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 0x93d7ab3c893686527c892d03bb1d3c236ce59317ebd29c9bba4552fb33c75f77. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0571400-f233-41f6-a430-17d35604d5cd.json and https://artists.proofprofile.net/proofs/artist/e0571400-f233-41f6-a430-17d35604d5cd.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 0xc762f418c62636a45499578444fb37d2d7a3b718f4382f9fb8510ae8465decc9. 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/DECE72303594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b34d1893bb331996268d5804101cc4b13a4f2a210ee82365cd66b632dda781b. 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/DECE72402034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674f6a6d3a7b781f309b222a8364cd9f5ced428192f6b312f8351e6d300780b6. 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/DECE72402035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e054f51fa3ffef845fca601d82df8a8658d1e2cfcefe0c56d4586a12948989. 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/DECE72402036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2670fa37c7890f123e7b9b364b8fa7f129ad3d36ffc58fde0b96fac5106e61f. 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/DECE72402037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f25359d8789bec809dfb1c3fed89c03ab042e8e4fb08d81b6af59a1775cb4be. 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/DECE72303397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0d0e8b36a933179d06eb167696f034056f672f7dcd83768e673d316dc5e57b. 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/DECE72402018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134fd3aef7603c9528c70d6d87a7c6998570a9d0c801dc747567fe918591b353. 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/DECE72402038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa6f8a7b63823af3a81486f95cca3035e503221422ecab3a1f4d89c676f6fcb. 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/DECE72402039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c28f5e37743bd08d3dd9f5848e9438eb52023cc13f67728d0b1f6850c11f90b. 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/DECE72401780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a2ad07b54afdff104fa2e0f3de37c73564e0653511c6a803cfb4502cff51d7. 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/DECE72402040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b6c215951af672b5dd65476261b3ed90a4a56ffed8337dbe5de4ca558d19ed. 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/DECE72400687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b43cbc345cab04db3710f0895122052c8a88784da92f5998ed512960c67a787. 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/DECE72303925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24599237307e1da6c142a143c29feffd968e4c1b525449eb4abc0f4a3aefb135. 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/DECE72401315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46306069ef92748ff304c7d23eb21c1401448eb9b5ac9a49e29d499e0d94c605. 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/DECE72402041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4383c0463ca48bef41803f966d2cf297b1089faa32025890b1b92d2df4942e. 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/DECE72401514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73534dea23e9382d2d4ac2966a9648c65222c04ef74f24eb6f562d9defcafc52. 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/DECE72402042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58c96b6c2142655e0981a0f85c33ad7f251e848d3ba4f09b2b0a5cdbecd7bb9. 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/DECE72402044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd85c860c5cfd7b506fc7afcb614efa91e992daf0d9206d0e4e88b4363e82f2a. 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/DECE72402043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ae86cb17c0add4aab966ef5b1581573a34c83f55900de504207655e3b7d3f9. 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/DECE72303308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b43cbc345cab04db3710f0895122052c8a88784da92f5998ed512960c67a787. 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/DECE72303925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b6c215951af672b5dd65476261b3ed90a4a56ffed8337dbe5de4ca558d19ed. 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/DECE72400687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f25359d8789bec809dfb1c3fed89c03ab042e8e4fb08d81b6af59a1775cb4be. 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/DECE72303397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84646bbf4e3b4692148c52038820139f580b9fbedf28784028b694486d792cc2. 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/DE1BG2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ae86cb17c0add4aab966ef5b1581573a34c83f55900de504207655e3b7d3f9. 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/DECE72303308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f571b1ad5053aae3fb2aefa8c1a7274cbbd10879b0fd734ca697d093323849. 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/CH7812349783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc762f418c62636a45499578444fb37d2d7a3b718f4382f9fb8510ae8465decc9. 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/DECE72303594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba26361fa471d77a6f405ddfc0c5050b94a76ea490717c46772f36007b949183. 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/DETM41610464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b43cbc345cab04db3710f0895122052c8a88784da92f5998ed512960c67a787. 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/DECE72303925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4a0819c4775c275b353f5044ee938a26a11a618d016cf912bf320846f635d6. 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/NLG662100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b6c215951af672b5dd65476261b3ed90a4a56ffed8337dbe5de4ca558d19ed. 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/DECE72400687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc762f418c62636a45499578444fb37d2d7a3b718f4382f9fb8510ae8465decc9. 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/DECE72303594.