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 0x4087671eec4265a15c2ae3a3f0050cc3334bf6b0d9e8a4fac22ed332c7ada425. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3a33a86-5b47-4658-80ab-9e1a55332e77.json and https://artists.proofprofile.net/proofs/artist/e3a33a86-5b47-4658-80ab-9e1a55332e77.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 0xc3969ff91470987a91656cdbb77b27c169e725879be9c5164c57ee2a3351130a. 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/QMGVJ2200147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f1834c476c6bc37dd8fee936c2ff3d891b3f42812527bc05b04b0edb0d7593. 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/QMGVJ2200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6862a532bf82f1e5e4ac2e1f8f680a74beb24efcd4a49a00e2a926dc5d3b5e. 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/QMGVJ2200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f336c412de3a3e9b914e4d0ad7bd637e18660d222f0b5233053e1d0bc3f7e0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QMGVJ2200166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d91827b67e29304f2c4bdac0d0670e55ad746291a67494cd0809d82dece0f6d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMGVJ2000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b20f9c53d73a5de3909cfd09fdc6c2e8e6c2bf3618eb1eda63be3d14a2dc54. 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/QMGVJ2000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2453f4a27ecae5bce3ed94ef45754e12bc6f4018cf486677a61204328f83ee. 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/QMGVJ2000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff5c43a2f110499f83ac188b0dfb8a09ab4380f43e65314ebd76f7931fbfb13. 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/QMGVJ2000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde193adc8e409fa4983e4061f49a8981bef3b882c1f384a494cad2774429cdd4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMGVJ2000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a80ab34b331b5e3fa30697282b52f8f838fdfa06f55e4dbd258bc5c0a19a392. 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/QMGVJ2000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3aa6fec125a2f4a312f55d9d888e09a933921708c8fa72869574031b8ba6f0. 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/QMGVJ2000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd35c96c2ca791ed2a088caede63ba532641119af351f37d14e02142e2fb2bba. 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/QMGVJ2000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcd15fb1042a6c4145654a529e8bf1a5a24d170a1e7ebcd7bfb66ec979eaf86. 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/QMGVJ2000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9065a9b3372c195d11c8850c4b4ddbf9e20facdd7b1a81cefa5372972e1c644c. 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/TCABS1334654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031d35858f6ce1dc9a5e30ad53f8afb24501614e453f3583b981cbbcf57b0d19. 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/TCABS1334671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b33a8d9f6b7b29332d76fc73796fc292269c9f01c73bedf443aeb6c329f222b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCABS1334672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a17c45f078b3136d039e8af29657a91722922ee98a838d3dd54edf1aa0fc0b. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/TCABS1334674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4421cb7832406632f90901220ae36dac9be65d0a189e41bec37ab89be763a5e. 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/TCABS1334676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a6c20033d63780fb040696a5ce8046a78261f22c17772abf56d5a529ad6abb. 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/TCABS1334677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4efdc557f486084113862059532156d6e2908c5c76317b29f61af2a526db1a. 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/TCABS1300799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734a3b766ba5a31efcec4a800913b385a9dde5c7b96e29fecab0c5a303d7fd67. 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/QMGVJ2300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6862a532bf82f1e5e4ac2e1f8f680a74beb24efcd4a49a00e2a926dc5d3b5e. 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/QMGVJ2200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f1834c476c6bc37dd8fee936c2ff3d891b3f42812527bc05b04b0edb0d7593. 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/QMGVJ2200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3969ff91470987a91656cdbb77b27c169e725879be9c5164c57ee2a3351130a. 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/QMGVJ2200147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3969ff91470987a91656cdbb77b27c169e725879be9c5164c57ee2a3351130a. 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/QMGVJ2200147.