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 0xd2435893014bd6f8cfb5e6843be6f57a874d101328130229acc6527b08ba1ff6. 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/90ab45c3-4617-4467-893f-90a66e3f806c.json and https://artists.proofprofile.net/proofs/artist/90ab45c3-4617-4467-893f-90a66e3f806c.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 0x51080e1dc33b6dc3df54eb3ae68500929b99ac99ec6d4d9f53ee9e05c446f9c7. 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/GBSMU7376251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb065971fe69f0dd98c9295918ae08fecc22b8026d7ad1cec5afad0a0a6b32d6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GX5MX2514272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8589abc86c6f80959073b52249e22fcd8d7b3b21eb1df1b881432a88cb2797. 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/IELOI2169125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb34858a18349653816ae888b65c8b5cdfe2af9f52aa9076b48a20e7de050be. 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/IELOI2169741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd33478deb554feade3d16b1d1e042c1a67d8573cf4dd62c98ffb75129a1c51. 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/IELOI2173612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dfd6789927f1579e3e26dae032bad02610ddff73ff0fd7974eb0296f04d4a3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:25:47Z), 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/GX5MX2567103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b1c551169f44efcdb93105f82a4ec59d5ff9fe3e1c30e3dc3646845877d6eb. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GX5MX2593648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6263f7809218e2b3a2b0ee25e136896e7ef4cfd01e69fef4f27b946d0e92aebd. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GX5MX2537855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55db332526afc75289750559ec826bd49adac0dd3834b8c3f83724e00ca95459. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GX38U2396315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84daf0efd09f3a80fa36fe07400c2d2e7151ebd4956309f6a8e3c88d98b9f8fc. 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/GX38U2335455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492a38fa8f69bd75a4c0234d425c1d6ba90838f5bb7261298a687e955c5ff587. 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/GX38U2365858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33f62ebc2c534fb2f5440c84a7b62262506cc3ba7bd0f0491adbc5a9432baae. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GX38U2359337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389bdce4c41707296a04bfd29ae3f18993f051748ece32e7f3264a09e119697e. 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/GX5MX2570020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec52012da5722b0f622da0252e8f195f4c328d0b9f625050051949f55c8238e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:12:30Z), 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/GX5MX2526437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da3caf541291dc45a0731d5407c8398d64c66e0dbb762b35c649f6406682991. 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/AUBEC2406698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b4e4e22dfc3a0766b085a8443fd008cddbe7fa76fd4a3a989abca1a900df30. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/AUBEC2406704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3880f1c6ef39ec78f67fb5548821d09d8e6deb9071dfd0c7efb77ac4eb6d55c5. 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/AUBEC2406706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1794a6f268b02e0576841c3e9f1cc4f6df3814c0904cba28fdcd582db68886f4. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:41Z), 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/GX5MX2528322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2609b48d54d8982572cc2d6104bd94ce77a1e0b793733411c74aa13e1914b4c0. 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/GX5MX2537040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c666068966c1d01f467eec8c9660c75e60e85da44485a0dcc1331dc4f2792af. 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/GX5MX2599742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55eac5cf8e1a761ed875728561dd1e3e34d9e5be4f86aadc1086da8a4f10cb46. 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/AUBEC2428745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469a64fbd813bda4ad6b71883af31675d9909e7215f02a897b78019eb5ed9762. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AUBEC2428751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd4e16585212fc6852272f30a03ee5814210509b7f1ab9fff723f4049de2932. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/AUBEC2428754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4368b5607403139f25aa8fc94b05f4b08ec082e119b1020705d8d0c76bb21484. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GX38U2549401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0dcaa1df49547f0d735417886e57ded9428d171f2337d8953f53f7de3adae9. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GX38U2558739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d8299a529eed775fa3f411d2da7a1f30ccf7a4b0db63746ea991b96e02d5d5. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:20:53Z), 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/GX38U2593539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e47722c15a1b148ec00691287e3f3fecc349fbfa94e4f6798abd017c4bb25ed. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GX3HH2512011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8179231c0c2e377b70119cee6258db4a1ff02876a131641761a654661aaa6c2. 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/GX3HH2567851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a11f3322ae7e862f2c77ea12f785caeb7b66cb47dd785227f781bbeb1688a0b. 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/GX3HH2580526.