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 0x5aa80dfeb56bc53bd925bee0fe7d9c8f698fb7342d6f3bc5dbc036038e339a14. 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/730396d6-0e0c-4159-80d3-4dffd595f4ae.json and https://artists.proofprofile.net/proofs/artist/730396d6-0e0c-4159-80d3-4dffd595f4ae.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 0x9e852e76bbefa6411d33fb572ff509aa4d0ada547e6c9abc33e0c56fadaf7152. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/FRX452297094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfe8be5efe17fa30a9d083ee3dc2dd58771cf65dd1df316911fb3d6506db3ac. 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/LBA132300700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf17d3d6e8134d5fade50716063ac34d8f5259d5780c3b846126b6b56e1af02f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/EGA262004891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5509c21b2100965eff1bd2dedd8b601089fbc51a064df2912f4f0b8a1e7b4c7. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/FR96X2106154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db4d85e1d8012a75007b0d319d164c041a6f2b6897c98106396dd4ce53a1b2d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZN882283024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b826774cca4aca45110ab0f8530a6b296cf0900ddabc7d87a7146efab099494. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZN882286208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9090035740d5f90782ec9025a57390ed8bd89578d4f378aa06a6380a1f7a85. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/CH6542202904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c641edb813547599999afeef3545ec8e961b9d6e84e1f116061d4a9fab8f1b. 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/QZWDW2220061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc500592998442ec0145bc6c66f9029fd0642f9be66a20b8a9f2aec499bd17847. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA082309656.
Min Trohi Nti Ana Chkon YebGhini ( Ft Amirou_19)
Hed Chira Khatira Date Tsawiri Lopera (Ft.Amirou_19)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e06045deb8eedc39ca9b593141373822f1b4a7e0760f6765dd8b986f124c1f. 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/QZZ662432496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbca55cfa1bf0e7642af0db400814121e353d56344ad784252cd06c9fe4305e8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DGA0S2410978.
Rani Khayaf Nmot Bla Manatsamhouch (Version Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf356dd28132eef4646017d4e1f73666d979383b1ed59a89eb736f2b6721393cb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR10S2509396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5618489d2c63c65198c2208ac61f461f450294973332ad4b864434c5464497. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DZA102500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa339d183f1c9842e6fedb6070aad1050e3d854da22b3f40da299aa9d304fe351. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QM6MZ2533936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7cd89269741ee09fbca68831cd43c663b6000ab2ddd738c1ab22964d192fba. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QM6MZ2533938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7ee3dda8dcde0151967a122c3dbd26555f204d58ef4c73a5f2981fce405f58. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DZA102501076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bca5d9df765d466742adc03de349a82f5159fd3d536afd88e7750b10e6e7df6. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/FRX452564143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a1e92088d74bbe2ad295fd389dc2d020043064e57f8a983101e0c851bd496f. 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/FRX452578058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5c9c5f036c72ec9ed9f9bdd6bd78b6f9e0e2a19433d04408587b1a64851c38. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX762551062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6917401eb0de2c5b557a29f04b5d8efd64ba283e4dd4e2d0a0196643533e4f31. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/FRX762550530.
Ana Tayah fi les urgences o dayra l'ambiance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95d57c56d7480841fdef3fc9ee301ef27dd6384743dfc97941520354c6cd5fd. 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/QMDA72530994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a62943defb13e5c68e8bf11e1008f6daf8501332d49610fae9bacd95d397ee8. 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/DGA052594063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb3d33ac79c7870a1779b0c2561e7a7effa6ec0e681a1b795ed9d369c5d3004. 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/DGA062533625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa425b758e0f346a0ed227ffd5e71981dd2d4ee05791c90fadad1d9e92886d6b0. 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/DGA062563414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5906daf375e53e5031703a69bd5c76f30e99d638ec610230fcaaf5d8bc72d13. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DGA072515254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfe65f15fdbbe243cabfdd6eff4b08b0f36c79dc7bd3c2115cd4c4aa10580e7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DGA072515253.