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 0x723eac64f89b015d5c6296cb1468011224cf0d6e5fdf45edb98e44683030e124. 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/e80aae31-7ed5-4fdf-acaf-1a3587e163bf.json and https://artists.proofprofile.net/proofs/artist/e80aae31-7ed5-4fdf-acaf-1a3587e163bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Celtic Woman Presents: The Water Is Wide
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 0x11025bddd2da2c215fe5f946a9bf9cfb7f66701a531d6e211912b1b1420a5207. Chain 2 (Bitcoin): anchored in block 957959 (2026-07-14T05:54:20Z), 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/IEAAO1600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9e17fb5084580b5d6a549de51e6a20fdac03c3cdcb370fd6c309642b880242. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/IEAAO1600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01ced28cb2fc79c6e9efb3ac1714ac224b6952a038671cacc7270518c804e3f. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/IEAAO1600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153ff4964aeb877547c217f0a848d313c0b7cc0805f1b825bb1213467b7ef1e9. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/IEAAO1600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5156837a1a8e8148e299dec0af65fba78210897e31a98ef55d97b07fd3d5f3. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/IEAAO1600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503d8883929b96e25bb3220f8288b9361abb94416b40dff3947ae20f98d04428. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/IEAAO1600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d00075a411078f6899dd6825599680ef4437c301e83686446b2de213b47bb2. 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/USB4U0900247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee06a3e9f995f298046c57749f86233f7e6adf615311665630e586e0eabb91ae. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/USB4U0900248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5ade93b2c4f360b2b721215437fa8be768cd689c11b560a8111a5ebd1512a0. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USJ9V1000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786812578ffb7e9502b29beb65a18b09b586c3e0dfba187e79c7d84972c6b098. 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/USJ9V1000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd889e0b26cb52e1752b017ac341ec8313c6f5873cc41c4a88d93768206a7d125. 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/USJ9V1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33aa8083f76171b24f3e79065469447697a00d807c745f441cc4be0141e5d94a. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USJ9V1100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1b7c5ec41768b1d060ac1a452441a4625c0f6822ac956bed912a92b1529b43. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/USJ9V1100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192d536fdce4434ec3a049e42647503b56db3e2285559ca155cedab235e742fd. 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/USJ9V1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb1d2cb2a4ce7c2f28b847c0a95efa04ed034fcf35b336a630c986bfe745912. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USJ9V1100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa733a95d007d48419286d171c7df199624ee552d1a2710fdcf3a3ad785b8b541. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/USJ9V1100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dff7f1a6a08d4c52c8179a678ae99ac5eaeb0db6fe395c870bc554c99026bb. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/US86A1800116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d35c070130a3245fba6baa25c7a31a65ea0db08aba2ebfd5f251a2c1d05b70a. 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/USCGJ1796845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022c77e3e69602f49214c50a03a55701814ebeb85845dd3f15a4bd5d15d7bb42. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/US86A1900035.
In Dulci Jubilo/Sgt. Cahill's Favorite - Medley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c5a913174ddb4cd78636671a3b002d30523001392dd99d194e1278ed4b1412. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/US86A1900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22e1536edb9b4efdd58df128df2278736b343668dcac9b641d632b204f8e5d8. 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/US86A1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d955b6a14a99a4e3488c82acca7ac5feacb8e85085d33dc4caa3e93fe8bcd0a. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/US86A1900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93244a34c300a110831737d2e01e4b24a760b0e54c360178ed1ab8b1baf88025. 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/US86A2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e76561eb43254673f7e7d2dd9e357b24bf848bf1841af5e3de03a13f5e216f9. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/US86A2000095.
Abide With Me: Celtic Hymns And Songs Of Faith
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6c7555175d65d21e67c6774ba55c29e7aef1d933a9c589300514e0ac6425f1. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/US86A2100479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1c90e51b03d49d9f44d2566417c5acae9be6de750914d92764e2df72d08327. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/US86A2100481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cabc54799f6d6b7fd10d408cace9d35e833fb0b00371d59f251268d034b3207. 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/IEAAO1500006.
Decade. The Songs, The Show, The Traditions, The Classics.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa73a152f0489483f22313e7e6055cd9ab21fcd1f0b5adbcab3d346b0e136740. 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/IEAAO0500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde084005980223348e3da03aed1bf48ba8c7fe76b323aacf7596b9ccf42e0420. 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/IEAAO1600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbd69a75d72522a7664e0bc17a71c37835d2fa5fbeba50e4109af5953c4ec3a. 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/IEAAO1600024.