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 0x7c5e5ef40b3b5d145f724269c896e39e0aaecd8ac15fb3560bc253478fc1098e. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ade268a-3c3c-4987-9308-9f9ced6e699e.json and https://artists.proofprofile.net/proofs/artist/0ade268a-3c3c-4987-9308-9f9ced6e699e.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 0x90515ef0817ac22fc461047f850670d42e24173dcf5ea95d17b7eae627d3de1e. 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/PL98H2304008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa328b5148f1c14b05305774f73e86cde6b6a2132378057fb295318a63d23777. 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/DEBL60380770.
Be Free with Your Love - Opolopo Dub Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0ce1673cb113ee709806e9b6716c4eacbe3010b2d4c553ce2760794b184140. 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/DEBL60380771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d1e19ff9c900a4f4fed509c0ad2578ca1cbc25cf121bf61cca7673e3aa749e. 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/DEBL60380773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2350a9ebef448767b33e13b3e31780daa177f36be882dfc9f458e5c0660c4b. 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/DEBL60380779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5849e0d8b3c87b6f305946f7d87b397dacf19309de097b8d46f49f0b3e2c5e. 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/DEBL60380780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde06c02ea75d0fd04d6e64ca03fbd477c999049adf749b0af996de08855a8222. 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/PLI365640040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbde24876142d02915ec7b98fa4afda7bd6fe248d6f59f860dace6c65ec94b9. 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/PLI365640060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1766f0394465168aa1fd9125991bb3df41c0da5deef269e392269f9eda82efd8. 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/PLI365640070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a455c8d7167e94e6e8d1931f0f14bb18abf60a1729def949f25aab6d151dd4. 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/PLI365640080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d643e5934bd71726e6daa18705c492c315958b10163dee67cbd640c5f66a3ae. 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/PLE951201271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db7e6a003040d21e14e8293d749be6fb4c190361eec0bffb599027ebbcce7fa. 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/PLI861300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefecc01d5675117ee68a60ef86ec7d38049302c8360d10130b7d4cd3e17ee354. 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/PL6E22400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b4209107194b508913b2061da0363172c6ebc42d2db9892e5ab8ddd4952b1c. 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/PL98H2202002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecc1c0f149bdedd7c2eac72b13ed356fcc15a1d752dfc0a9afa073ec07ab67b. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/PLB382000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310f252814a50aad688e5f9d66936148d3cefb58a437d079c480c884290baa4b. 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/PLB382000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0495b081f804a78c59467826beeeeac7a7b7587520f5810ba820f61736c149ba. 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/PLB382000008.
Góra Dół Góra Dół (feat. schafter & Pezet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b7edfcc0219db53dd06363920991ded06d0740ba298cd108141a78f8cfbad4. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/PLB382000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc9e3f209ab7a2c7ec6bdb0ac30381fc09f6e2cf0bdce85861086e9d537b032. 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/PLB382000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5c2fd3c924b9028102dd4655f0c0533ae825f53652e5e94d9fb5270de4ea7a. 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/PLB382000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5df7b48dde96f43cfe8fc0176255e5298549d84f91c060fc59bd98cbe7b7413. 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/PLB382000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e0a6d7fa5f0f2617efc77e6da67b3d1b6895151f023ced1395378820729ab7. 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/PLB382000131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6798b37e4f23281b78fe352841770026982d14df115569ff221ac9d0a1dfd9ba. 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/PLB382100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202b7be72dda0fe79bf38fbb21e22dea9a0df2587dc0a2465c1fe97525c569a5. 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/PLB382100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b4209107194b508913b2061da0363172c6ebc42d2db9892e5ab8ddd4952b1c. 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/PL98H2202002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f24989b8d14fb41146332708f5e674cff60733b87a7dbeea8826c02f6c9f24. 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/PL98H2103001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faaeba344e1b60ccd959efc4d42225aa6763aeb561bafb509e26678251ffcf1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/PL98H2202009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea3711aa5ac78006950c59683f13ff6ea9ab879cc42e34a54593c648c7f7969. 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/PL98H2202012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cc828d2ac36329fe3a7dc41f9e4c79808d993d34254ab00ffbe72780aef55a. 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/PLY361700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a4468a277e95e67b1337594cf56e7314186e00b332b87fec6462ee7ca77e05. 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/PLY361700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7ee0812559f5ada870de394d3161139c7a751bbdc7fe1db32b04e7adb014ab. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/PLY361700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0b2cf7be87826adf1f8ce4ce2d09bc05c520f152053967b305ae920fb5e871. 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/PLY361700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1464b4b2f4f363abc68f8d806b52e886fe6a6998b876c0413ab12740e17d6d. 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/PLC591700121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf382b3d10765480aa34178dc183583133c0842595b4dee0949abbcb43485b233. 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/PLC591700316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82b00bb7dc61af9c99bd70fba7d2f4867826e6eb24fefb04757f36ac18d7c72. 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/PLC591700317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78f44e6e6cf6d143e27f3cfa0f9e0e8efab921ba9cee3c305cc9d10ca2b3fdd. 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/DEAR41413289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc650f46b6853eced7961716b96f2856ea9759da7ea4d24d6e59bea91d5acd14f. 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/PLI862100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e000e15f1c80937b94a62814f02ab65ed5734bd6b14671441cc53790697874e. 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/GBEQT1500300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5686302680027f744210be87b06d60f31c0740499ceadb4d96f86bd616a8e2a2. 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/PL94U2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02bcb2a5f577a619acb0fe01127e94632747a04442c1d717da200eb41e57a41. 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/PL94U2300004.