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 0x900d60e193c68f11b937c994ddc8a200a5ae8af3d50562dd2b71f477b5327dc4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8db1adf9-fb92-45ee-8dbb-5e2af05f6d58.json and https://artists.proofprofile.net/proofs/artist/8db1adf9-fb92-45ee-8dbb-5e2af05f6d58.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 0x47490b9b56ac048669184ea8ded95763ffdd8fca4388715048cd3b7f926356c3. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/DEZ900800559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6eb29dbf0ba2531ea2c60fb0db1c870eaae655f2718978fd4a260952f568070. 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/DEZ900800516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac8a27c1a0c569edeca6f14ec055a5a31b95bdfb9eee1321d5ffa6706f86e86. 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/DEZ900800466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d08e1d75d6b7bf554dd13c815ce103ab222fd74787ee11f11c17d8b574644b. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/DEZ901200782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe74f06efff0eddf8a90c34fece91d42fcb1a6aa4a5c131a2263434772408a3. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/DEZ901200787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a92f22f728430c33c00717253cc9fb99560fb8a858941faffeac42c1a85354e. 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/DEZ901300680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18758a3f42a78b7c12cf05e15889a1b1109fd7944dc1da92ae8271b9112407f8. 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/DEZ901300678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9971118da9b8cff567bd1f5950df8860c311772f1c656f84575ed850f6b108e1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZ900900433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15f82d2635569d64f304b30d1d30194449cb9f8be54e403ebdc01f644277987. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ900800485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9971f341572d640de6d090763b758bd37be4599acf20951d7ea4df8e782d59dd. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:59:41Z), 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/DEZ901500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866e153ac8ba7e2d866bb07376fcbd04ec9cd3276440c4eac483bbe2e96c8edb. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/DEZ901500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ebb2ce207413ec8a15797e48ee386009faed130999434267791d1ce2f6bec4. 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/DEZ901500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f54c98cfcd6a37a139343f20c32f6f3e2ca5b2583f18fc8b10d6e8c27221bbd. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DEZ901801267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a7ade33acfddf2f05e43d411f4b6aa210534e958df1fdf0b61aab26201163e. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/DEZ901801268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3ba7577fedc467b79e0f3bfbb4678728c2b714b7353e4efc7b73e27549eedd. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:50:14Z), 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/DEZ901801270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b901e19790a7572dee74d6a6402f5a4e37726d01756c007286eb924b438b06a. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEZ901801271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbe443d32b994f70e013958f7b96d1a30e4aa586ea969cb71b5014df2c4cd4a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR26V2004613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ca20681701a15a64d2a561770ed77e043717c4f712bde51a3e5a244807c8bc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR26V2004617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3eab7a56b409b5f3b6dc26c1a0b6423362021fdb2d562537afc30598dd9fe24. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:26:21Z), 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/DEZ902300548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a66e05f9cef95322e62a06b508d84679812066ea581e2bf3483c76bdd028d21. 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/DEZ902300557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00197f7d2edff86f0594133bc7bb4c2adcd836ba9e97d910510cfbd4654574b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEZ900900616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef8ee452c82f6b4e7e665d6b4865b12b0af120d73f295141dfd4182e7cc2eb1. 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/DEZ900900619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab996ad6e477fdddd89544db65456fa248cc9faadb9d7a06efd727608e346fd7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ900900622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee7b5927be3f122aab31913a532ace9fc0e6ca5629cf07817519623ba1e07f1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEZ900900623.