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 0x8527ce99fc5a70451e26ebb59539f4e3012ca19c5c2a73cd3e181f2b13d2acec. 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/63f9c423-6d71-4692-83a2-03630288ed26.json and https://artists.proofprofile.net/proofs/artist/63f9c423-6d71-4692-83a2-03630288ed26.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 0x1540bc076364e93043d73149316c7f80778476411b02b59cd6e5fd89e4f70b75. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BRAPI0001140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4c5c1a8811c8110b093b688f87814802732ee5efd7f01c9ad1d445246f7c9f. 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/BRAPI0001142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dd02e3de134061492f87b0acfae11e10987d85f49c689979acc90d1fc08d85. 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/BRAPI0001145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245f33c6fe7ce0bfa9e281bfaee2ff329a744f92278a2ea8b7361fcee311df8b. 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/BRAPI0001147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3773fc97873b390c619d1cdd123688211361d31c53cef0544996738d3ee6526. 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/BRAPI0001148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56a156ea7b2b72e893ff092c00e8770d55e6d59a4e876534f6ff04585fded36. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BRAPI0001149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44b1fca2130e6c6e9a45db4b8e7baa23513e357b284a0cd6242eaa080023e5e. 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/BRAPI9900270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffaddc2a80da17d29878599984d2c75eaeeff8afcbd9fedf26f6cd968ef39d9. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/BRRVN0500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d19a2af80eb1178778752a4c9caebc81643cde443c9cd2f669d53bcb95af7d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRRVN0500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef5bd7e5d8c425a4a5dd38f777d8406a78979b9926f61fae46716e9fa186d76. 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/BRRVN0500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf35ab39bf52cf9bbe0afbea9acc1dd6158d7ceb5fa7a1552e77c397969dc1fb. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BRRVN0600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a1eb5a82a45ce92baafdbe721fda84a71e8df89c196366272b3e5a4898d96e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:56:12Z), 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/BRRVN0600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad8980c0000fbe0755a83f8bcde6f06edfadcc21b99cd6f3c815d62297684d6. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/BRRVN0600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4151f688e4cf9739612d56db1af449c0f6f4aa5d68846fff45148b3609987940. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:01:26Z), 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/QZ5AB1622247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa7068e0d09fe788a8eebd5fe47d884a368f3991d8590a38b185f41cf530fe0. 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/QZ5AB1622248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a50547fd6ae124dc75d5f87949c2ee470769f57efcdfa192c30f827d81082ea. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:09Z), 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/QZ5AB1622250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a3a88c85a3ecbb253175f37ae7b9a8fb87c05f0aa7bae4307715c4054a0cdd. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZ5AB1622251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15bfbb337c4630421ff3d2d2c0517bb6638b56b38426d619377fef63977d8e1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZ5AB1622252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7faf7f859366e1d5e63db000f7b7565af209412b38b87f1ceab6f5ec6e9332b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:23:30Z), 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/QZ5AB1622254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bc1511a7ab4b67306a7a038b0bc33b87f5315ab1c134ed92ce1cb9204a9560. 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/QZ5AB1622257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c34b88a7bad141de34be2530b6e19a3e3b773e38c09c9c821cd8584bb2d8ab3. 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/QZ5AB1622259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced11f555ddfa85d7b77f0203d48670ef2310c12180ff0bfee4e41bf83a8b50c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/BRPVB0700174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4b316ca7f1cc523599e0d7c28d6f4c3930c9a7ae3c3417c255a7ee43b84b41. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:17:23Z), 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/BRPVB0700175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e220b4e00351de6f01274139efe83ebdf3db713af9842a14fea6cf713251ca. 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/BRPVB0700176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bc4467c3a7ef0ae66af9876eb326ef64feb090743512e1ab189a64632c787e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BRPVB0700177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c167dd8eb5438b127f6756daa863de37ed8c3ff9baa5f6882b4b66d31f9cf6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRPVB0700179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ebd4b0e8d8d17b49d818449bb9784074c090bf825b3b55b370dac7e021e504. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/BRPVB0700173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e220b4e00351de6f01274139efe83ebdf3db713af9842a14fea6cf713251ca. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/BRPVB0700176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bc4467c3a7ef0ae66af9876eb326ef64feb090743512e1ab189a64632c787e. 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/BRPVB0700177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b674fb90f0bbf08741e161970f8cfba7171af440853de45990f1df343e84f97. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/BR9BY1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedd783664affcfb3c0171a2ef646be3fba21816e3266e37b64d09b059c717a3. 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/BR9BY1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b74ad3b0912784308e39b25068e0d09af9dad6132c713bf2c37f0ce01921a74. 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/BRPVB0700159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86a4b79dd1462cb1e4e493a89e0680c49d79a00afd8a3ed50e116e0ab769672. 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/TCAGH2208313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa443f5889ff268c6964e0e3b02c2421dd4cd6ddd4f308b433e809b7ebcb43a08. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BR9NO1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fca01c9265f56c81729743e178e10040be29a4f50363e51f67f5cadc31811c8. 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/BRRVN0500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879204d3a5a7e57a4dacfcb71bd561dc3ff881e3c9f005bca141b4fa22187a00. 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/QZHZ32009062.