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 0xe18e7e02104c5afe3fd4b4064de4ea07635cd15652a3f163d7423f01b3fdc4b0. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9d04276-1696-4f57-9557-e79448bd9ec1.json and https://artists.proofprofile.net/proofs/artist/f9d04276-1696-4f57-9557-e79448bd9ec1.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 0xd8c3a2e336b81227b1b733b32443404219f1a07d42a35973c84e661f5bc2d7e0. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/CH6541739350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78a4f47f483933dcc8186df008e47f0c76c859a272a05270249a78b6f4d6009. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CH6541739351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c56ddc9d531275acdcdbd849e8076d809a1904145dbce6b6f252915169ebf6. 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/CH6541739355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7582e308ea703fe06cff14e26040d353898a40ba53c27bce8b0b13a7161b62. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CH6541739359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57d8752328496ba181352a4f6b69110aa847632b897d23715c93b9a244f54d9. 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/CH6541739342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ff29a2c6c782b716a139bab967fadc0d02913afac1d98b6858193d8f8a33b0. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:23:20Z), 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/CH6541739343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85722ffdca8a9a7b86fb289a9432ed3b722885a8ba6389b8f142ce0cb9bb231a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH6541739344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2259522671bf5ec0ae3c8f4b4f45fccb0cdb002f6a315e8df40ec50fe478dad2. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/CH6542508665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5283675450144a1abbf05d6aa863ebb39641861bcd94f471366dd8175339aba1. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/CH6542508664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3621c8e70fc66100cb8dac3e38fa6ea56a3da37b94cf9afbb8a8029acd4521b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:33:50Z), 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/CH6542508663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb98b39ac68386cf13e95e1e9b6c916e71ed8defbc03c31520188f219e1f7e4f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH6542508666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dee3801ce6a90e754390045d632c3f6509395cfa7bc338de38945bdc8d470d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CH6542508667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29e7c7aa82cce269906e10470e36b6bf7dc9f1b31203243870bafae617bbf2a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CH6542508668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59f3a7b4cfbb67c72a9575206341499af7ed8d87ce945ca81359d30cad0d762. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CH6542508669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19e5e1ca6dfc101b21c6a8f0a30cc6d65cc9daf674d494e9b0c437a11d9da3f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:18:06Z), 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/CH6542508670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9c3fc0dc1f290473fcea545c86aca525ec3ed5b21170e1b9b96967716e23e7. 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/CH6542508671.