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 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 0x996ed44efec6084bd09a9f83b1a26c24eb3316ba224117def4c4c43aedc9c771. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4f5072f-dada-45d1-91db-20f808001617.json and https://artists.proofprofile.net/proofs/artist/e4f5072f-dada-45d1-91db-20f808001617.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 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 0xcfbdf9b70c9516f26462b42a148b53b68bf15f077db8b8f101e55bb810d51976. 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/USSM10003185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0ff35c3a9568ecf33ccb38feae527f8267d046e71243919b1eca854e079abc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USSM10003183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036fee2e42e136398fcddf5b59d88297dc1eabd19670fbbbe40abf2b56b99a4f. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/USSM10003188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60f308c9f7a76ea2253f8c9fbb16bdde1c5e19b8496dec8b0b223d2606231aa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USSM10003192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3d95b515c767ecc6b66d9e15e0f253782de04da90759b980311d845436a827. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USSM10003184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ea9d41654bbed6dd1b83be14c649ba59c68699880fbde1a4cfb2c135510952. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/USSM10003189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a8d020e63b259e9591be55796be2266e44c56d7ef32104458416690684c877. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USSM10003186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1f5d73fbf2b0b2e670daa6b72a0700f44c36782ec4d6218282af8c0ecffce1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USSM10102015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f0703e80ead0a09484f06a2e2f00c189b5d8be3a262a13870c76ac58d1cc6a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USSM10102017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108a7176a225bcc9c145aada445eda21824420472fe26b65e0769fbd34917851. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/USSM10102018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef0be8d14c02a39e15f9f0c8b4cc5aaf67cc97311da3d1b9eaa5152c9f3f8d0. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USSM10102020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ee83f6651c280d1272d228a821d734a584fe01114baca04ea709c9f6b344e3. 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/USSM10102022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf842e2aacac745c76ec66b763ae7b2253cac97b60495637207523bca57f4f068. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USSM10102023.
The George Benson Cookbook (Expanded Edition)
Jazz on a Sunday Afternoon, Live at Casa Caribe, 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388a4e2c4767d1452e8e18c4083f807999a61eaf23e8456cf9317b037b44243b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/US78T0748764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dd31729e6e3544175b74d922237e0d4509068dcef4145e4506ef3a85784dc6. 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/USSM10003191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60f308c9f7a76ea2253f8c9fbb16bdde1c5e19b8496dec8b0b223d2606231aa. 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/USSM10003192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ee83f6651c280d1272d228a821d734a584fe01114baca04ea709c9f6b344e3. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USSM10102022.