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 0xd30a78d9afce44ca63b92d6cc93ad45697012b776d3884f914b0c0d19bd8f16c. 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/8ad3c5a4-d993-47b3-9c2a-1ea9bf985c60.json and https://artists.proofprofile.net/proofs/artist/8ad3c5a4-d993-47b3-9c2a-1ea9bf985c60.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 0x92f9398f680b6f52b02c6ebce03967d1a5e352089cafe6912a737d8ec3bfe640. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/NLUW22000947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e181297eed8d3340a69d56008adcd947e47f1ee96d22873113ac5d043da9bb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLUW22000952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835931e684acddd6f2da6420ca97d2dcdadfcfb2d56361a34e6a512ce2701756. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLUW22101253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5bce489ad2fbb371317336b0b8fd1af85ac7353a53e58ed530027081ebb7d1. 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/NLUW22001106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230f9db1f126b6d9a6d53f13f34f2969ebbc12cac7792935d07020418bc7ab9b. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/NLUW22001107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1831a27f5236683da9dbd60f7b0c2bc3994b55427070f69486532f65c8cf7607. 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/NLUW22001067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6d55335feec1963d423dec1e26c0309a5565fd8b62361ec2ef52dc34fc4d1d. 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/SE3GO2016701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9401545ac7b3a0a83bddd76d7bd1aae1cb7adf2a37ded0e707e9edb784dc103f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NLUW22000996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8360949aaa49170533fbff1614c9d8ded41b0f2a6fe24a9a875068c52f31a900. 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/NLUW21900907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b52758f976407333c14f9f40d55a1754d5dc0b9fff90c5372ab290edf250581. 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/NLUW21900893.
Never Forget - Nicky Romero Extended Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1f3c3291bb5274487017034adfa049ca2a4240e876325104ebd42d8a85530f. 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/NLUW21900894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67cafc77f44c63c265d5e2e56b5ba419f8ed8a4b5cb63a8b8e45aea15669707. 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/NLUW21900858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b8f274d9b0e7a1f259e91559b567513a30da0041f3bb05b0521c6384e547cc. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USLZJ1911915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51db5af86a282c0a1c97c7ff623fd41257b1dc95a20865275b01cbf6c7f2eae. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/NLUW21900833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0091942c0f7c20820cb67b8a40a022990f44da02f4eb22da07cff665a3270a4. 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/NLUW21900834.
Bittersweet (ft. Quarterback) - Junior J Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e0bc0856cedf5b5677118c39df3901cc064620491ae46d942adb1243fcb3a3. 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/NLUW21900779.
Bittersweet (ft. Quarterback) - Justin Prime Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b1c88ff3287b75b5cff5b815128b6ca089860907dc8361e58cf32264edeb4b. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/NLUW21900780.
Bittersweet (ft. Quarterback) - Krosses Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da36182698efbf5ff9003263a54dbdc6da6c54f71dab171e29b594de1e66613. 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/NLUW21900781.
Bittersweet (ft. Quarterback) - Firelite Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c2b0bf756c7d066a96ea38c10f343e3a40a161ee0993c418c78be37f540fc3. 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/NLUW21900782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625377f8ffdb15a06af6a2d4d575dacc359727ed56caeb07a32689ffd5712ea4. 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/NLUW21800742.
Bittersweet (ft. Quarterback) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f01d0f205606d5201ae5dcb4846d7fd66c8c82bd890d2ac909e18fa9871b146. 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/NLUW21800743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9016f4deec9026283dfb71cf6cdb1a8cfd275ccd8488999a82f377a054be6a78. 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/NLD681800735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd85e706ec47a052439c12ab14a4e83bbeacf0f0432a78e264bc90a52f458d1. 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/NLD681703193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63e8087b843c1c27d5029c2b23bcf94fa743c1dafd3fbee842aaa207dd7484a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLF711712192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ce30e531c23857de685e9c527b12e5d83b51f307d12f482756a2d4b4ef9aba. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/SE3AA1700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278843f7887a1e6ba174b5b0feadd59858a1b2fb20d6f83af54c4a2744296c73. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBSMU3494263.
Miss Out (ft. Max Landry) [Nicky Romero Edit]
Miss Out (ft. Max Landry) - Nicky Romero Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec0552f3f39dec62d4642ebaaf557b3ab0d32e972bbc40bd1f674f29676c724. 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/NLUW21700508.
Miss Out (ft. Max Landry) - Nicky Romero Extended Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79bf57efa42f044bb5fbf9a0d3f63ce45e1b9875b4409f823fbbcaaf86966ea. 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/NLUW21700552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7757d19da1f84387849385778b3e43468f0f330444b3acd71ceeb36f4d7fbea2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBSMU2808169.
Faded (With Me Now) (feat. Simon Erics) (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862f3c17ba147b60ac0278b7754261df5d7d3cbea593e557940c8372547d9dd8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBSMU2818101.