David Harold Blackwell (April 24, 1919 – July 8, 2010) was an American statistician and mathematician who made significant contributions to game theory, probability theory, information theory, and sta
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 0x108aa0a052b8493e7109d49aa58092bca6738f0cb06561ea982e28bc7147b425. 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/cdb309e9-cf9e-4aca-a650-99719d5e924a.json and https://artists.proofprofile.net/proofs/artist/cdb309e9-cf9e-4aca-a650-99719d5e924a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bow down, O Belinda (Performance Track) - Violin
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 0xb54ff79d91f141a095c56f8c129af078811669411109fcab2e45143793d0c3f0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBN3Q1302035.
Bow down, O Belinda (Backing Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a8e247f12f5e26c80fbbd947d5fe73d8f4500c9a9e6127d59f1c1266c34140. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBN3Q1302036.
Under arrest! (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22a87e0945b884c937e636e3b464ca99111eccf30e75f3305b83885e1dd01b1. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBN3Q1302037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ae7dadbdcafad3a5d49d64b070d5374f0cf2e5d822e875cebf54ddf0902442. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBN3Q1302038.
Someone plucks, someone bows (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc348b5429dcf42e0999f0d225cdea749a38c327da59c7fccc1390a3b1f40b81e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBN3Q2202145.
Someone plucks, someone bows (Backing Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f59b2f9b6044e19dd405a08ef1acf65f10b9747ce11db9916bad6a1aa06ab62. 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/GBN3Q2202146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23b1b14ba8ad66e70b567414cb03caa695311fd39becd632b4129f4833ed357. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBN3Q1302041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5799ead14f3e66dd1515920cbc4e087a20f6122e2ecc17bf90d2db6f676d25e. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/GBN3Q1302042.
Two in a boat (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02c6ebadd73aa47777705cb558dd9e5dd800de0db60a46b074ab30604416577. 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/GBN3Q1302043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf6d8837cec19d67bd83855c595519f4b0829199987f5f669b1af7231573b71. 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/GBN3Q1302044.
London Bridge (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a88cfd6869b7e7b2cf94ceb325ba857c0f584642487528882e5c800da8a706c. 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/GBN3Q1302045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c36c2c46f0dc84348cc50e7da4a434df41a2024eab8056c8e9ebe811384ee9. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBN3Q1302046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57dd1eeae41ee05ea6ffec2d957c505ca92685bc2d4e1a246ba6652c7dab806. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBN3Q1302047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d6783488bad1763731385ff3f9fd1e9c08e5187c3b086400ca0fc6cbbfe67d. 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/GBN3Q1302048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6a9052a772f6aadbc84cfc3c0dfddad198ac1b8925da2d6adb584259c6b13d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBN3Q1302049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd477034df9d7cde1e439c59c28d4191de238f37d3195efd41209d950a5a4b75. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBN3Q1302050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4315ef11ef8537ddcee6cef8d447e140ac84e93c0dc123042e30b9243861115e. 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/GBN3Q1302051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fda6f534f5bd9e180060ce782578f5746c0c9879731e310af11c63435b2297. 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/GBN3Q1302052.
Katie's Waltz (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d8f18fe594406df0523e570410c0ceef2a93c1a9e0eee636126e5fce924d3d. 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/GBN3Q1302053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66c1a0f3b7e82975c27bd17262ab799e10004ed887af118f7a82200196b0f79. 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/GBN3Q1302054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbae33f51ab344154a536c01d21c05110484246ff63bdf683d15dc661771bbff. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GBN3Q1302055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce7a905d822de40f0412ac5b26c18f9f131c36accdca2becbd06ff1b215c958. 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/GBN3Q1302056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6bc61dc84727904638f6622b2265bf72e2b5a3d362cfc870f61ca7365d86cf. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBN3Q1302057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a75619369ef6855e7c2d15f3cdc49bd8ad8ac42383cdede9ca9f4efc4ab5197. 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/GBN3Q1302058.
Rhythm fever (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c42961840ee8b09eabc084c47443eca2e627d360a35e1d67069ca990a641c75. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBN3Q1302059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321e86b7614d607937833a18b1db824cf4d3d84cf868a97f6eb4184b42f35f4e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBN3Q1302060.
Here it comes! (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d525572209580492281ca4292eb80b7066c04901abf92b6f2f8559f55ee607. 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/GBN3Q1302061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe441e963f764189893e9814f6c08ef2399292a0e95b6b7da371bdf73f602a58b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBN3Q1302062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13dd92946f1b84d34ed9fb1b2bbd8060fc1e6b5570e0d711726583849fdcbd7. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/GBN3Q1302063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bde2d1d2fde6c4f9292fa4348b18873048d06958839deadebc649274f35fbd0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBN3Q1302064.
Rowing boat (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fd18227d858705cdb61d737ba7783b715ca4a6d081d9c6786fb34f33e2bb5a. 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/GBN3Q1302065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0907c4328ad8d050222d7c7a62d6c1d272b4507fafa94e7deafbad0aa9d8d9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBN3Q1302066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe3a552cb81462614bf826ad2c90b85e6970b1d897e4eddd5bf43245e072557. 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/GBN3Q1302067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eebabb7fa8457def97de79058254185feeb65b93951c3fd924e830aced52ff6. 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/GBN3Q1302068.
Tiptoe, boo! (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0ee53431529357b2335d64cb24a7fc4b51b794c96e1c113dc349f40c2e6451. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBN3Q1302069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776b0f14c4a4a51fa51fb099846d57d7953665b106fbd4231d6ac1e6a9175e65. 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/GBN3Q1302070.
Travellin' slow (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd012181a18fddeb2ba19de1298b719be9adc1661ea567f695ce1dd621d9dd445. 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/GBN3Q1302071.
Travellin' slow (Backing Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113a6de6be0906794d97cd24c8d764b7307cfd1911d20a85366ca4bfe3440954. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/GBN3Q1302072.
Lazy cowboy (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cd9c7da7fcb61f1129ad8ca20e7cada07384bfbafc03acc39ce1a5bb3f3066. 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/GBN3Q1302073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7786f6cb32f7fde3254ebc91f9daa50e5348c7c41faa74158df75ebfe48f98. 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/GBN3Q1302074.
Off to Paris (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd203e2238f1a6036c33afb0b67c286fb3aa753d76e5de4a131fd24d9ff7a3d2f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBN3Q1302075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc06eb176e5a4ea8f5900b2c3470a0a0f809ebde756ef27cdfbe558eafc8c2f6. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/GBN3Q1302076.
Clare's song (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b320a65af0da1f267066210f1932fc57090c676f2c14136067f9f3c7cda02b. 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/GBN3Q1302077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8d5b99eb3b5cc025a9d0c84bd6d593f5c37b8f2d99e661754bc3f0d0f3898b. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBN3Q1302078.
City lights (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0342258fc93f21d48964c4c4c8cc73868f7a874cc357500471d90e4465385c8. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBN3Q1302079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56646679d605dae2f4623b2a892719911844c2a8f5720f127f06cb77f739e42f. 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/GBN3Q1302080.
The three friends (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97308655e726c5ef221dfedd3ed0fac02e968625abc0c6cf4923ab04ca3b2a78. 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/GBN3Q1302081.
The three friends (Backing Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ccc606600bc3ba4707fc31ef2f7ccc10a830c51fe08d4d6749bcc417473d8b. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/GBN3Q1302082.
Peace garden (Performance Track) - Violin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f919ff63c1624cdf55d71b6f0d1c8419c996966667c757d0212b01d7393661. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/GBN3Q1302083.