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 0xf42168520a7afcfadd40ad24476f537799d490b6a61c317e466486fe2a7ddce8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/693418c2-c1c3-4e43-a1b6-25c0a893de38.json and https://artists.proofprofile.net/proofs/artist/693418c2-c1c3-4e43-a1b6-25c0a893de38.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Go to the Devil & Shake Yourself: Fife & Drum Music of the Civil War & 19th-Century America
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 0xe34a4ec7a9dcb202269c82e69c9aef44c05d0866bd335e9cf54b5a55236ed85c. 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/USHM21853265.
Lady of the Lake / John Brown's Dream - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aba993cbf506ef4835542186b4ad86eb0d9ae3280b67f0eb849be07def311da. 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/USHM21853270.
Paddy on the Handcar / Kingdom Coming - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6bf170e494bd6cada1b8e158f02a173107e328d4258e0389effb263a3c88f7. 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/USHM21853274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315b4184287d1645dfb1d7b87a20b823c77667ed0157c9b5ae2f3508b78013a5. 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/USHM21853279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e8fa95e16dd96aaa13c3f7aa192dd1212719e1d56d3556c3a89acde980074a. 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/USHM21853264.
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
United States March / Abraham's Daughter - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb730439c3ed8576a3c846863dbe439797d47701b172975e1402e8ce8f9b8b522. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USHM21853269.
Wearing of the Green / Paddy Caught a Rat / Guilderoy (Quickstep) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e36f377a171f1fc5765f92eac693b3e604343ede818b56f3c6820a68bb2386. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USHM21853271.
Bonaparte's March over the Rhine / Bonaparte Crossing the Rhine - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe714c0b0e3fe423c3b8720f1379aedb73973ccab052e578fd9c9fc54d0a9f4e3. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USHM21853275.
House O' Duncan / St. Patrick's Day in the Morning - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d5bb247b08435869aebae59e66f0e93d36b56ef7b42f3c8a9af5a798a7874b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USHM21853277.
Shenandoah March / Twelfth Virginia - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83221827bb12c9aa033c14884ecd5bcf6125536ea5a228f9712ea783c131385. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/USHM21853281.
Prince Eugene's March / British Grenadiers - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f0ce7ef14c52e49755389bd338c2f6bc4ff4f17a8f909572afee67bd4db80e. 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/USHM21853283.
Music on the March: Tunes of the American Civil War
Fifes & Drums of the 26th North Carolina Regiment (Reactivated)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d0410ed99c4ef1b511e4d3437aeb004a8b6db9da3d21beaa3933df88cbcb28. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHM21855405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a227817bd837b92ff3f54abba6d912ae7dab66caba250c6e439fc0a5d0852d. 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/USHM21855407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14662aa8c9a26e462affeb9b2cae6a3e1ca8bb3c6d03dfe8bbc06558e4a85db0. 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/USHM21855409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1eb894177e65bb98d12d1ccf411057fdc7304bcf3c54be30219064db89809f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USHM21855410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cf6de565f9f7bba93663862a6870059f47230dbf54f4a9887aab9c0633752c. 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/USHM21855413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff0193d8b74dcffa5c8d80582276b53bc81894e62a2aacb6e3e46e9e6a89ea5. 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/USHM21855417.
Bonnie Blue Flag / Col. Robertson's Welcome
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c1c7f2fd024543ae63522971498abbf147a3e621d523f0be711d2fb5cabf69. 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/USHM21855418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52351023808009d07414da8113fcd4560f7838a4e99fb85a9c4ab5039f5fbefa. 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/USHM21855422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfb552fca113167bb5c78c6490dcdc9a957404ac890114f715010fe66aee200. 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/USHM21855423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9ce4daf045c4db1f2d54507377e080648f84c38c37147736cf68f21ce36f34. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/USHM21855406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48885c0337c12ef31739005c72ee61c853762d704dc2d4a465520c91a4e3c96. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USHM21855408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cfb45eff78c7a5482ec82906e18d22adfd8510d32832db09edc73f4c2cf057. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/USHM21855411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6582ef6829f218f45cd1090347002df67539890e169c049abb1ca128c2a6271a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USHM21855412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465d36fb09e9063ee1db920a9b7ea04fe1e971e6b5bf657b3532a07ed8411c0e. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/USHM21855414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0580da10ea451ae581b255a7775a2c0027398d8d2336f9e0ea3218cc335de62b. 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/USHM21855415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d12aec1da60a7b8bdf1977bcd90775318f1c4934bd2e1ce17206ddbcbd1be79. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/USHM21855416.
Granny, Will Your Dog Bite / Ole Zip Coon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f12ed2617fd9f40c4cf0041979897de3abe1af9cdeaf58775363808bb24400f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USHM21855419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee813dfeb541725d9902dacb6686fc98545c0ccd4ac2b48507a6f6a6fd72563. 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/USHM21855421.
Wait for the Wagon / My Love She's but a Lassie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97829b4988c48005cd2a7b9569dd49e91cf2bf351dea58fc94ab3e0b7502aa7. 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/USHM21855424.
The Campbells Are Coming / Do They Miss Me at Home
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008d9667b30d55a556bb1685d77d3c78eb48a0a6530d773108dfc7e466d91644. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USHM21855425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd40dc8b91f209cc12a638e4693b8fd913a797d6a2901771419329f971dfad3. 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/USHM21855426.