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 0xdd3241e9372d274a74faf64cafc605de575d45c3cc574adfb4ddefa5633b3441. 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/7a48595e-7fce-4b44-bd1c-c56d869846c6.json and https://artists.proofprofile.net/proofs/artist/7a48595e-7fce-4b44-bd1c-c56d869846c6.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 0xdf1f450d6ce899dbcedbdd524ddf083903cd695ab174e04853d8976266db1196. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR10S2233295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac9dfff3a2c3a2d808c5d5707b870f8bd1b4a486effbbf68ba7c183cb59211a. 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/FR59R2224343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb77d49398e27419948830b06a40b4eac1a2dfc039b7ec1d42642cbfcace7766. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR59R2224346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cc885b0f92ab42e0f4794e8bcdfbd6fc3ffc7e464d28b1d8ecbb02ad5b7421. 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/FRX762186111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce76a43428d84f480ebdca15b0f446574b86fa809794711d1da2048d8b233074. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR59R2224341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5601badafdff7352aa54c1196a9556af8770f3570413fbac0ef6b3bdb550524. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/FR59R2224342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac9dfff3a2c3a2d808c5d5707b870f8bd1b4a486effbbf68ba7c183cb59211a. 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/FR59R2224343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1f450d6ce899dbcedbdd524ddf083903cd695ab174e04853d8976266db1196. 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/FR10S2233295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ba9a2957888c82070c8b2e22eb445b24448336b4339def476e465bc60197b1. 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/FR59R2224344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c20c07225a0fd8ff10537c7f81eb3bce052b3a6016f0ed97b743c3b2e82401. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/FR59R2224345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb77d49398e27419948830b06a40b4eac1a2dfc039b7ec1d42642cbfcace7766. 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/FR59R2224346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2f91255741f37773bc702cdfbfeef66fb085a685eadfc175d5557a621e11ce. 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/FR2X42252659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dba64c7af02d4ccfa7b59e623d3d10620cd922545bc48eaa17bc58ba1e0e4ac. 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/FR59R2224347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28e49c428f55bf57a1c27ff8ae1182cf7e46abecd4455e0d3f412bc59e8cfa5. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FR59R2224348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1ba8ed781134f1d9caccf162d74ec3cdd436de5842b560adf1e87e47d3f1fa. 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/FR59R2224349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5889dd6051b147ead123d41618eb8e1cae7f4fcedf60925e47bfa86beae82f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX872342869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6272716469307124b3b217952342980986fa18e44100cd98dc57b53022b44e83. 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/FRX872342874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad67c873ac7faed0d3a21f5904e5230826e37df3f0ef36da37f4bea2f41738eb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX872342867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a121ab6077ebf6cdacc877a0ed78623eca977e63f7e72c8e3d06d35d93dce2a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX872342868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38adb39e4a47909c70a2921e1d99a52fa88d1bf3a2b2204b3a5457534386f4d. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/FRX762327111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555c7e762290ee1cb140a1561515e2e87567e48e86ac2f47c0adea2b38729be4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX872342871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6272716469307124b3b217952342980986fa18e44100cd98dc57b53022b44e83. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX872342874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5347265b0dfa6b26a9381dea6abe4468cc2d76eafa7b1aeccd88c359dc4e0b91. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/FRIDO2412643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac9be7ee09143e67df43958d0ed90db2741d0604b01a9edd2f23f89c8aff421. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FRIDO2510207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50690c52a5265411e64fcb6e1c3ca1bf81c36fb09698bf3765b6a69e4f29ca6a. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/FRIDO2510235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac9be7ee09143e67df43958d0ed90db2741d0604b01a9edd2f23f89c8aff421. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FRIDO2510207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3e7a5771e3efb5aa2b83891b13400a9da5d6722cd34a6b9eb704806b5b0a7f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/FRIDO2510237.
Un soir de plus, II (feat. Araujo & Enfantdepauvres)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895f87cdce6de5c41ece370a2ca555eddc8f48b6e47c3c4540cc65db452a6f59. 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/FRR642300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895f87cdce6de5c41ece370a2ca555eddc8f48b6e47c3c4540cc65db452a6f59. 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/FRR642300153.