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 0xd2e815e9b7da60ab69e6954f1067ef938e1e7e994eaaa06d96a1d9408ff6ad67. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9054651c-c3fa-4bc5-a3dc-7a423554da5d.json and https://artists.proofprofile.net/proofs/artist/9054651c-c3fa-4bc5-a3dc-7a423554da5d.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 0x6956ba5e3585920de95e58511ba89cd62db165121bb57e332f2f5ca8882ad696. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJP2519868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4995034eedfcffef81917527a7f8893e02a3b21f2fb2f19a55c96710af6e99a4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJP2519870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8bb21a2a62c3e6b5866660375003ea9ce432d08dfa777a512140775a40cee9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJP2519872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0184f7539dfb8e5b2c4a8e3d7f926c5277d848a55d7593bccd826399d20461b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJP2519877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355bae4bbf242fa7e81d0ce8176ae39ae570a127bf49da053c5063c40beafe1d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJP2519879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee945014be7685a7e88185d6af3febec90ba53c27b6f19551b29e25298ac509. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJP2519882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd7b3a7d5ca97d89adb62b2249aae087c72bdc984b97e16d15946b19b0d3350. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCAJP2519886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc5a3fec8b86316142a08642a2ec4cfc1f971c251a0c6cb79f158518a098bc4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJP2519890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002cc5143e68d30c8e55f503e8b1c0227dd48fb26d8529abe2bd6b4d084c9e34. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJP2519892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218e593997563c635016e13b2b8f210954f575d8171ea5f71bcf5a1ec4300d9c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:35:45Z), 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/TCAJP2519893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccdb6698692475ffa5b0639d2c44aca85d5e049531ff3f3fa4ee838dd0fddc8. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJP2519947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cdcce153c3415664ef6e06990129766a5068660fdc30dc666d3e7d34006b0d. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/TCAJP2519951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67968a8db3e1441ca48ca2389652b9c79df821b72de02a2b445c571717c5f39. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/TCAJP2520103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75728b05cced3b12e1b6c7af9ce5c48cd2073c6c36647d8a367213cca5cc68e6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:33Z), 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/TCAJP2520108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbe6588ace5e506c96b9b08aadfdf9faf3f48bdde26244f967dfbb8f6170bf3. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAJQ2520111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455995dc139c8ea98ad5f401d27e2dfa7e93c3dfcbdf22d629a60148f79bd611. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAJP2520115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf47427dba7b6b9337a8c8029b0699d033a7d77d238fbce2e51084bd77d97e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJP2520116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baf226c08552fb54cd81ae4b0b34002ab9df844de26bcccc25bf637d048113e. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCAJP2520121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9f92c9c8f999457a5db33a0828a84fd0f44b4840310296c9a1bf50f53aea4e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:12Z), 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/TCAJP2520123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f40c0ede26c28b2a9ec512a776dcbf3d30af9f640993e5196280bb8745cd74. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:04Z), 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/TCAJP2520128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7e13f78ff91f9ca0bf1af59f08f8cb16261e053bf4b0ddafe7840f401c9f96. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJP2520137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b36204e78ea49fca333e7cd25b9a7f1f05f7838ddf12d22368da59abb3949f7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJQ2520140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804ab8cc327cc1e5cedd93075e178bb39bdf3b2e4a79549c64a01a9731849552. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJP2520145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3953e02b40ab6260800b7d65f2d3b37bbdf8db1588f3d75e25255a6d0e1edd5f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:58:39Z), 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/TCAJQ2520147.