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 0x654dedb579acdabf5fd5af299704557952aabb17d1cfba2a65fe42ca6c24e4df. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91d4b6b8-3559-40b8-809e-3ad4baa58a41.json and https://artists.proofprofile.net/proofs/artist/91d4b6b8-3559-40b8-809e-3ad4baa58a41.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 0x6bf0650af6f1cb674714a2204836323cde1560a821a9a75a6a8907103418cd05. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USCGH2115157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dc08f601818f4d0d1d210ee33e2131a7e4f39190e1b0cc7be7235a3ecc169d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:38:41Z), 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/USCGH2115159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b19299459aab1cf840e88364a54fe16b7ed8372358eee5caa7054290c663b61. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGH2115161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e65d528769130e941b3df4518b0230580f3a99f3b9c0855d91ff89479cefe3a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGH2056819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ca04305f47a3334bd7104c0f8f2b8819b3bc70782f31e546238de6396d4e00. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGH2056820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37beb9f20f9588630269f46234938292eb3c19c70c2c22edd7d808fc21bf03a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGH2056821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d497958ff804e564e26c50fc29e768afe50af552196fa277d012d047acddd9. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USCGH2056822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248ec3adf024a705fcbc38ec5fe34cffc2f099f3ea63135225cd6368ca147f13. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USCGH2056824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8232dc3c2402599cd9163229d386faa18d67a9de0e1325ceeed8083cc76c662. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGH2056825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b7e84a01c41dbf92f3bf5dc3a2526274a04c59dbe9cd38bb5d568034d9581b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCGH2056827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb452e1b9a79b34442240731678fb21cee400561bedc5a6589293938a1cd1e68. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USCGH2056828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c26518096431ec8d96fcb7f3f711f61a83e7fbed1c26d85fc41b8e05ad03529. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USCGH2056829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7809354d71f2756030ed16c84e9625ebb369fb93ae7e0d1874aaac758bd630. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM82119711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4162d7d4dc84cb342d9189e7ef2436d555cd1453ce31d69917602ec489eb569a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGJ2281821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac246f422fb33a99961f53f93dbf9d954bb0e53472e0ada4ea2db788cedb34e. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USDY42237903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967a9c97b1d01f2013840a5e84ebe884144580618dd799c3849b21d6cae1673f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:26:48Z), 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/USHM22276746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aafce7ccbfab26db0dfa46552c19073bcc6ad7cb168d737e833ac08f1735c7a. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:52:56Z), 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/USCGJ2368501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440c26145575e6e36a074f86e0d488be7294578943f18f398855f0e792591353. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:44:54Z), 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/USHM22307686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b9e72dd4ec755304e9888468ac14266cec28a3b1daf8e7fce9448a303616af. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:40:48Z), 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/USL4Q2316645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daa25715b5adc1974206b5c88935de7f6a0d54fd1ca38c4d63e4356566c9093. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USX9P2300764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739a362f945b02a7f3bd51591b5d00a0907ee315ffd196b6af8bd14f7c0d6fe4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USX9P2300765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb363070d3e5e4200bb8643c387ba4c75a2ad1a0b7fe79aebd6fba86fc1006cb8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USX9P2300766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc469415c6588a3aa23363d337155149f914be8216d43bd2c4dacf1b442870c13. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:01Z), 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/USX9P2300767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cf372486847908ef02f08834c91bb09994235f45bfeefeb50d77cba541bd1b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USX9P2300768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb8c32ee7fefa6d50d0524d67e94950dc5183a8c98e682cd27b4218059cd787. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USX9P2300769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd106cf3adf6b072907d1ba194b8ccbe7737aaaa632d562471e86a4c6dd98dc7b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USX9P2300771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0000a711abede726b7aed8fad4c1300aab93effddb2e85b04fa235fddbb315e9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:25:21Z), 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/USX9P2300772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d43ceccd18c593c995070cfd4e97e9006af03afc629b9edcf741cbe1af3dbc. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USX9P2300773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95643dce6ef90f540388d2c6026b76a5b939d7a302a7e56faba9ff9d8a1c2c66. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USX9P2300774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c409cc70b1f487acf2895a367aa7793a4d8ad9f9c9334f82132d1f0a70c6932. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USX9P2300775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701713e936f0b457f39310806ebb3676485d395ccc07443a6c0d36adff2a5e41. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USX9P2300776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d804a09d4999203a77213ee755acdf6221b74e3f704d532b86160634cb3aca4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/IT4UC2400127.