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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d46e27edb22e6ab6a7fd3357ebb8970c5142824ce42da04ff850296d9ff58e6. 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/e951d2d9-917f-4356-84a8-26f95c2bd13d.json and https://artists.proofprofile.net/proofs/artist/e951d2d9-917f-4356-84a8-26f95c2bd13d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11004e990733422bcb13c191f54108e00d84a4466beced914bb7a933737b2e4c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/QM4TW1880774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5b782b6be5712c601a8f21ddecc2db28da59c017ec7182b4c8e2509f9563ec. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QMDA71871575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28617793367ecbf236181b77cf5ce52ad11d472b82ce7b2174286053550c8df4. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QM4TX1889460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32fedf1070ec2d53715d485f2c2cd7194abf75d7fc14011ac370450ba3c5e7f. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QM7281770631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a1dc0c3568c04330de1f61fc8b04ca650b88f080d8eb0d6c3d95f3c47cb553. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHZ62275280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ffe127ab1ba7ac47df3c1fc794fffe72c81d7f465ee5d1a84f6ae16e19bac0. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/QZW9K2253022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c39830ae86979d81180a3631c355e46035ba53c262dddffc3cc38b6cc645f1d. 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/QZ5AB2357289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83a3c1fd92eec00d314eeab4a0f3dfbbceae322509cfb503c97d15ecaf26d48. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/QZ5AB2357290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827a7ced58747348d08e725a8dbde2acfb118ee502b077a14965bf78da3b62b5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZW9L2294324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df3383be50be6214f0f115ab3a0cdc62911aae10bf2ad5bd8b1d1f839a25bc2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZ5AB2357291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf329131a4b0277c238e07c9ff4f1ab07c0062e5953041e7f4c4ed86774824d. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QZ5AB2357294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbc85b14a1071f2eb52ecfa36256af9dabbd34019afc22098e3f21013c8edae. 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/QZW9N2269599.
Reggae I'm In Love (Message in the Bottle Riddim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459ba4dea96f9b3d0e45312fe9194e21b0bda2faecba130d40cba7265f23b51c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/ES71G2323199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd91ddaf3b58bc2b180d22cae4cafacb682e1469af07f942ead1ed3d424b8f1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES71G2333151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0d21f18ab8c57ea47f5fcfb8e4b084e2fb29d2fd12d3b45f197eb5f6be324f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ES71G2333239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4f221f52947784deb7ace1ffb0901b79c712e46a261b6b52fcc497cd7310aa. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZNJY2515814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d6f07294b057ec74a5c758b6539e0a4fb5139eec448b9c0c85107c9f4f50b1. 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/ITP842300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf629d33986c9faa5ee46000b37bfee82749176dff998a8f522d147958b8eb64f. 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/USHM91866386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a1d478acd344d63aefccf0ccd27d8bcd4eee8b6958d1adb1ab4a19d469efc6. 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/USDY41735167.