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 0x5deaa150e6b5bd3be4e2a8a48f632c2494bf61ab2fa58cb5f96e10b298d90b3a. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/113b52b1-3735-44fb-8541-183ee715f4d6.json and https://artists.proofprofile.net/proofs/artist/113b52b1-3735-44fb-8541-183ee715f4d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beautiful River: Songs of Refuge, Love & Devotion
Beautiful River (Shall We Gather at the River) (arr. W. H. Plymouth for choir)
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 0x308b870d171859dc0610833939570aa530199085fcbefe4262180c8e15615746. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USRUF1010047.
I Gotta Home ina dat Rock (arr. M. Hogan for choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dbc1442ab0543177c13c57f67d9e9edc9553986ea72ea157159b288537ebfa. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USRUF1010048.
Be Still, My Soul (arr. D. Bird for choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995ea56bf1618ce5c2efa11ff700115d0fd4501b4b66b097076aeac66719ba2c. 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/USRUF1010049.
5 Shaker Songs (After P. Bates): No. 1. Come to Zion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6b591a3342eb3488b31bc7c6747a628611a6f71347a936acb9346f9ecd8ee2. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/USRUF1010050.
5 Shaker Songs (After P. Bates): No. 2. Love Is Little
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc4d6fff408726fe24fa442a3a70d4e60ebdc7052e1924e7f61d669c1ff94b3. 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/USRUF1010051.
5 Shaker Songs (After P. Bates): No. 4. We Must Be Meek
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6333a02b12108d4f3bf74ed98f82d6a9e23d2990cec8b6c2d827bee3ab8f2fc0. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USRUF1010053.
5 Shaker Songs (After P. Bates): No. 5. Lay Me Low
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306a4d0190d1ae0952737f490c6c02ecfba6f68d4113e732bb19a2c147f8c847. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/USRUF1010054.
There Is a Balm in Gilead (arr. B. Harlan for choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4462a36586d2cdf0d0ebb76973e1ba49623f6a02d805fe1575a339740c4b3b4. 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/USRUF1010055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabcad90b214a6985e10b4cfcf698adfc6a2d7e4bf2654e213e1329a723462e9. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USRUF1010061.
I Will Arise (arr. A. Parker and R. Shaw for choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bd85234c84044dddf504d595ca168581b84484036d191eb95128ba3046d50f. 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/USRUF1010062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5986cb9c68662a8b5faa8004df1062f43e34d259cf004e653a6b00349305c4. 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/USRUF1010063.
Irish Blessing (arr. G. Langager for choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c481949bc11c71219082d197a13d0177ffebdfeb62c84c17696ec36349d16e0. 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/USRUF1010064.
I Stand All Amazed: Peaceful Hymns of Devotion
Jesus, Once of Humble Birth (Arr. J. Kasen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d1d037948533b44534fdd7086a0e5fb3213bb72f8421431fed267dd3180f06. 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/QMRB31200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf222aa7efced0d9b78ab6543cd5c666c953d571a4fc323cc1f3d4009c173d766. 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/QMRB31200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd614e4e79638788f861eadd1b012a456660bb5f5a7f450018b69db576af8cdd1. 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/QMRB31200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00c6f5e55bd91010a593411e286ae5cd84634a05aacb75c48674d1e4a6ff102. 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/QMRB31200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56b46c3e5f29f89c71f4d401c19bd0a504bc5ad2ee066f2f502eacf13612230. 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/QMRB31200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baffd748c32fa112dc401c0d318590abdbb54ba98a61277532a9fc9c3a111f4. 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/QMRB31200018.
Jesus, Lover of My Soul (Arr. J. Applonie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57e8705a2f866e578028d652b24d5db1ef27ae74f71683746fad21209051024. 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/QMRB31200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5670d7ee01f0797223bda09937003c41885ade0ea16319c51c2b5d2bb0dc7150. 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/QMRB31200020.
Where Can I Turn for Peace? (Arr. D. Bigler)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6e22f7fea049e4415f2b936c7d6fb99d85bcef6b5627af4c01c26f339f5a36. 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/QMRB31200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4159c27e098e7672b842ce5c3a80320c0c5d74d5ce28a8864490cb2814da5435. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMRB31200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab52d658e32448e3bdc89cae091b242610b391c75df9b99349db62c6df6df1ac. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QMRB31200023.
Abide with Me, 'Tis Eventide (Arr. C. Gates)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0475ce5190a13f2ad95e72a6af7ef9ce0f5fe7f7f58f6549fce351094e6f35bd. 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/QMRB31200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daa0f35b5b377098c87edb6518a680008eb69b351e9fcc647212c11686d2a7a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMRB31200025.
Guide Us, O Thou Great Jehovah (Arr. R. Hall)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be607ce3cda0bd7a1204e31d0eb0eeb5b765aa287a84b0d18679e08a7a36275. 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/QMRB31200026.