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 0x904ef776bd58eb64024142e6a30e7a650584def80ab681c7e983b004ded0bbc9. 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/caa9a29b-66f2-4241-b50b-26f0dc008d9c.json and https://artists.proofprofile.net/proofs/artist/caa9a29b-66f2-4241-b50b-26f0dc008d9c.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 0xd0bbd6c3fef7cdb646bcf6a70e3cc1b9187bcf20df2f95aa8ba4828db1ab4d52. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:24:31Z), 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/ARF051500609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3086e9a604db2ca7edb09b88d4164c0695e6bcc855df7901344c27038852eb7e. 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/ARF051500610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd337251eff8573dfc46bcbaa8a09e567c4713be44875f0b9864b757d6900512c. 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/ARF051500611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48c0e5bd235769cf8c4b573270f9002f5d2e2272d7a9915768fdef5cfc082eb. 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/ARF051500612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf352351a312a9ded3e6aa3dfbecb71742ccfabfcc6ef7dff699c1595f45c833e. 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/ARF051500613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5476115b1930f7388552330c5d11051ded1e2ff116a59ef2880c3b451fa46c5. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:30:53Z), 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/ARF051500614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89e546563326a10c99842997d425d396e685a3962f261e7e914cf286736ff9a. 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/ARF051500617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47a7c77bf91b230c2f505a50e1dc50296c494b8d2924d1c75dcd5c97fb06a24. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/ARF051500618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe627870ca3376ebf73afd6188b543f32fb76ce7e5b8c666d20ed4d1b06c71ccf. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/ARF051500619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f78f13fe075819ed183e81748d11e3003697808241c9cceadae4a3b5099c27. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ARF051500620.
Si No Hay Patria para Todos Que No Haya para Ninguno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2554d8221a3012d9b5b0e1a44a58e026554ef51b1e0238732fff99eb8c160316. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ARF051500624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d9e566952c593c6ac60dd8e0855d263a311306d6f97f5d6edabb8f30d90ab8. 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/ARF051500625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2077cf2f236269464270fe99e38319b8bc4f8ced6a6a0c23ea25fc758898e7c. 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/ARF051500626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d09e4f47a379e252265e1f34f4cb186c190ad2301611615fc4b93589bcb84d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:52:21Z), 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/ARF051500627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152bc99804c988e9a5dc9c81a0985564eb0613b403db4c644e3ce2cd77f256b0. 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/ARF051500628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97ccf74985b546c62b2fca49a80c8f3d8d1add084c6229494f2da55cde95a8a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ARF051500587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a1cce07f0682fd4a9bbad6b70887214289477b065c23e2cfd70b206e2b8ce2. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:20:31Z), 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/ARF051500589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9635a22ca029cdbe6bc334a4fad77c68b029e185ce0f65e56bcf04de73cfaec2. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/ARF051500591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f0f3c0c17f846ff69d44993c03d59a46803dc83d83ace4d5e21f1956443539. 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/ARF051500593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49666b25b5d530746a20aace5092dba1183603699bbe6e271bbc1f2e15fb27f0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ARF051500594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ec126fab4611c55e250446b1ad5d32b77bab06ed24b1a19c8c262226eb6671. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/ARF051500595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5579abf6f8333db405b1abf98c7df7dd0572271bbdc27471a090fea44c83c9e1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:54:50Z), 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/ARF051500596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d641c87e22abe4a5b5ac0a6d319e8641fc8bf9d90fb42139b0294e77372fc40. 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/ARF051500597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07418ab7a9815f655c8f7203ccea3ed5e44b2f2e44b05228c3dece9f4605a239. 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/ARF051500603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c6bf45bac550afcafff8584382cca432b417a27bc85d7c0bd6667ba6b45b00. 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/ARF051500605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056e9e43f856e0768c81b68ef65ba9acbdfa2902aa7e30df53c80edc5dec717f. 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/ARF051500581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe30e7184bb7fffdbf34dfe20dee37e953fef204b624cf5f5867f36317b25e0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:29:09Z), 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/ARF051500582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0995be60ef0f2fbdab01454cc495dc242881ead0ee842e959a6dac193e89c95. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ARF051500584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5f6fccbe1ef0c8fb01f4c1bb223833d55017cf458bed73ceff4deeca82afd5. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ARF051500586.