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 0x6ff5daacc0e4fc07c6347011596862a242ea47eaa4b8b61652cd7f99e6cd012b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7227c1f-2144-4f9b-af26-1693d01582c3.json and https://artists.proofprofile.net/proofs/artist/a7227c1f-2144-4f9b-af26-1693d01582c3.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 0xfa8137167b15b38e089549262596d81fa11c8e5c95474219d7604dd3581582f4. 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/USV351466783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e04c9b126858dc4845c60ef23ceb49848e6c642efb02c33325fcd07ef1fa293. 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/USV351466784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5e88df15cdd445c5604aa34a3c8e19474ece012b6f2401788dada29ba8c109. 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/USV351466785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7389ad1cd3cc1b3939d27506f31dc1ea3dd31808764b9327b452c9e8eaf0b47. 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/USV351466786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02e12cfc8ddb839ce8eb1a47809f5520ac0f16e607d35abd8173581f2f5b95a. 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/USV351466787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5dd6f667f7ccbeb215c165f4ef04c11efaad6276d639c222ce7cdfc155e091. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:22:05Z), 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/USV351466788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874b631bb3c9deed62d7944c414877cf724656e2dd54c87e1f0d2ff08cd40452. 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/USV351466789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e8086242dfbd815659d4d724881447a24a6823afbe18714ca275048f45fb3a. 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/USV351466790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358fc15003e875c1a9fd922f1e2aea0c559f0c15bbd3c9ec2898ae71cfc1a144. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USV351466791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670e308e872bd5d14916870b015b571cab5daf664f8e481a13a7fa0cc3d4ff42. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/USV351466792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97788b96508e0281b28c53889c58ea74397fcd7d602a048a11373e025bcb8d26. 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/USCGJ1660567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44231218c8493b289c27d8ab174c086bb25c5b2d336b7c1c6c65f39b5099ed0c. 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/USCGJ1660568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8013eee676bd08f65af4e9e03052e07432994af3216975108c7bd34a547bc12f. 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/USCGJ1660569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561baf6b2f5d5dd1461971b554e4494495b985e78e1b39dd0ed8a67a559bdd5b. 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/USCGJ1660570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83b22c6aa3ce989b5ae9ef824a391f61b471cf1142427f5d68c577fffa5a303. 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/USCGJ1660571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8bede148355252f82877c8b249c6dd3c9d8a680dddcc4c2df7d9e0f519716c. 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/USCGJ1660572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1584d2a23327089387a6e2b27d421f7ccd0dfd717dd6e648645bcc3d9edfcdf1. 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/QMFMG1497172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d85facea3cf4398646e4f2dd3c56af9ddcf4705c338fa6e39acd8d9f9b5f3f7. 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/QMFMG1497173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3bfec71d8fd3029791a1434af0571df6a674587be946afe1badfc7521321fe. 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/CA21O1000017.
INDUSTRIAL WASTE (HEAVY COIL MIX) - Plack Blague Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1142a897e4a1728ad6e8afa48d71076167867f17432e7381e46388d006c90866. 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/QZK6J2291345.
Selected Mannequin Records 2014 Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d85facea3cf4398646e4f2dd3c56af9ddcf4705c338fa6e39acd8d9f9b5f3f7. 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/QMFMG1497173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646ed64c18ea669e73037a707b46fead78592c8de76b05c6ee9ed7b53a98a8c0. 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/DEZ651209055.