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 0x85e3949df1658657289ef05eee781f2c4c6a886c0c55e6329e77e220e5de93f6. 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/be56bbc6-cd34-48fa-bb8a-fb120ff1abbb.json and https://artists.proofprofile.net/proofs/artist/be56bbc6-cd34-48fa-bb8a-fb120ff1abbb.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 0xbc0a261c7f49805c92844ce18fc3993fe8b5223eeec10cf1bee41bbb8a1a62b6. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/RUA1H2124682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5d3227b5fc91491a9d0bfc5fa1628b56c37bdb641a42e94868f2745999ce95. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZGWX2226051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6a606a18e31ec5d5ead58f9008e170dc8379dde2f99440702ab15ea9504bed. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:58:11Z), 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/QZGWX2226054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2878ce09a5016d1b81bcb759f56f1ce43131430d7fb29be2d5a608b7816c6178. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:49:29Z), 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/QZGWX2226055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac334ebe717e4f5fe14a57e87f4567af7047cba2c4f821a905bbcdf844849670. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QZKDK2266674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15d5dd3cdcbbf600515b8f3c79282d72b5762492984c70d3801825af5bc1c4e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM42K2222830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb70dbcc81210f73536aaf6702a9db73709c87e82bf4c015bee3844b7272f27. 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/RUA1D2226125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa038c7008d149bb03bea5eb18866a3c1f8cf1edc7265c75e7050ea0300331577. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUA1D2267884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf409bddaff774dfb6aa6d40250794a1f36b71e7bf85446403d60856da4da25dc. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:20:48Z), 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/RUA1D2284291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ac591672cf16f07e19973d391faf2c1812e67424cbf2a2afe77d5eefcda3eb. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:25:34Z), 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/QMFMF2326181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1236059a19b2afc67d87f85cc50f3b66d294ed3ec7e10bf9586babae682e17ae. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM4TW2544480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8ec21119af75c69b19686f3b1814ad74819d398f06337b60ae0f1a80299723. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QM4TW2544483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99019554ddc3e67a5b03c2d20e6cd5a5e66683e2d7cb502adaed69f088c3f02c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM4TW2544484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9308fb574c893ab46e11b05f8a8f77eb9911e01cd6ebe7d9b7e2093747a45b2c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM7282572827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa751e480783a7794c986c5a8f26c217f5c4fec17c6637036abfe339f2e2bec. 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/QMFME2595905.