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 0x8c25365a75210810088d32e463850fa3be059cb359fca847fd62d141e79e1dae. 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/329381fa-184f-4f8b-b265-cd605593348f.json and https://artists.proofprofile.net/proofs/artist/329381fa-184f-4f8b-b265-cd605593348f.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 0xe611334e50410ea774072e08e7a9fcebe032d41d5eabb9250d66530baaa8d3f2. 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/AEA0Q1714545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc890870b18c303f7185ce22544bec788db7c8a8a88391b9a5f2fd243bec1505d. 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/AEA0Q1714539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20074d96841ad031bf10b515519d360483cb163c6b08bc1781ff3144451b858. 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/AEA0Q1714546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151b4d24dfdd291a206efecaa848c1dcee6799d01663f48c0f6cc8932fe59a5a. 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/AEA0Q1714544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe611334e50410ea774072e08e7a9fcebe032d41d5eabb9250d66530baaa8d3f2. 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/AEA0Q1714545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c90db54a40192f07bd42b3686e60cc2be3b9bbad5741e9f30ca209eee54c730. 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/AEA0Q1714543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e1fc9c22b3bd0718051cdb830dee638920f61278a74ec53f9a1193867a63ef. 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/AEA0Q1714542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351ce02f02f631e7b46c759854f11a8762d7c8a75e81665446679b1cd9d25766. 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/AEA0Q1714536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d269a59a4cad8b0841bc2d87f6850a33557c5561acd17117547fac47385279. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/AEA0Q1714541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc890870b18c303f7185ce22544bec788db7c8a8a88391b9a5f2fd243bec1505d. 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/AEA0Q1714539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2e3486f532933b51a12910fd6d5c529b1927e8f4caedc7fd010d4693079d0c. 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/AEA0Q1901019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2da2eb18c200a709c627a64300033ea98eb239e5f24952103c1fb755ebbc80. 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/AEA0Q1901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb339b488f45b64ea5de57da04b8c7d586617ef4a4e22179d385ce5de70ae83. 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/AEA0Q1901021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23b07940dc71c768969fd196736a0b583bbf4dcc614a9b0fb71f61f5aefba7d. 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/AEA0Q1901029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2e3486f532933b51a12910fd6d5c529b1927e8f4caedc7fd010d4693079d0c. 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/AEA0Q1901019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2da2eb18c200a709c627a64300033ea98eb239e5f24952103c1fb755ebbc80. 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/AEA0Q1901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb339b488f45b64ea5de57da04b8c7d586617ef4a4e22179d385ce5de70ae83. 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/AEA0Q1901021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef05cb3b350b68aa2f820c66859c425e4540ddef230d623843423a1a5010337. 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/AEA0Q1901024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23b07940dc71c768969fd196736a0b583bbf4dcc614a9b0fb71f61f5aefba7d. 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/AEA0Q1901029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc736b789877618c1475319c383114037dce429f7340ea806d96c966ca1bddfa2. 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/USHM81998028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc736b789877618c1475319c383114037dce429f7340ea806d96c966ca1bddfa2. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USHM81998028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8c3781a529cd749a9cf604ed0106e0837f33f49359f414f42958ff3b919470. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USDY42292791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ecc69c531cb0c449bb76bebeddbdd531eed0e3e1105069a5b7feece72c9980. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:19:19Z), 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/ARIXB2206713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb599059b687a9ce0552f7af91b532f08b6c40f06fc1349755d3ccc981605619c. 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/ARIXB2207121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8c3781a529cd749a9cf604ed0106e0837f33f49359f414f42958ff3b919470. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:53:43Z), 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/USDY42292791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ecc69c531cb0c449bb76bebeddbdd531eed0e3e1105069a5b7feece72c9980. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:11Z), 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/ARIXB2206713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb599059b687a9ce0552f7af91b532f08b6c40f06fc1349755d3ccc981605619c. 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/ARIXB2207121.