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 0x0105b90119c4597ea35b71dfb8452017751fb95aaef551362bf31150e7478481. 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/c8662d4e-24b6-4314-9210-f40707a629b6.json and https://artists.proofprofile.net/proofs/artist/c8662d4e-24b6-4314-9210-f40707a629b6.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 0xe1bdd2a9059e321c44ba16263d1d12cb85211d718043c6a7f78f0f4a2e067fc2. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCACH1556876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c40cde49a889cd8e9f2f57d61eed8464e3e8f316627cab2b1bb8884957a1898. 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/TCACH1556877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9120ec5d89d9a312f1a76de9656a7fe4e857d225fd6ca235158b6e626810fd72. 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/TCACH1556890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34839a57dee2ce3fc23da723e58a1e58362e10fa6181c6b5b41220d7e2da1d5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCACH1556891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bb54dd1bbab914f49933919333b13baf1945deef1c6ad987e4e6dbf1b2297f. 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/TCACH1557701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2083b5600156769c444aa7f21a1eb23b4bc30b7f7f4088e6f66f04cb77952513. 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/TCAEI1997249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f5af8ed6e8abed87dbe9161c8e18e86c07a792b65f9745962c965418b7fd87. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:11:29Z), 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/TCAEI1997315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd836c776cc46b5b18ff67ec701736e8c63372ed9e48e427595ee2fe799beaf45. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCACK1571837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b06ece9a237c96119e9c65817ec18e672cf1b5210489ada47f74ce147f6383d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:52:48Z), 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/TCACK1571838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2f38d54921047af81667957c92787e6b24ecab619560aa92592c435d24514c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:08:34Z), 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/TCACK1571835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab8e5a14cf73f0c48d69724b4708f035759c2a6f81572cbfd87dee0ae3c3f30. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCACK1571820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc3900a002bf744772649cb0bbfbac5078f62ecee54b02145cd7373b957453e. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/TCACK1571827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cab8da53e6aaebceadbf9b877e8d22173c6f3b5930dfa1437733081c30c9463. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:05:26Z), 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/TCACF1564094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42114bf382f589df74d0ee6b2ccfd22ec4442d350d0f699a603cc33437546b5e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCACF1564095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76080ce48d1eaa5cd8c730ff0373db227797ce53f8cc68a844c161a6c1ef3f81. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:53:08Z), 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/TCACF1564097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8980250baca475b712559ea6469312d5b405207c2617d8d463f2a6e3159f2f1. 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/TCAFZ2265656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2766fc85e4ea913258bd9b084cab89d0063fe20632ad263338bb79f5e5131a. 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/TCAGE2220212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fbfcc89a97d927f0d98a7f3556101caf57fb7c9c6df4d678244c8090ea79fd. 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/TCAHO2350567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ad2d86f428fba5dfe527dbc03c3054a0e3eafe70d2407f02af594d2b380222. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:02:33Z), 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/QZPEW2441793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888cad7a2e0052ba923fb4262af7c049f9c3e8c0871a2bbf142b6022902ac614. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZVEM2390975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c559ac03b06e4bba578e458d84c69d592b989ecc27c893d6e23b422ea787af. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QT2VB2420809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d0c60a44c72beab3fc9f46d69c8bff8164ff61e5df8922e003fe7e4a989011. 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/QT2VB2420811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fbfcc89a97d927f0d98a7f3556101caf57fb7c9c6df4d678244c8090ea79fd. 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/TCAHO2350567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924eb9e02387b400ec8d02a723c6c788d832ef1252c7b660744c06d9fce455cf. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QT2VB2420816.