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 0xf54e332b047ff22af2d54048fcf4aac5286c59f6d55d273210708fe194acb9a3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dccc6111-6d6b-4f0d-ab2f-8612f4c37ca5.json and https://artists.proofprofile.net/proofs/artist/dccc6111-6d6b-4f0d-ab2f-8612f4c37ca5.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 0xc404058e21c0b6106c9e252192d9722809a91f8a37aac3afc21a353ee4a40302. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:06:52Z), 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/ESA012517299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f08d40a03df67a73684eaec7dd5a796d0af148f8cf5ae29d0b03ddc45de19c7. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:54:20Z), 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/QZPYN2555413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7d04573b77a159d723dc368164be7d39f3fd9c6fc65d1fe125c8ac555878a3. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:05Z), 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/QZL5N2558807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153eb10c585a6b1e6b82092edf8e18e530b37d4d58c02354f9f3f6740c7f3d73. 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/QZL5N2558808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20acb9205d89e09f7e0c53ab2d5634c725fa729e8c80b6a830616280043b61ad. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-22T00:02:09Z), 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/QZL5N2558809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d61f65f7497e536937d2e5d1758942de6705e21de525b5de2cb5fdd6f71dfa9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:20:45Z), 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/QZL5N2558810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef811c2de58cb05b4bca242cc316d6a574b033066e00f6010f0d3dcc05d9b06. 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/QZL5N2558811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfc21659cd650d0a912ead863733000473022194cab0e9bd1f07c1e7c9f20c4. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:06:14Z), 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/QZL5N2558812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70efd68e7ae0b0db3181300aa658d56c6b805f164825faf9844b6f9ec7b55a3. 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/QZL5N2558813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04481e11d9d604829b98a69a88776d9aeb512bb5b87c378cfdc798acfe26b73a. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZL5N2558814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31521035f7add19d7662d405ed1dadd786593e72a1e8fe580b507d8e6cf0ef6. 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/QZL5N2559562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a31fdab646e7449a522d3f08e1d7ac9858160b1427685df8efb0ae568cbd84f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZL5N2559563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9436c0fe2072a8312eb27b38a9a93491a6f071e8836c05be1c6ecd787c005432. 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/QZMEM2556434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7abd3756edd23ea01644dc20788ec18acc6c8f6235558d2e83bc2be30aab1c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZMEN2515631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9e57ad5d93dfd2f50bb2f9d943699e2a8bbc25059874a680f7f7de5d56d98d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZMEN2515632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ea108ee159cff56c4c922b986365c9ea3b08c1ebc421e1f27d302faa2fc97b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZMEN2515633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03acdc6b0c73c4c144d5edb3e6aec8c85ef17bedd694b57765601a2c4b72c61. 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/QZMEN2515634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385086173cd93e3d5b28a9227673e69aed20f03797d7866d2ec7e28bb505dba4. 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/QZMEN2515635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e12c079c2626f28214130301f0037c3e2ab8fd8024fa3d3aed45f335fab9ec4. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZMEQ2507770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716b21d156d0eeb5cda8a3dfba7199a2b885ed49f8c7b51eb3444c782ebb09f6. 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/QZMER2537641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cbaab0c39ea7b8fc2a06a6246f8f7e7f795cb5348486a34a20ea2a5e54f116. 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/BC6M22511194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1119fa93be49986e04fd1a61c28785df06f023ecb57e411d7c419e093939e17a. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:45:49Z), 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/QZL5N2567568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1f8b658b76f00f16152c7cbb5f560ca1f8fd7279235e8a44311ec6c5051770. 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/QZL5N2567570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd11c4bb9e488740f44db81a0fa82a01ba1b631cdb2ba712c03493d77a07c8df. 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/QZWFN2596256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523e8a9ca5ad8698625accc8173c9d02f4d2bf65a52b96b565b72f2d4260d4c3. 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/QZWFN2596257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f68b6d284437136443ef6e87b0f2f3c3a4595e09a44f70df92e002b6c7e3594. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZWFN2596258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093f652c46d550f50620a048945373c1fe1d43ce7d6b4714d08b74aa7c8eed3d. 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/QZWFR2551899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f790236b3af31ff87c72b83e19125feb7af368092581cbb8cd62cea1e0fdc9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:07Z), 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/QZWFR2551900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0c893318c9e8c70fb117748c7fd42794335f1183d2d22205e86536b8d44c90. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFR2551901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683c2fe4392af64883a16e80ddf24f93a2646d4ece27261cc3ecee68d4b6eefd. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZWFR2551902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fafcb25bbeb57607e30c0e1e055945f1f31c41b242660511295a697cf581ad. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWFR2551903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200281101111e0e2267c9c987d66a478c98e6811c59db7597344a609905ae9ac. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZWFR2551904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d104c2384cc1da7ed3e273b579c34cb34f1ec8406fff346a57a3a82b9f7404. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZWFR2551905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f58f1478d63aa64e2e888423e40d41002e0ea6821579f118f06020a2d1f2758. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZWFR2551906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34157b1bba6505a9af718e16961c94669f805c03dd9af560877361c4b316a543. 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/QZWFR2551907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f49139e538ca8836b17e7acc53293a4873db33765b6a379b6d4386c1a2a4bf8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZWFR2551908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8216bbbcc8958f153bcf3af859aba991d47bcdb4902168301c82d746412902cf. 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/QZWFV2554254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a68298efc9c4489483bad3c9336e8c1d0e7b9ba4a132a3c137aa5dd1ff43c3. 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/QZWFV2556959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd88fa17a37512f6c07f2aa03ae661dde94785b2b6a72c0e55aeb73153b4a5d9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:38Z), 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/QZWFV2556960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795a0b57b2818296065edc70ceee5eddfe098562bc1249b10bbae460d8f0b105. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:01:35Z), 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/QZWFV2556961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c129ca611fa188ea8c253fd011cc42a06b651cca865f29335252d95c8016d93. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZWFV2556962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa282c5a7b6385d8f90b93b1986b22212a0126767e7ce9430e5a07d61cfdd5131. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFV2556963.