Ten Strings and a Goat Skin was a Canadian folk music group from Rustico, Prince Edward Island,"P.E.I.’s Ten Strings and a Goat Skin and Rose Cousins look back on the year that was". The Guardian (Cha
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 0x3104b7ae30caf3a6a8c270bb9aa8f38b04ea1ea56f527777d1ce6bfe22c2bde8. 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/10b5fc41-7458-4bca-acd2-e23fe8c7f591.json and https://artists.proofprofile.net/proofs/artist/10b5fc41-7458-4bca-acd2-e23fe8c7f591.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x1aa8b8a90e0eb515f40558c2bfe93f47293e3f270d849063dc675200cfbc0429. 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/CAD1R1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2890f88d056bce1a9a68e2cdb8169fe89bd678bb34c220d33b3caac760c1f1f8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAD1R1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9469fe081f226c66bb71cab86cc42416e5d4d7124d106d578971d420e70e239d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CAD1R1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06524600e87fbba83bf3e09b78bcbba37066dd48452a56e40a01bf58a3f0477a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAD1R1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da87003cd8a24b91daf4a96f56f387030961f826378d1c2a8601273847e7549. 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/CAD1R1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4aa4f2cba41ffb9e8a8bf4e140c50fa51eed222ba016963d88e18df3bb6c38d. 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/CAD1R1300006.
Napoleon's: The Drunken Police Car / the Box Reels #2 / Music for a Found Harmonium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a58f544ec00d8e61069d14ad1d5a08709080af9c68c94292ecf9a6ce39790ba. 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/CAD1R1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed798eca07f7263513f5840b36e98aacc6c3952b39d4ce2938b71fa4ef70c89. 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/CAD1R1300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd0373982c020ad075061c6cb8e39b29fc3866c1a498f15b765623628053115. 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/CAD1R1300009.
The Byzantine Reels: Fir Bolg / Tastes Like Grapes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeecbbca5721e3047a71855dc26e314b740ea8cf49276edf5e835d0b118abefb. 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/CAD1R1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa177f84367d310fab74763dedf92b0e6d5d634f37f2596f7df77e94cc5d1a46f. 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/CAD1R1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2228f819df6b8bd3f497b4a316742b26696f4a644844b0aae34c29988668d065. 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/CAD1R1300012.
Medley: The Ukrainian Expedition / Coalmiminer's / Mustard Foldies / Réel du raclette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1e86e1dd4defe5510ebdea20569efc45bb00f619cf7f3e5cef58056a15f726. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/CAD1R1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f74a2556486aa813697a4d2f61b03f1e1dc3e175e255ecf050a446e216c11d. 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/CAD1R1600002.
Medley: Igen / Magic Mark / Alan Macpherson of Mosspark
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65199a96bef2d53d52eae83b2e600c2f83e787f49570a93d2f6a4edf3ef27db8. 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/CAD1R1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe1998805043bf36c68af637ae8c12af882a51cfdef68a6768ec098dba9a4fc. 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/CAD1R1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccc0e7d01415830e97d05039931172c2a43f86fc6becf29351a888bc3e06fdc. 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/CAD1R1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e966bc3be92d17c6fec3b2e6ce16139c7b1aa1cfaefa662256448ab0e8c3164. 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/CAD1R1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7c190c229c882a7873fa51cbf51c4420767ab6dc69aed0b7b60a90617a2fe9. 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/CAD1R1600007.
Medley:Lament for Buckles / Ron's Broken Chair
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe81fc61625eefd5748b527e9e776754c9c0f48f8bf9bd5dd0fd4e4a3e5b3150. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/CAD1R1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724e23c9dde7b940e8e4f52e4ea25eb79bf388ac55973351e1c43008adf1db21. 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/CAD1R1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf484e26ee07033484cb7f13b2dd80233b762af1cdd3677ae8cfb009b50ddbc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CAD1R1600010.
Medley: Duhk Duhk Goat / Begåvingsmrschen / Le réel du poteau blanc / The Midnight Visit / Katie Hill
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67684281c0e76bf26d038b58deb098c33a847cff9d49aa308ae4306e756947e0. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/CAD1R1600011.