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 0x0bdc93927bdc63fc5e78d8241a8d34628f0c489151c8f7f1587dc3fd5bf8d4d8. 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/0d335ba6-97e8-4097-b35a-7516c7d88a74.json and https://artists.proofprofile.net/proofs/artist/0d335ba6-97e8-4097-b35a-7516c7d88a74.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59eeddaeb477228dcd6cc8d06448598d312b1959b3c06a141ac25bd29627efe5. 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/QZHN92457392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0f137a4105706e13b3f4390fccf15fa4fc495ff0c9ee48edd64756cb7ebd44. 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/QZNWS2403983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcd9ef5b62eee2078ca1f7d229b36f3de360fb8a6e090630ed3af1aa60a5599. 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/QZTBD2409155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946a6dba9eaff048a32736afeb957e29165c18efa558d5130f7acfcd6c89dce1. 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/QZDA82384370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5938ca0cd7802d48cf265895f0253e2ed98d81c5414c177488a7fdea046d80. 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/QZTXT2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2ffccb88780265403b6107af821247dff90d578e0561e7fd9cd872b837dd33. 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/QZTXT2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0444c9ab1df248862a45db4018dd2dd4fb2e9210894829a0196dc2999d89ad4f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTB92272182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d649b3b0bcfd2d0773ecf282b67600eaacc03b5bae653770c28dbb88a50750. 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/QZTB92272183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e0501eceabd9a1e2eae9f71dd7707d6fd3c999fc28bddef79d6ffc7f23688c. 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/QZTB92272184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a97fd46e8a6768afc7284506f628d8c45ba4f175e85136e7b98a9b475b1a1. 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/QZTB92272185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb378ae0093db3578ba5c02e9dbc80a135c7975f140664af0375df7a393c4f1. 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/QZTB92272187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90965b1d4de5d526b1f0d834078abab0405893ff8eac46d99a82b45b4e5f904a. 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/QZTB92272188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103fefe61e77368b55e78f31f488c2caeab143e14fd5cdc74c0f82dbecb936f4. 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/QZMEM2264022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721d61922bd3a47fef053bf6b7c8be97980e5c35febf295415fa0b1dd74bac5c. 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/QZK6G2057348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ce03350f08435b566aad35487260a602a7ee4f0ea491bb94116bb41eae05a3. 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/QZK6G2057350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef31fa465b20af0ba49fc4138980ab15dfad4fd9261f33612a23433cfbac2c09. 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/QZK6K2438437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e41bf78df196ebebda736c08092581622b8e73adea29c7676962d2855889266. 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/QZMEN2417514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38c4d98e7e267458808374ae3961f7d88121d8b1e9dc63f10cd42b8d50f305f. 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/QZPLS2474210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84f6e9f7701c7191562062193ff2ebf0cab2f76ed9a84ef1c951a35795d1944. 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/QZDA62473227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4f300d72f6a69515bb8bf5204b32769e6d99834a8c476a05f9e64fd62c6761. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QZNWQ2461090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa223f11d3a25073a7034de9715a7ab148f9981208feacd6efa337ccce38dca1d. 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/QZK6F2446957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3874c353c4059e23cd48dc524232360a275d633c1d4d4883142c0c4f8b8c7cd3. 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/QZEQU2400529.
Girl from the North Country - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f60a82d52b4014892ed7a1c4d710bb3f38e32e2c847319f33d38bd6a42da13f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZEQU2400874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153ea01d8e322655663d1fdb2144618e20c0b066441cbc57d04c6935cb22bf95. 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/QZEQU2400875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e47a5cc49d9acbbc3a622b6eae5bafe53e0323c4e7a917532e378b62db90e45. 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/QZEQU2400742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e47a5cc49d9acbbc3a622b6eae5bafe53e0323c4e7a917532e378b62db90e45. 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/QZEQU2400742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3874c353c4059e23cd48dc524232360a275d633c1d4d4883142c0c4f8b8c7cd3. 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/QZEQU2400529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500b3b0704e4872700848e904c79151545a66c9c6ce0446e45e70c53854d7fe4. 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/QZLBC2400750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84f6e9f7701c7191562062193ff2ebf0cab2f76ed9a84ef1c951a35795d1944. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDA62473227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5566937168d75640f43d6f11d78da98ccab3112b66237e531aa8f3706aeb4b72. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ32476576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946a6dba9eaff048a32736afeb957e29165c18efa558d5130f7acfcd6c89dce1. 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/QZDA82384370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4cd0a3cad122d03d3dc2c9b00eaa22f2cdac2da0b0b662f4ab205350d71db9. 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/QZLBC2201561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689332167027b328709446a7ef562693d9cb73c396655c783d29ecc81e8a3191. 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/QZ93L2135725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaafa9154547fff170302118849296d19261058cc606c157fd1db61481021fa9. 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/QZDA71978714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7157097a386a1ed14144377cbf17e47e3789b82cebd6eb62de1929235fef380. 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/QZDA41833971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463e981fc1dd33688bba8b64798002ae184916456b5d9b3f4e9df5ad2da291a1. 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/QZFZ42478423.