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 0x2714e5b1866759451b9106545b3d16d90e8d2cec2dd65dc54799526a713fba1c. 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/5515fedb-5271-4cfd-a12c-bf64e7910af9.json and https://artists.proofprofile.net/proofs/artist/5515fedb-5271-4cfd-a12c-bf64e7910af9.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 0x9922dd94e3fb15367bca8cdec1e65a165475ab325cb95550c58b9f0419dfe400. 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/ITJ501601912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27634f002470006b14898270b038ad5d9597e6e8e0e3674068fadefc881e591. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITRWL1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5314a4616fcc5f42d27e90b612d8cce339c2c6d764b8db62714ab20db2e476c6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITJ501703767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27abc5f87966736e0d4f4477ebf05d2d723bcf985a8bc31af6140a315eea9ff0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITRWL1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc280fd5cfd439ff945782a4e68a120c853cffcee4d39fb791f34d183e0a933b. 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/ITRWL1800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ac7c4fd6d7f517b8d6c037c18b8d0d62af01319c0baa5a39368b045b6bdf88. 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/ITRWL1800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc579a9cbecae56fba896187913f5e277ade5be4f783191dba1fbdc2e600ae1e. 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/ITRWL1900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244906aa5eb0a87a9b1d390ed58320723975a6515704ecf4ae2fda5759514d91. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/ITRWL1900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa978f06566d3b2602563bde9e56e4624a39d292fee2e6016f24a6c3359193f37. 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/ITRWL2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f0022538d53669f046a5017932607a2ff90d9245a76f25334119072400db90. 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/ITRWL2000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b7f4c6e15ce2aaf4cc74e9762ca5418c70da4b73b75ecca0705d884ce01840. 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/ITK192200295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c6f815197cef1ca84f4e5b1833bdf21261845798725559775f9df787a87643. 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/ITK192200297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c2cd520d13f7b2d6f8d577f22893b738dc8857445c84e4046e4f218750f360. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ITK192400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe641b99a2b36f37ff05644cf83cc6338a0f738c5eb922d70852cd19f9aab52b6. 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/ITK192400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c2cd520d13f7b2d6f8d577f22893b738dc8857445c84e4046e4f218750f360. 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/ITK192400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acf327cf7a56e703bd537111b5a21b7aa012acb3ac4d67d914b5106818c4a25. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ITK192400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010ce52d6f3675509123610c85cb863298158fff5e0d24ff0524b0f2e53edede. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ITK192400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3095e0fc86921f89509a0107a6880045248be1003c160954f30ab2d44161a0cd. 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/ITK192400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a81c6283cfdb99d6fc93d450bd98b0c2b0d7c1a6fdb58de542fd6b32c3b65ed. 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/ITK192400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b1a33b676c47221c8e83633a3ac5407c1aaf14d4a12a652a99c634cbf3279a. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/ITK192400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b0dbf07fb4dbbfef2702eca8b6a917d102ccc04a1b48339daaa3d93dd865fb. 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/ITK192400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34fb0fb31c66d079aaf71dfa40cf0bf96bea393d6180fa2a218cb1246ce9287. 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/ITK192400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6f3566a17d1ae91bf304b848ff32e40888b17e1c2aec2d5f4d154aa24abc38. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITK192400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de543b9dfd7e0f3ef828791d17069ec84a7418a0d48c944fee341e53ba54a73. 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/ITK192400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996370cef8d42301ec44784acc38bd5d1004ef02cc0a8a4cc9b1119810d40b37. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITK192400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce50992578e6c2956d328f624a56fc4474845882aa5e272dfe4b2abd81e0c71. 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/ITB552417320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64b65715b541981ba996ceed54682567f6a12acfa02037cfffb288a6c5ff4bd. 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/ITRSE1600696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c3634da664a8934c3bdd86422858441c8120d9dae522b24f9a25a788110b67. 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/ITRSE2000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80081cfc0abb19233e0fd363484646902cf14ffa44bef5fcda3b5366fcbae47c. 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/ITUR31994014.