f5e505fddaf0fbb306e6bde09f48d0ea7e. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:41:52Z), 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/QZZ7Q2410853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b05b44497abffeae22e4bffb7c201834ddc7d84771ac917c997dc3f0ec43e42. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ7Q2437234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d4a83e3a5ac01387bd13ba1947b09953d5cf7da47309c8b364a0dc1bed575d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ7Q2410854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab27375b78d9844b61f3968d4a3c442388396d38fa03bdbc9b02186573b7492. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZZ7Q2437235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430820c4555bb654390e4289f71f99b9badbdc1558a2973e56870faf1ded9b86. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ7Q2437238.
There's Something Of The Night About You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6334dc07b582a446076d27825e9423a9983aa3508457c3fbd25cf26d205057. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:09:38Z), 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/QZZ7Q2437239.