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 0xe4def84ff9c04b9155677246e66fbd0c4638bc5ea5a91e9163f9bca68854332d. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ceeb9144-1abe-4638-849f-86621c0af4f5.json and https://artists.proofprofile.net/proofs/artist/ceeb9144-1abe-4638-849f-86621c0af4f5.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 0x54307e00a152091ccf81654561ccfca0b7ab8d72892fb66cba128532bd1a476d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAGS2378024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc554ed8756d97ac4d52fbeedbba1e304d39b1d8aa6cc63c525bbe669f479a0. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAGT2301101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba66bfcb4508c37e20b8604005ea38518baafb58db9c95373e5bb524183bb81. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAGT2301102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b039f0fb2c8fa7f16429ef9b12804dc6c00cf18ced7f8abc12e713e164d724. 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/TCAGT2301103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f6b63560b1b159557e559bb7016e30693521b18eaf1f65de91e752454e75a4. 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/TCAGT2301104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ed9aaf6e102ce2f139ca66fc267baa3378368e3cb47482d8aab21be9f08485. 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/QM3DF2273242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f2443336ec86c3fd68f7164b60a048bf07ded255c08f1ca5d161d749b61974. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QM3DF2296227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2773ea8d128c60e1e46f1469769db050364f055c93a7b26b92c631ca600d266b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QMANG2255442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf218b4560b12acf2281dd57066dcda18d2d5c989ff5df19468b0f973040c7471. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/US3DF2403395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb154a4dfea4d20707a56c83117add13c07043a5afe37178231eb9ae2d0b9df3b. 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/US3DF2423253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28bd83151b0062d3e4b771c57fc321671ac3db37b6f1d67264cb7b74e550b54. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/US3DF2454973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0da3ff0931682480c5813b17fe2895fde0d9f265f79d4721f00cc4e815ea85. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/US3DF2482555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b8032bf05ced388461de0b5e35c255626f3b8a909c8c03f33fc215341c7a2a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USANG2409272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c9c5355514ce1eda23ded3744c013a6a4e8a787f671893ab352d888b536c32. 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/USANG2421709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31cb31499227f7b6f91c7a5d3e77e5698bd07f4bd0547f55dd57627a3cb13a89. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USANG2440163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46aaad2c5fbd89ff4386806e29809ad78f8e9b705d621c7cf76323bf2cf11f9c. 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/QM3DF2414863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46aaad2c5fbd89ff4386806e29809ad78f8e9b705d621c7cf76323bf2cf11f9c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM3DF2414863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb257645166c8b46319029337c5d99d372905c53a6dda7ade0b1c78c85277c3c9. 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/US3DF2502393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f050a9951c53419f214a18b3cad0d57d226baf6cfcc89d59cc68e2a173b2dd6. 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/US3DF2502394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b596c4b7cc34b2e25dba8704c129d1c5c1d227b5a02b765cff64d2f455a0633. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/US3DF2502395.
What I Found - Live at the Good Shepherd Chapel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba54de5acdd0fb6e2f439e99e7bc0030aa4fe184c82a59ab9fa1805c211814c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/US3DF2545405.
The Songwriter Initiative - Live, Vol. 1