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 0x34213c3ef25eb701e5104067e43002dfcf4a1aaa87668bb2b23141f374755cd8. 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/29430997-b9c9-45d2-8fcc-3a42521034a8.json and https://artists.proofprofile.net/proofs/artist/29430997-b9c9-45d2-8fcc-3a42521034a8.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 0x697a7908308598f7448aee0ad78abdc398abbd10ce0232af737d496d5b8e0439. 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/USA2P2421036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6414e29724f4a2a8521c2cefa6598faa30135574b4b9bd26ef912f5ebdfa6b3b. 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/US3DF2441146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf974815730034a369411eff9990449b517ee354887c04d4a536a8898f9b781c4. 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/US3DF2431566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf263d601ece656d8c814fe99756e24a83e8176b3a15685f868f80b75be5fceb. 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/US3DF2423354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36a5d0508c36e7db3243dfc84d23ee6cb00e9358a99d963f8e386fe1466b053. 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/US3DF2409553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7fc8318ec5633aa6e9b7280afc8f3b1b9d9cf2c592c2dd5173d3ddcccb9ef0. 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/QZ9QQ2300839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3a2ce2039640fffb97a913940de35899d597282f50275850ed6523f236b061. 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/USA2P2476536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc09212f617449c99c9a79a201fba051e0e78b19e5a28155f7015e1a5909089. 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/USANG2498529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6203d169a05d77186d9d8e1db1ce289b0f3fae71d2a89282c0735f6495360bd. 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/USA2P2457465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e04a9909afb8f7cd940ff6c502b0d140d7986e4810215ca3e29c731114df9b. 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/QZNFJ2403785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45d18aeb5e23491ea6e0c379039f00bb69a8b16fd186d45d5791610b44d45c8. 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/QZ9QQ2500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454558bf3230ca591a9c1cc4a83e60516171fd4002ad5effbb0e6a08f0038a9d. 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/QZ9QQ2500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e49f3d498e54c00fc8b6f10c0564386fb62a3089fe21e4484082c58f5af7513. 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/US3DF2503074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4926607a4b2b19958b608019063c314f7fb884cccd0a31cbb1d1b5bec7ca1b03. 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/USA2P2500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a53ac466a1c52d8d146fd29224debbdc80fd8d30f553aac09d5af15c739009. 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/USA2P2503659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7020e16f68962c1b9322f92ff85ff402e952aa8333fe5854a7e7465a1f1746f4. 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/USANG2477881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0eb67168baf23fec53aff945aaef15a2ad453a4030910688f9b11fce07e966a. 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/MXA4C2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3110b77b671e9c7b3537a01158f851df935cc527cdac3b165ef94485812fab44. 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/MXA4C2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ef7f322b506ada505922189e616a2aad76c7240ef70bc48f044ee1e0c8d361. 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/USANG2431932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3a6ae72d5aa2f1a7ab57c22a0f4117ac892e2c45066bb0c3de3a21b3b18314. 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/USANG2417017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a01bd00a59f6407089ad9cf97536c9cdd1a4e02d9ccb0a5c464a7c5fa7fc4b. 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/USANG2410014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7d4ebdac4d4be234992bdfd295c05a365cce37b0111d5e81b40b66e05172de. 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/US3DF2482604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91470cf455bffc1364c53338ee87f0f3ad258af385d87a4e70cf8db5b41dc26d. 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/USA2P2436708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca021da438b300cf76d24ad4a8fefee6ae4415216437446fdd3fe86d4ca0c5d9. 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/QZVUD2400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678d3bfd626d78aa8aa68bebb9cb40f2648f20b1b5af3f4c1d3f13a043598c94. 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/QZ9QQ2400623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f35088ad3d71939fbe4eaa6baaeac7c403f1af51ae01d2519dbe9088d9c901. 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/MXA4C2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f0a333873a6022743c4db7c7f31de2ed2562bdaa3b393a8e36088e0bf9f99f. 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/MXA4C2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c84fd5be80720794ece0e2ea8b8a11baab9f110ce05a4b162c9e84d17ee2456. 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/MXA4C2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0c891436f25ea6334a7dfae968bf3ed4d0115e8e325d2f5dd8a4a23c0c0e93. 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/MXA4C2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cacbb5131f992a8fe55bfecff436b29c991542fce135cee387def2cc08af1e. 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/MXA4C2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3110b77b671e9c7b3537a01158f851df935cc527cdac3b165ef94485812fab44. 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/MXA4C2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164ecbf3d6b8ca1089227f9e9cc77065b7603c4da27be2cf7eb87751a0e74d05. 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/MXA4C2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378818c706f4820b3b134f039dad5050581331e61bd2bd80e119494009074500. 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/MXF012400500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4003f66903676a430035934be6f3334010728e6d79d568edaf3dcac5beaf09. 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/MXA4C2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc9263d85547d6ab53b9673cdd4c4a3104237314c16889fd77029a3bc56b166. 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/MXA4C2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c11662b45d9b8c496119cc92859325c847781fe4a9687f6d8302c6f124365e. 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/MXF012400705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1d2271fbfda4f3a7bdb34bdbf5f697ebea4436d0f24ca3a63e79e45715797c. 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/MXA4C2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685cdf0b711a8ec248dd0094c3aed4f0afa4ac84f43144d26a0c7341168805d2. 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/MXF012400820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01490c372eeaf3355c19a9e3d6c8b2ddb30e0b24e6d4cdfd6a0957935b8d5600. 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/MXF012400602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccc2cdfc02aee4c13a25e8f6f093df6e74d76dc075166ffe67b18932f4efc62. 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/MXF012400552.