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 0xd121031936ac471992204f12e26bac5e0255c1ed1f6b09cfdf1f586d54535bfb. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75443ea8-6322-4f36-9b13-08a2b3295792.json and https://artists.proofprofile.net/proofs/artist/75443ea8-6322-4f36-9b13-08a2b3295792.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Regimental Band of the Coldstream Guards: Marches II
Crown Imperial, A Coronation March, 1937
Regimental Band Of The Coldstream Guards
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 0x81a929ad323b675db73bc878492352edf1448f4499503a56343f8136bb8a25ff. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USSJ18800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c235e58db8fa30af4362d0d6125e7e7dab8644e4d354fa47e5ae84995c296fd. 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/USSJ18800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128199a1f62127c009ebba9fc48da966cd24f8da73bc8bc8d0c8d53c39faaa15. 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/USSJ18800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda75a980bfd1abf6426188c38f61e854f7b06ac8f7fdea54099e131af9ad2f49. 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/USSJ18800023.
Brigade Quick Marches / British Grenadiers / Milanollo / Hielan' Laddie / St. Patrick's Day / Rising Of The Lark
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366ca3dce330ed3a7b9119be5d7ada94f6aa6f94f4d2cd623b01c395bb95b92b. 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/USSJ18800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573978aa3f228c6006ef948f257bec3482b858afd24eb6ad95a436ffd0f782b1. 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/USSJ18800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8989e86166d4b75c13a1ad8293a88c42fecd7d14114124f6cdbbce2b3297a1. 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/USSJ18800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f23beac67f5c526f5420194ea06e461c858513cc950fd02645fc1523cb4bc9. 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/USSJ18800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4d2c5f032e9754fefa371e59979c1153ec2f6719a6896817d3d24c788a3cfc. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/USSJ18800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa19b75fec3177fc4cf747d589b22d478db49961a8db5434c1a5b27ba1f7cc4. 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/USSJ18800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36189c816206d1fd681e43f8bb2d0e782f6cbbc94fe5a82d1ff9196f78995b9. 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/USSJ18800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6b365fd547721f637a5d89df370f53baaff9a784552fc6c5d8638ed3cfb401. 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/USSJ18800031.
We're No Awa to Bide Awa / Scotland the Brave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd87765803a041a58c687ff4ee13ea670b774544081d99024dd4fa6d835377f. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USSJ18800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5578481ea6d91a130ce22b5762c642560f3558c2b71c6f95d9072e003efabd21. 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/USSJ18800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75930ab34144c9b4d9c36eaa7546d69313d4e4e4cec550821146dd5ffa91eee7. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USSJ18800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62da7b8d20330c193e8244ab4e5c50d6c9cd53c984e77b57a6bf4b5530f222f6. 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/USSJ18800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0017f40f14e89ad0066d28b01ce8681b86d59b08f239251a2faa60224004124b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USSJ18800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2eabaf68c9c5bc07aeb0853524137d8232178f361667eaf34d990af6db773bc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USSJ18800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe089f9c7034b126fa4db8ed50eddc3a0b8ec996a13163207b8ab94156df06076. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USSJ18800040.
At Their Very Best: 45 Essential Marching Band Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba688aac5d5db8893ac277b6316516443a7e1ca6d3c80e6a7d751bf9e327944. 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/USSJ18800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9d9b8cc5e0d5dd5a26b978edfea1ebe8af0f71b5d3f4f780af8d29e15bdd2c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USSJ18800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ae7cb935ad8bd600e40ab4a560a8b2b8e1a276d04bc97d61bae6a09b226728. 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/USSJ18800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce3cc5396c9ef5c9686f477c45df0c410795dbdcceecdbef51628ca7a4b2642. 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/USSJ18800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb360a3843eafca0ff9cd43921b9a3281e37e3752bd2d92f2d31368416a8b3d56. 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/USSJ18800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2471ae55e8e0681733e8f2a4c6ce0764f85e1fbee6707692113b08507ead6a. 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/USSJ18800063.