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 0x7efc90522b2fad4ddabafd6da1236e631d86b25cbf1de34ce03845c8af740299. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ae8f3ee-e098-4fee-8a70-f8778d46c9ae.json and https://artists.proofprofile.net/proofs/artist/8ae8f3ee-e098-4fee-8a70-f8778d46c9ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Handel: Messiah, HWV 56, Pt. 1: Chorus. "And the Glory of the Lord"
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 0xf1064b5876c5a55ee0152f289bdfccf08202c51aba68d7661722f766b9e3dce4. 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/GBPFW2300171.
Handel: Messiah, HWV 56, Pt. 1: Chorus. "And He Shall Purify"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa97bfa4e81842270af8a2fab3c0971cde937d37cd5d9c0afc6914c8433c44d7. 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/GBPFW2300174.
Handel: Messiah, HWV 56, Pt. 1: Aria and Chorus. "O Thou That Tellest Good Tidings to Zion"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b18c857885a4efb1a909ef485e63fa482ac5fd9b4ad988abb6eedcf4252f75d. 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/GBPFW2300176.
Handel: Messiah, HWV 56, Pt. 1: Chorus. "Glory to God in the Highest"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8597946a788ded20b89f3c6e0198e7619aaed5cd1e4e9a3ba6ba59f13d2217. 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/GBPFW2300185.
Handel: Messiah, HWV 56, Pt. 2: Chorus. "And with His Stripes"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f67a65be568a3d8e9051bc6266522e81bcf31251cedd530215480faa1b7097d. 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/GBPFW2300193.
Handel: Messiah, HWV 56, Pt. 2: Chorus. "All We, Like Sheep, Have Gone Astray"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03ef6420a679d63b3cd6105e53650b486bf1ed38a26aa95a27ab0258790d2af. 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/GBPFW2300194.
Handel: Messiah, HWV 56, Pt. 2: Chorus. "He Trusted in God"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ecc2c842273a3ea0003fe4162f9b8a285da8d7d167b937628f5b50da2a6093. 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/GBPFW2300196.
Handel: Messiah, HWV 56, Pt. 2: Chorus. "Hallelujah"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c427c1eef626da27c51d865348609ae3db59a8bff0f4b2182773ea45e36acb. 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/GBPFW2300213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c427c1eef626da27c51d865348609ae3db59a8bff0f4b2182773ea45e36acb. 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/GBPFW2300213.
Handel: Messiah, HWV 56, Pt. 1: Chorus. "For Unto Us a Child Is Born"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2445be7850af0a9c7bf042f4111144d14be2a5823586d825d229cf52f5a3d954. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/GBPFW2300179.
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
Handel: Messiah, HWV 56, Pt. 1: Chorus. "His Yoke Is Easy"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd732a50a225d2fdae177482d3ba68c4320420b33957337f347251ce1da1399f. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBPFW2300189.
Handel: Messiah, HWV 56, Pt. 2: Chorus. "Behold the Lamb of God"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ae3167c59678a015d84eb593aefb422fceabb2ab18fde5b0a919b9314ec423. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/GBPFW2300190.
Handel: Messiah, HWV 56, Pt. 2: Chorus. "Surely He Hath Borne Our Griefs"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e82066260f5e02abb49ac46b0315ec285bfcb72ce3f8c988c67849d118be9f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBPFW2300192.
Handel: Messiah, HWV 56, Pt. 2: Chorus. "Lift Up Your Heads"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301f18d905aa51037b32f4975f23db80d7fad95f38c5d1c93befa1cc861b2d8a. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/GBPFW2300201.
Handel: Messiah, HWV 56, Pt. 2: Chorus. "Let All the Angels of God Worship Him"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdbefe795c4bdf16c1c9cd5d98ebd354f9b1b29904e8978199ce2477fcc38a2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBPFW2300203.
Handel: Messiah, HWV 56, Pt. 2: Chorus. "The Lord Gave the Word"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d5adb1e19a2bc5f30b24ca8faf312589b897963dc86c2deb817d3219864812. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBPFW2300205.
Handel: Messiah, HWV 56, Pt. 2: Chorus. "Break Forth into Joy"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbed606872443d06b8a92a1af4ae066c9da5ef8181c8f16b4ec3447ef2792c4. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBPFW2300207.
Handel: Messiah, HWV 56, Pt. 2: Chorus. "Their Sound Is Gone out into All Lands"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7734b9e337de8663eac39b91f6444c13bd6b340bae6629f77bb16d4e8f6952e8. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBPFW2300208.
Handel: Messiah, HWV 56, Pt. 2: Chorus. "Let Us Break Their Bonds Asunder"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24609fedcf8566b1adb7da9a95e139806b74489c9a9440f340a2518044867da. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBPFW2300210.
Handel: Messiah, HWV 56, Pt. 3: Chorus. "Since by Man Came Death"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aca453b8e521baa89cdc3164783ba488e59d6645d24d4fbf0a4ed4485d8ca67. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBPFW2300215.