Bob Franceschini (born 1961) is an American jazz saxophonist and instrumentalist, songwriter, and arranger. He has appeared on more than eighty albums including those of Mike Stern, Paul Simon, and Wi
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 0xb76b91ad7dafa5b3b4efdd2ff12f7a3f665d8b332c7f9c50a2138b761f075aac. 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/c53a850f-c501-4b04-b0bd-8fb46d48d573.json and https://artists.proofprofile.net/proofs/artist/c53a850f-c501-4b04-b0bd-8fb46d48d573.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Whole Lotta Love: The Music of Led Zeppelin
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 0xa7d568ecc5ccefb6af4834e70d00e0326432865b7d3949d1954711ca0e8a8905. 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/US99C2146703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c69acff7dedb18e86767269189c00125d97b3f78e0dfb459c18b3493cb59848. 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/USAPX1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7152c0aa7c168efb5c1b741cd7ed0d2157a2c601c02c6a1a119c384d06d2f36b. 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/USAPX1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9d847ec9775f653839d634fdccfa498f853c5c5d22fdeee4b3633caf173ae1. 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/USAPX1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a37075b7109e4c7cfca3820a8a4d26182f3db05862fe966c60ee2f56bb8c969. 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/USAPX1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ec79b8650e5dea24b9931acca0ab657f28dca45bc5f2b2fa1265400d08b459. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAPX1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9446c522152a844ef489fe93b9e37d774c0beaab077bedcb3d13e264c1b97f5. 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/USAPX1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c07fe02e207d6c502d09caa7de85223eea62ff835629f9685b77329b64df001. 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/USAPX1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e1c4b7d7ac11168ace68591b2e208641b182c442fcc998f24201cfa26a9083. 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/USAPX1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28723060459acccdac4f92f2e101322ec2ccc3342622ebd624b8b9c1e456ea98. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USAPX1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac565f87dc31829e175f121fe591a310bc19840da2af91f6fa2cc150ea6ddd34. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USAPX1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98255a85848d07d97e765f52d1eb56b07066a5bc438499d125a85d4ac42b939c. 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/USAPX1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c8022a210507c4e2838be288c2d2ab66b15aa32bf41697b9b88711ee116910. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USAPX1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168ba4aa9259d8d89abe118f0cab3fd62b55f5f605fd8c1d6882068b75981484. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR6V80627614.
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