Oc, OC or O.C. may refer to: Arts and entertainment The O.C., an American television show set in Orange County, California The O.C. (professional wrestling), a professional wrestling stable in WWE
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 0x7dac0bce0bdb185d257919179214d1b9655ef595098c38e30a6803a4ccf736cd. 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/d750eb19-2aab-4013-b1bd-20db82a3a155.json and https://artists.proofprofile.net/proofs/artist/d750eb19-2aab-4013-b1bd-20db82a3a155.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 0x20b13152df369f4355d118f533d65c84a49219dee93dacc45ec9dcf6a7a13404. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6P2455740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aea927550c75b5a01b6a010658d0fc0bff462870f865db13e9138bc723272f5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZJ842400347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7f9ef9adc5fe17ea1c02f9bb1975627242bf6715aab8359150e290cad1dbfb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTBF2301115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f68773c43ac313104c19c051147933def1ceb2c0019ab8154acc26d2fd8f690. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKZGC2305216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207fe9964c0e5ed59a840d2fa251415357d3569dd19bd537b1c036c0c51420fb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6K2394357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994ce2f16d4cc07daecdc2be17e7b347e417026c3dfc2cf9e8456302410ad617. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN62397539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015a041011b183b4ed16997375df49b5d62d485c819faacedb203d55ce2ea5b4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKZGC2300888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb06f4ac7d9ddbced5a64e90ebcde4ec6da85d05e02874b08b4ad0c5cfc2c386. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UKZGC2202958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d9030a7010fee55d3b350aee0fa43f8ef1754599c3dd0088027c7555042fea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNJX2278279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e4ee7d67eb6eefb8e279f5ae3ce1a5ba2c1db657875cc20b2048338cc4d7a0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6I32297947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534e24ee74bf037be227862ab84a849781b955fe4769a91d71925cff172f00ea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6HN2276020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf032fb1e9ad55a3d99343da407b5002ecf836a36952d6339bb33fcc41078d3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZDA72211278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351f32548984e9f23a48ebdc0b290ee60609f3b50ff4e1397dff5f0ca6dac720. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAT2150184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6103f6817e6252a12d439402fd56880058ab977e850de394243fc869e1d22e48. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6XW2145349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba549a794f5b44df92f1529b65375758d8d0aaa7ad6f1e51b0898aac632d460a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6L2190774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26104fca2aa87611e604f38e23c228a2dbc689ab2c7eef7da5f63cab2bac106. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P2107266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca4da101d56df4ce7c4807dcc4e2355bd2d836d384b120c15b6d4ff8f0c59e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2107269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433931c09c0ae86e6392ba5993b6874c3721b7a806207a4704644cc9d045dd72. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USA2P2107265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597bed25c02467751352f77e89b25f2f28efe6a6c3c532c65cbb11440bd5bf65. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USA2P2107268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d3296a7993aea06ca631b57b0281b8550c24aa90e96f56b66638fd8b166ab5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USA2P2107267.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa022313ba2e6c61422c2629c462ad68f95967fdf5e93af8217c660e2f76b95. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USA2P2107270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b078fc3ecfdfdb3e6b7883e5645a0f8b1896f0dc519956d83136d48581bdd2f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE5BU2117514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefee82aa98b65fc0ff99d06da2b735a3378f63a671fae3edd0d25927674ae78. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6K2043895.
It's not like you're losing something worth a single tear
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e0a887808ad094d8fb952358cd8159b11cd61476ad88f7400e53205d7700f4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHNC2031368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70942d7722f092063c393cd613c59484a060287d004ca04aa0fa9a6b67fd9356. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZHNC2031369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83eaf16c3e2f7015e2cac3d5e052220eddc3927ad3da6a7caefcf6f48054538e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHNB2045120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8acd7b9cd309b0c7a8e37df2cbce8ab1486998c553a642469ccd561572e3ab. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN82051690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbd2af7e8cb9aff31715d74d63c1f3a29aac17046be90576f5ac3c91834d9cf. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:27:32Z), 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/QZES82038694.