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 0xe2654c08c889c3ecd28849a6489930939c8d4712647844a2297736892ed29920. 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/0caec72b-6e4f-478a-8ee1-fb3796326299.json and https://artists.proofprofile.net/proofs/artist/0caec72b-6e4f-478a-8ee1-fb3796326299.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 0xda3783b3a5d61bd4e4d756c829f0558d040c854a7813567a932b1864bcbf9132. 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/BCPRM2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335053e1d8d16449b8a9d72114d68c49bb484aa4ba639416273440b9e9630081. 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/BRXRM2200001.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273dcfbf4f94bb28df55ebdde4c589bf442b049742081ffbcfebc6e068c16760. 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/BCPRM2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45ac0d53ccfb8e1e1ae470c7ffea6cb823811bd389c16f8cca5354c0da17a57. 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/BCPRM2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110e3d2e6c196545b014bb66ebd8a4a404bdd6c02afb7a847662dc1d4a98021f. 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/BCPRM2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c857710410a7986450c945ebcb2cd836af2d99e3d2b6eebaed4f4e7b1335c4. 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/BCPRM2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171056444b1cd617ee03ae8eb2b2ae7011b6f2953869eea4aa96f9c1aca5a454. 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/BCPRM2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3783b3a5d61bd4e4d756c829f0558d040c854a7813567a932b1864bcbf9132. 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/BCPRM2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74412d13add9348a3eff31d5dbaf2ded1b408e4e65e5ed9e80bb6bb2795e9650. 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/BCPRM2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62598f1760a3d7283a3613ddfae745598d00d66e14be59aea4f350a1bb328c1. 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/BCPRM2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a371bcbcb040145613b8e9b1e89cd898c7453ea72dd5d90648bb59cd4fed1b5. 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/BRNDL2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364b760348f0250f51e0c712b056b915a47a10f6c51e885b3a82cd73b8ffb7f9. 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/US7VG1517847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b868e004e6c77cbc4f250888f846383ccf8eb87cd62db7736a361f11c4f44d8. 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/BRNDL1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a411c9fc96ee5c94ab951235a1d865d383e3a2d58803bdcfd561f5926348bb9. 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/BR6AH1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f5668a6f623db82980142a6f979376f2aa7f56585926b71966b21ec5971809. 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/BR6AH1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6192c48e5091bb33344a343f436a6a438db274b02b7c28dbe24ad1115e0d40f5. 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/BR6AH1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c0e395938d6e1461a196597e38576554c269ea2fc7ddb1c4b9525c4c684b14. 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/BR6AH1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694d4afc93f48daeaf62228ba09e6cc496899c3beac3dede1d3c2f366aae692d. 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/BR6AH1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb744418a4014261f80e0deacbbd08bcede86aa553ed096482882cc192d8eb721. 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/BR6AH1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb605d12f23fd067b93d13e59af81a8b345c967ad49f6bebc8e966b7cead8a56e. 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/BR6AH1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3433b7232a3ce36521797ce6e30b75c1174aa07eb0b5a52e868ded0e66b9a0. 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/BR6AH1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2179b8b6e5a4aed307ccb2d4f3946147de9e54c376f5c80f8f5f024751221ed1. 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/BR6AH1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237313e1fe96f9976c3623c7937612c7b00ce03704ae1ae24e249575ddcf0098. 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/BR6AH1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c36ad0952946a6dd6b4566efe0b0bd874dabe7c9dd49c348838ec1944e0d91. 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/BR6AH1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03144b10206ffa4d4b7f2344e883dfceb9e86ac0d4180eebbab0ebeef784c2b4. 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/BR6AH1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f6a37c294f6609109b3feb14cdb45c77e368dd6e5958f29809c812da02eaa4. 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/BR6AH1600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f6a37c294f6609109b3feb14cdb45c77e368dd6e5958f29809c812da02eaa4. 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/BR6AH1600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a411c9fc96ee5c94ab951235a1d865d383e3a2d58803bdcfd561f5926348bb9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BR6AH1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6192c48e5091bb33344a343f436a6a438db274b02b7c28dbe24ad1115e0d40f5. 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/BR6AH1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3433b7232a3ce36521797ce6e30b75c1174aa07eb0b5a52e868ded0e66b9a0. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/BR6AH1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f5668a6f623db82980142a6f979376f2aa7f56585926b71966b21ec5971809. 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/BR6AH1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c0e395938d6e1461a196597e38576554c269ea2fc7ddb1c4b9525c4c684b14. 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/BR6AH1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f53685cf23946ea98201e86c474fb1bb126308f090089847d9542d463e76c4a. 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/BR03D2402007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb605d12f23fd067b93d13e59af81a8b345c967ad49f6bebc8e966b7cead8a56e. 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/BR6AH1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee91be58ba5ada47a8cbdcca1bc65dd07070ef66bdcd9332f5993048b6d874. 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/BR03D2402008.