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 0x2fbafd3e6d052f3610514b2a29011e033a8c7a37523bd49894d05bd3eee8e8fc. 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/74031abd-7656-4a3c-a0a7-f40b420cc19c.json and https://artists.proofprofile.net/proofs/artist/74031abd-7656-4a3c-a0a7-f40b420cc19c.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 0xab5ae2475da35c653b3eedd4a22918afb682d50d88ba50ebd8b64ffff8883c7c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SE2KM1300101.
She´s so Skinny (She Can Hide Behind a Fishing Line)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8896708e6386c395ee50e68d492de19a9334251b44096d6df650545789597eda. 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/SE2KM1300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b79631ad658f910e383e8f9b630cf4d0e9371b82aad6808a01f98638aece9eb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/SE2KM1300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989545bb02d76e7baf8a292ec08469a8323421119425d5b3786869a590324136. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/SE2KM1300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378eed17b5dd19816b47d7c2c9e7f5572c83951ab2404d34cd22da80ba2c4e16. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:31:24Z), 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/DEAW51734801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17262efdeb6c227b18d0ede6704576c610c4e91c5ded070425cdfddf194cee2. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/DEAW51734802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2dd8fd65ec61ad507e823deb58b0f81ebef172ff6e490b2e00b18b8fbf53b4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEAW51734803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28137253abd3c13592c3989e40f9ab64a6849f346c74f2483b9b585e2b382ef5. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:28:30Z), 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/DEAW51734806.
You Need a Little Dirt (To Make the Grass Green)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e7e5c4fbe027c10b7fd0f961c990630f78d5906bffe2a1b08cd10cbc3e1d09. 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/DEAW51734812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42b8aaabef0dd3ebd58642539a002f5b518f07277f92b8d678c3551f1dde253. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEAW51939703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3846a478cb4edcc92718fcfdb6e4f002ec2305212a93fc88068e219080bc2330. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:58:42Z), 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/DEAW51939705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c228ced364bf2b39cba18f5ba428a38b815c44efb734c21defcd0d04a1c84f. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:41:46Z), 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/DEAW51939709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e395d3442306fe33b20e1dca46d71f6cd01542b8b0c11bb33092d020c48d2d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEAW51939712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecf32b79ade8f141f5de908b8268d6a6d0f39919fa769df80c1b71c256d9078. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEAW52061001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba030a3f969cbd5fe4de40a6d1c834ecf845b400caf16e742479acd222ecaba. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEAW52101001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b5f79cd435577ab4672d4197ab103eee47eaa2eac524853744095c93412c69. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:08:26Z), 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/DEAW52101002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514cf98c58decdbfe01a7bc79f593ec1ddf0e3e5ea5b1bac8b5915ee387b7031. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:26:31Z), 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/DEAW52101003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c00e0b94b911baa95f32ebf7635e2b8fd903b26f5dbd302d7281625f5e504ea. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/DEAW52101005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf62ba9c1d2815b028187a17645d7aeda9b74f1cc06825edc1c7873f271b3246. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEAW52101007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ea352e581032cd501ce9c1cad14b8a0f395e0d1ffba9609bf113fa9217707b. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEAW52101009.