Joseph Francis Buck (born April 25, 1969) is an American sportscaster who serves as the lead play-by-play announcer for Monday Night Football on ESPN and ABC. Buck previously worked for Fox Sports fro
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 0x4c80637f2d8de55210130efa1f3eaa4ae8464c87e0386f0fd7a9c2e572319876. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/970329d7-6c67-4081-8ee6-45462c225b93.json and https://artists.proofprofile.net/proofs/artist/970329d7-6c67-4081-8ee6-45462c225b93.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 0xe5f54f54418a534d2bdd9b706c92099ece97274738d877fc9afd05907b2f57b0. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/NL1TK1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6438a41490246f3d9d7d323a4b31b8e6fb4492c1d6fa9757689d588bdfca1975. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NL1TK1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a4be800015d15176218c54a01917989334e996af929a8ebcb26ad0bc0e2143. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NL1TK1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df12fbf284be969bdea43eee7c81254475003a47b9e94b635bb092d35c6b760. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL1TK2100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa618b2fcd055472298a3caa043bdbfa6fbcf0cd789689e176b4d23f4ab96ec76. 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/NLSU32100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9470db844da67e7b49aa1a5bd7e0fd9b140ec441ace6d6d97158adb162a01c35. 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/NLSU32100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b416a5737a60aa04e36616374f332dd5de59be804e13f9c6e168d561bf65db. 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/NLSU32100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a7a3b99454907529cf7fedef7da2f64ba51bd7f130c2027b2a3675b09640f1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLSU32100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384896656f0b2ced6e1e9e145be6572c04f67e3559e453e033921f9914ebd593. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLSU32100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0d96b8949a8e22e55ccf33179684cbb89b12ce47c07987032a972b7ee6b20f. 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/NLSU32100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348412dac7bb9d51baaa87fd29c33be7c6af6b816aef8b417c3cc0d9ca54ecd0. 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/NLSU32100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a98f2c704724c3d209445fcd5032f7aab3ec91239eebd1ceb041d715e39831d. 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/NLSU32100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d7532f5602f399c178c27d84b7c263e64c588a16cd601ce82e696eb205f8f7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NL7JS2400001.
Beste Zangers Seizoen 2021 (Aflevering 4 - Alides Hidding)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a7a3b99454907529cf7fedef7da2f64ba51bd7f130c2027b2a3675b09640f1. 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/NLSU32100030.
Beste Zangers Seizoen 2021 (Aflevering 2 - Bökkers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9470db844da67e7b49aa1a5bd7e0fd9b140ec441ace6d6d97158adb162a01c35. 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/NLSU32100018.
Beste Zangers Seizoen 2021 (Aflevering 7 - Anneke Van Giersbergen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0d96b8949a8e22e55ccf33179684cbb89b12ce47c07987032a972b7ee6b20f. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/NLSU32100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9add5a6bb022a5b6f88bafa1f3c75491c57bccd1957c943e99ab40a4c8b593. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE3AA1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348412dac7bb9d51baaa87fd29c33be7c6af6b816aef8b417c3cc0d9ca54ecd0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLSU32100053.
Beste Zangers Seizoen 2021 (Aflevering 8 - Duetten)
Beste Zangers Seizoen 2021 (Aflevering 1 - VanVelzen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa618b2fcd055472298a3caa043bdbfa6fbcf0cd789689e176b4d23f4ab96ec76. 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/NLSU32100007.
Beste Zangers Seizoen 2021 (Aflevering 3 - Belle Perez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b416a5737a60aa04e36616374f332dd5de59be804e13f9c6e168d561bf65db. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLSU32100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa618b2fcd055472298a3caa043bdbfa6fbcf0cd789689e176b4d23f4ab96ec76. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLSU32100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b416a5737a60aa04e36616374f332dd5de59be804e13f9c6e168d561bf65db. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLSU32100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a7a3b99454907529cf7fedef7da2f64ba51bd7f130c2027b2a3675b09640f1. 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/NLSU32100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0d96b8949a8e22e55ccf33179684cbb89b12ce47c07987032a972b7ee6b20f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLSU32100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a98f2c704724c3d209445fcd5032f7aab3ec91239eebd1ceb041d715e39831d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLSU32100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a98f2c704724c3d209445fcd5032f7aab3ec91239eebd1ceb041d715e39831d. 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/NLSU32100050.