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 0x7d6efd71c367ef6192ef8400bae95d70b130ff90feab293b33a46bde2d575fc6. 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/798c32d7-81d3-41e4-b83c-9ee02c4f10f5.json and https://artists.proofprofile.net/proofs/artist/798c32d7-81d3-41e4-b83c-9ee02c4f10f5.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 0x7797d387e932b6b13ab079658336bcc22619f6fa85f3708739d543cbced837a2. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/CZA232301627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0e5ad2bc76073ba35054b8cee6cbcd5cf51756225ddf369741770652f2537f. 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/CZA232301628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7701df66383955373dc527ea483fbc88002c27dba057519e56b4ea98c788c6f. 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/CZA232301629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffffcf86498f248b97a4a41ffa7246faa41a5fe5b639a3a54c6f6c66e3df355. 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/CZA232301630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda253e334308d37560fdca8f6051735cc1edf8851bda571d95d43620e692713. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CZA232301634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bef3b118e940241cad5002d0c0d2ec07ac18ee9abd64382f4216b0ae54c7a5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CZA232301640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe465e22bc8da1233b86af3a0e6e21bb8030c9c95868efda73cb364b26b519731. 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/USHM21738557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9d0a0fba4e1d4bf72329bc7cc1242fe60855b1350d90ca3c1fdd9b0282e1e8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USHM21738558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59fca756dcee929b5aa0a413200e54e3e1f55ec721c26ebbc3895051cd73eae. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM21738560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32404bd4ead343561781a607c82f36c0c79a622dbb0ed5fbeac0d76a14377d4f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USHM21738562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fee681b0936da3b90831c5194f2c229458de8a7aec9d455feaa630cfa58c459. 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/USHM21738564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30e3a1485fc32378ced04d5be0b7b1f1a1c7034c08da531c6ab327ea5482e30. 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/USHM21738566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4065d5671d561ae2eb337b9033c19866ad4156f975b8e4e47847a3b9e265fc3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM21738568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0a02bd4e2426c03a103f8099d197dad60794595235075745969bdb96c47059. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USHM21738570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b568114ea965bad64bb240435b33d1f92ed0840cba67266271a348834f7f8a. 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/USHM21738571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37045f1cdc406ac9ca21c79a441194897c4abcc1ec125b3f2e20ba3a11f8af18. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM21738573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfa511ccfdcd5abdabc176d7efcd58b8e3bdf01e95109e271f0803a86c91bef. 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/USCGJ1925396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01731f0315f47c680d4b44ac98b479c95efb1e656b14b445aa738aaa4cfba634. 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/USDY41945227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6f4ec7f26e4b3a3e47999b521ec65e262e1920e313c2442c2b2924fa964d60. 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/USL4Q1952157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217f9dbb2a5633476ad82045f8ef4732f1ad86afa6f8f8c9b8ea4bf94d73e4fb. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USHM22329757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25da6f75f6b99ab32a836c9495f68109a9e64b6bfa3c613b6bf4c5f5d20196e8. 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/USHM22329758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58983faba692eee94c90465ec266af3effb7a3dfaecfdf64bbcb110809c8fbc0. 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/USHM22329763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a31a1f4a5b0f02ccdca6d6b2c7b316971371ffcc743f095c0f246d4de62b30. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:21Z), 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/USHM22329765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bd68c93f6ee9de7ad36cc398067a9e85c67b6de91d63e0a05ede80ec91ef26. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USHM22329770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfa190c3427671d4ae844889b89d2eab252d21d8a980c800fd4597a9da3c815. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USHM22329771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f4eff2a785b0fa3851f26e4611197dc2ee9318f99056980e26dc4d27d6836b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM22329772.