thumb|right|upright 1.32|L'orchestre national d'Île de France at the salle Pleyel in January 2011. The Orchestre national d'Île-de-France is a French symphony orchestra with its administrative base i
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 0x682e40d9e64ae9a44e40c9643e5b6a819bd756116c888c46683b23f624589af2. 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/249f72d8-b85b-409a-b8a6-20d332abcf2d.json and https://artists.proofprofile.net/proofs/artist/249f72d8-b85b-409a-b8a6-20d332abcf2d.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 0x0d7c81b7581deccc830538ef2f44f8101d4970f9242e50f2f215a963e3fabcfb. 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/USSM11909111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6caff78d38b24df8962f7011a3bcfeb2ee1c72af3d39b6e0a2f0b9727cbbee6. 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/USSM11909114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcca436eab21b66254d5515edcee2ace85002421e24acc3d100124dc3af9440. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USSM11909115.
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 0x529efb0ffe8f6fec506d6a73d61fd04899bb2f05a5a339e143ffe9463c975270. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USSM11909119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54da08b16f560d974a42f2ee13860a60316077d39fd3227541dd65a6932ba0d8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC2101841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35de0d2a5615d18a04f5838e6e19f136bfaf44afc6dc7331021143e6599da138. 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/GBAYC2101844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715eb7a0af53c29676687899fc6559abdae07982303437188f703daf2da2a442. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAYC2101839.
Dix pour cent (Call My Agent) [Arr. Gonet]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd1b0dbc4a65fdb67feb28d55490a35c7fdcef9e3b4b5f6230071e4a257eba8. 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/GBAYC2101848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969acc6c8b1713c34828f23447049f2d38cd74b4f0864722ea383fb5e79d1db4. 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/GBAYC2101868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d9422540bba4f546d23856782e32f8ae9e2a1207bed7a155baec90bea946a1. 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/GBAYC2101842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd3d14382888e612a63dda633035250403de3f91b6414913f95e71a61a1a06f. 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/GBAYC2101836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e96d686b95a1a622404293de7fcdf14428a8ee183add7777044c6127c228e11. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAYC2101843.
Yakety Sax (From "The Benny Hill Show") [Arr. Gonet]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9436b7e6506aa31b3c6872c8c76bfec6451aebba83891196bbd07e36707612a. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/GBAYC2101851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8ab285c36aaf85f61078ce076fa64f2f82aa72640a0d60ebbc16b1f61cc286. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBAYC2101819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5319133887fb4aaf413b33342f50d4902f2d2feed6c7fc39e9a24a57dd79e1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBAYC2101850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24160c40f881355e4aaf1fd00331051f00d911073d9bf219485be60081ee87d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBAYC2101846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0a70d2dc0eec8d742302c78fe14291a191ed48ce8190b93b375342492ff78e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBAYC2101849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c6c2cd2f782e3cef0c443b87a22600de35acfdaaf923bf9081166ef62dd0a4. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBAYC2101838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6979188d2101d5a404ee9aaf255ee1d83a3fabccfcc78890a377e960e9d354e1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBAYC2101837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed40965dcd9196abdf5477b37ec97f68fc8ac0e5545de61df1ef659b7f94d300. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBAYC2101835.