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 0x206ac62d7f869560ccb0d2d32a9953d120770779c2407da13dbaa5a782d4cb97. 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/245de379-c589-491b-8d89-84d8aeef4bbf.json and https://artists.proofprofile.net/proofs/artist/245de379-c589-491b-8d89-84d8aeef4bbf.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 0x40ea0e392b2e4bf332fbb5d7d5e15610f8fd9e62f1ab5f25bc63853e7bb16d50. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX871540265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20adae1719b1388c329eb17e1a16e87bc16fe393fc631a61fe6bf1d9b92bf6a6. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:46:03Z), 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/FRX871540266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81eeb639b816119dc9fcd505b7599db135b273689913e674df322ed9a33a1d59. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX871540267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bfe74db18b8826a98ed874723b27225d292bffb10a2f37c79920b090755a91. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX871540269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a5503be72357bcb745c18cc031b67dd0e5845c261b8f9265d1204a4e6a279e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX871540270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffec7cf0998d2aac55a6918f28cfa9ac9838e4c94d6c477ae00f9ff45227578. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USQY51737835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14fee27e3fffbb7023785da58a5e1a6e0dd13b83ccc5ada44ab26f41bb4b22d. 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/USQY51719883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13edd21f446fc208f3963b423b9046af07680ee981ed1cd2f29fb9ae3b145c0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FRX871547573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa590b3dcc49d4dd57bd5dc9c01c44f113cbcc579c581e1bdab32fe04804e6754. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:16:26Z), 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/FRX871547574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279452105149f1b8c6ce4b583d92c1c2c7bccfcc03380f59fa36e63011a98b25. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FRX871547575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3978b462516625b6e25e8c62cd255804f81ebe996fd1cbb17a3e708d1bdfe9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:56:45Z), 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/FR10S1643361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e39a867bc2d7615f8b1cb5adcfce2b0d72e11a7aec912864ab4e8f0f1e708a. 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/FR10S1643362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ac403751ee60fb9b8361381b76782f1acd7a7680eea4e16b96b7a7f2a72c3b. 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/FR10S1643363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f1f6c6abebe1c0a48d58f40739788c1c67de3f2c2ffc34927f52c93170efe0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR10S1643364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa930cf4fa7d245280d7a5f68b660b4d5d5283a11b1fce2b63861e8363ef80a53. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:36Z), 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/FR10S1643365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533458bb5bd4430376c05d292747b9ee5d7e641a10894c7cc70755557d9d1a1f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR10S1643366.