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 0xeab3e4556e7f8060818b9adca3c4eecec437f8e4a96ca4f86fa008f0b279dbb0. 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/f03885a8-96da-4b73-a1a1-5fe7efbb34b4.json and https://artists.proofprofile.net/proofs/artist/f03885a8-96da-4b73-a1a1-5fe7efbb34b4.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 0x375b85f8c8cf66b30dfb645dac80f8dcfbf1b55536d084057cd38da9eb85a5d3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:46:42Z), 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/FR96X1741099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e30f6bff38c3cce37c1bc655aff9a1d9bfb19239323ee13ff13d9e9c651459a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR96X1741084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f544a45fc65246af944161267948601be5f4e6925b81b6a1b060fb9e434303. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FR96X1741088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f71f6c1de1a93a68481e08051c9f495e2034fedd167ffc23815dfabd0a650d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR96X1741081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d171645983af497386e161a2a5f8703b5fc564467f87484669232ea125279f. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FR96X1734656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7562d8e4ea883ec8616f3b2d1f23a4105eb3ef472f763506010275aaaa4a4afd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR96X1734657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cd83fffb357768015e4d451576d1c4e83ce306473d7a5bd2f120e22755b968. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:32:53Z), 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/FR2X41976928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2d8ef32e178626cfcdb033b5a4431463616aaead02e0c46190f5c91ebf6e7a. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/FR2X41976931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f632176fc9d1aeb11abe137b6c8846c63ab475ec0f73f9c96034396ba4802d6. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/FR96X1943718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a00cd53f0441bba69d9972302087b698fd573061ff22b1984880d0c4e7d4d34. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FRX281986731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb761db2dc608c99e674fd5e6641cf577493ec52b05df685d4f15efa0eaaf03d7. 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/FRX452025893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ca2142fa3c1ecea6a4eebf33531b215096ccadcb31c11daae582d46991c3d9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR2X42060994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4facbaceb9f6e8d0ec7bcba3468092b2efa417c55e22c0400b4bcaf30d3012. 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/FRX202094263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c97bbb6ca1c9565eb3ac31cde832d773cc2e942a6799f62383584f0059a9fd. 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/FR26V2045091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d544721d4a46d93c022c34cf58a8a8183e6e0ee8eaabd1815453e8c498f79f8. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/FR26V2045093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193170aad305f67be43b32c3b87e700c148929f08c09945a15519a8ba5805548. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRS182114803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb46a334b2a4d31f8b64a329c1a25d697c7923657492e7666707f6cabcc7fe2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX762246783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb584448bd124193905b95068b4443560ae9b2e51b5707ec90071ddeee5efb226. 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/DGA062288816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec6f3c24fe4942fcd9c2d46cee08c3c6e45ee341196bcba1aa069bc636c0c27. 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/DGA072237158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e0584e1fbe041b3269f8fcdfe8ed7b154e10d286b64453daad08de7ef1164e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FRX452361688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50770c3187e7ae33e7405b64d9126a622be897276b67987875700b5c93217bf7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX872377049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e82d0a93c88786ee749f580f574f141e26227ae720493e5d9f445a5ed07bdd. 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/DGA052376891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6918cad4ba47c8e2b82b71ff07227a7eb271d4eda317b496e87d4072c6514de4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR10S2469288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149067b3d045c914adcadf5332d9abbd755fcab8444c6d49825cc3d26d52ab8c. 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/FR59R2458332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6646e0ec64d9bb936eced816988b6e3a208faf9caa797633d0fe4ddd5ffee41f. 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/FRX872448056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb6f5ac4a80a5ef4a48328709f655b82434216691b024097c6713af1db002e3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DGA072477554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cafca7982c96a462dac5b8e92a46797d39c7bb2bbcd346eb21cf845190e1a9. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/FRX202578541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8aaff7b1f8efc3d0928beaeaf8bdc4815679ce2676f6090a72e0a689058e4b. 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/FR26V2032153.