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 0x2906e3392537ad36a91b446936ee1802adb9561c8da7f689dba9bc201acb762c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c5ce32c-515b-40fa-be24-021043da95a6.json and https://artists.proofprofile.net/proofs/artist/7c5ce32c-515b-40fa-be24-021043da95a6.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 0x66a99d0b1964e6136ef7bdd02f510bfb4e0991c44a0568f8bd89650a27cecf10. 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/GBJX31960042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5352bc37cbc47124d78848120b5019f31b90d28133387ffd7e620a08db3e41. 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/GBKQU2387779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbcb051e2d60cd15955e07f87e7be6233e158b1b930f451d87ae2ca4209a1d2. 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/GBKQU2387781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaedd28dfaa209096ad1e251ee097dd054577475ceb89a235a7eafc1fda17359. 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/GBKQU2387782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1ccc88120ff4f3094d52b200d80582148dadd763a361fc731457979c0b2304. 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/GBKQU2387783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e559b0703c6d76094addb0c73af9c6303d4db1230979ec44f5ef60536095b7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU2387784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cb76987914424e57d6575d6cae88fc3b939d33cba803ed4530c8fa2d122c84. 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/GBKQU2387786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dc708a8f2de6d2c66735cc9b5747a6e040215c4111504b4b647dc8097e4620. 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/GBKQU2494161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a002918329e5f6d8e5499aa95c72e55d2b4c9383c0fe780b9498955852bf25. 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/GBKQU2494162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535a14dcd0a1601835577120f7036017dcfd68493a0eaa6ae9b043ac7b10f276. 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/GBKQU1984424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa838ee8bde7e1bdf9dacb4018a7590c4fa6f5a8bb0472c918165cf79adee91d1. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/GBKQU1984426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c3322b89cfc4dbf5c7cff4c402f8e7aba3a96ba1999b4e4ca94898ef610307. 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/GBKQU1999459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c78ce293e0da22db9b4837ae96299c062f5831b08992bfa67f3f3a1be0a49b5. 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/GBKQU2047100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448076f78c5e99c6c3f00516cb97a069cc381f0b1cbf73ad9c3a922279274f31. 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/CA5KR2038899.
Sounds of Life: Tech House Collection, Vol. 63
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cde0358bd8fca452b9864b4afe51b697a530c9e15f2d6c7091569fbec66f23c. 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/GBLV62408956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46e7daa702677db438fac31bf1c0169080e5d488d95a818fce530f890047e1e. 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/GBLV62408957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c44c6156de3e11d77f0cc7b9fe79020caec6fb52558ed02351bd038a7596f78. 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/GBKQU2526438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9e2c88f9deacab61af9210193623ddaab4d6a21ab04205eedb494597919039. 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/GBLV62403267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c847e9c61d6a191eb9d19d6a1c0e8eef835108006aa6b31f0f695e842342a8. 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/GBLV62403268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fb23edcbce92da1a5b4c2341b91f174575794e48a2b452d4131480c2ecf47e. 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/GBLV62309255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df8385f3d122073ddc4de9234628a533d6ea6937d501b69af50621be70e20ce. 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/GBJX33720227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5d7a4dbe9e5b46bead8ab6c6156e6c9c3a3f4d6c0d08318ba259de81790a57. 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/GBJX33720228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaedd28dfaa209096ad1e251ee097dd054577475ceb89a235a7eafc1fda17359. 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/GBKQU2387782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca569847ef3fe8973b2ce156cb78ce51039150e84e60103afb464e8c1cb4991. 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/GBKQU2384178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e7911fb7f65696e13a8f1363c0e28a69d19b860e701dc3745d24e47e749962. 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/GBKQU2384179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1daf478dd56570794db685e12fdd2e4c7b9256020d143018af84988c3279987. 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/GBJX32152516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cf7d6f01b4f61bc3dee29e16e368948b78bd266e1425635099ccbb82808b2d. 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/GBJX32152517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b961d44b9483ea6668fe4241ee497316313239ca0492ed1b9565a115f2a8401. 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/GBJX32152518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68af7d68f1bfe8a2018579ef5cc8c07e24875191f4e42bcbeb8fd8a6d87149ed. 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/GBKQU2194126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73827b11a0e84ec5b2fc5957f84b639197678d4f87e0f5e32d9c6086ecd1f07. 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/GBJX32160001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a40b38c8c09145b093be32b8ca810833b7e15579ac9cb0e3564833fe6d4e76. 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/GBJX32160002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b2ed59fb741809cdd67494d5a41897224ba441d52cc660c98c6c83246e15db. 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/UKFDK0030083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3da9510e9a3e0ab5e1bf4b4502d86430f61e8492db3852fd4595e0f6a7b20ed. 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/GBKQU2530467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fee87f5919755bddd6356aa33af066f1f8ee4287c78150aa5fab4b603e690e. 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/GBKQU2455881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442b9a6686246c64241d7c4faecdccdbcb22a79c406c478110cf7371b7c63965. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKQU2455882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e8128c42a294858e692f5fe4eefe67fc78e35b77eddc94340b71957e7a06a6. 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/GBKQU2455883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c56d5af8700ba3cb72e6be099a0ba0cfa3a9b7f4d16f7ec6c88ce0fd893b61. 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/GBKQU2455885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6274d3314a0923236216658d8837f28c9fe6efb6c131c9c275b557e183bdb0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU2088856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d94c6cd8c25a5f37423252df6c804012f56bf435af96cda8a63f363648f2d07. 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/GBLV62028917.