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 0xbb8165e3ed10e04fe56dfa987a581be0ac1cf328391ebe05e08cce16f15b198f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46c324d3-8c86-44d2-8962-d05eec7e4d46.json and https://artists.proofprofile.net/proofs/artist/46c324d3-8c86-44d2-8962-d05eec7e4d46.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 0x746f53a88485faae4376e89623e8ab044abfc353c336be0895e7d1a26d75c308. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:35:50Z), 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/QZHNB1990062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3ef71ea0f35cc6f6ee0e24d67d4e27834b471bd78ce0a5ded714df71e8ace2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/RUA1H1947246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ca05c401e71ce18277bd594f83d88ed919259333b00047aabad05cf98eb0cd. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/CLKT22103910.
Deja Wopi (feat. Alblack, Julito Yao, Kid Lucilfer & Dieglock)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494745d7f7be7303fd89a15d4b2a10d520d2f4fff9946dc1d56a4ee1bea4f76b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZZOPM2239916.
Maipu (feat. Julito Yao, Alblack & Kuroh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe341b11082fb273c99e664a5f9a94075a1bc21a57e925f7973796b101fc938fa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZZOPM2239917.
Geisha (feat. La Sede, Tane, Alblack, Julito Yao & DirtyBwoi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4ac0992b34dec6cd2a317025e57019c2ab21b9397e74cfcf03a4093316cb40. 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/ZZOPM2239913.
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
Atencion Al Cliente (feat. Marcocaina, S1naka, Nihla, Tane, DirtyBwoi & Plaketa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7d0826c38714792fb62d6cc2732672c3c0c6bcd2d8a84b12f635af37d89209. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ZZOPM2239914.
Lito (feat. DirtyBwoi, Tane, Nihla & Plaketa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916b094c1c3cc0fca0b7b155e8b28603279b972818274d9915a7483423c510a3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ZZOPM2239915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37c44bee85e24be4811bc73a63a4913d9985b2e760c91c38f5c652581416d16. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BK4DA2306455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef2349b14a491b19825def53933441fa888080d6398f8282459118339751985. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BK4DA2306458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb60867001a25c050d35f0af9173d38c1a5fe8723b68380dac9ce79ff41fdc3. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BK4DA2307068.
Jimmy Entron (with Diegxmusic & EasyIce)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7e477f769374dee5a5129b9d9e7c7a7031b9c2d0505606d3cc75017edfd6ba. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BK4DA2307072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbd6296b96825c77caa8073d8c425b58900b3f3c69b44edbeb5f0f45e7de72c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BK4DA2302544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c975e82fc12ba45f0aa158d3454a28ec5e964027b5a91aae4e6e33e70bff41. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BK4DA2306456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cdf676340b90090aca13cfe8e5659851e5632a7ef149a15218601558bcc0c1. 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/BK4DA2307140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf875bd8e0bc88a122d5431fa4a552a93c02f000ecc2d0eb37ac62b6afd60e896. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BK4DA2307145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31435bf7a172c9818e1462f36c1f5f554fea281a3f8f56de91f9b8b9882ec66. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG2419619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eef1708bb20debd0bce675e8cebe4efef949de04ab09e526bfe064c304d0cf1. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/US7VG2419610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532de2b666002274dfb49a6899b0445151cc600bd003c12d8576f22220058bea. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/US7VG2419620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f693676ebe3bcc5c3c783930a1445cfb1d3b7c8aa59120551c1a120bcd0af3. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US7VG2419621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0776162321defb56fad2d8b07c49b79143155459453c7157dbb8f11735ffaa6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJV2439580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24619783df19427887459f9205d797590e310fc08a65a15c1d6f22d3a73fd205. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJW2527233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afaba9b6f6534b77ce51c733b7532fb4be35b75be4c4aa42921ad9a675710bb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJW2527234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533abcc39138be115139b298e62968f89568d459fbed9011de14a605597946d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNJW2527236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6e4799222c418272298aceea09f3a19d9ac0372070cf8111192ae5e36f185d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJW2527238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726a13f7aadc90d075d966544f3e932f8d157bf5509ce2bc91b395c23813b53f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJW2527239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97da94e68c1e40255fc65aab46062501478494e62960f47f1d0c3b556c500151. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJW2527240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be9ab53da54096c7157f5b7db6d046b7fddee5d48d93520579f2f8fb339fc1a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNJW2527243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ea1bd2d5d0332203739afe7e5a22fee59cdd11d8c29bf7f08bc8059ba345b9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNJW2527244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd535e26bebd2e2a39772e4be849189c4d58ffc903ab12a01733d8059b8a808f5. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZNJW2527232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc660bb2c1f2193751b712bdef1e2629820c0dc8a55378c8e9be80904fc9f9f7. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZNJW2527237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7aa8ab15592e8c876f8092150c54a51eea2097f5ff3b47f37b07abfab362a8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZTVM2502301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d94a5efe751507acd543af9ca3c4f002132dd9239e5a9525e34f33ed1f51248. 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/BK4DA2401915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7992c83763923ec4f66beec40330ee2a04b99eefe29613fca4228f238a4c1b90. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJV2167297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7f4aef4c2c3acbf40b64409473a3fea5a8199ab3f8380cf762019db1781ee1. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZPLR2250396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa93ebf6cdb019cd17c4b23b4afb7a4e87f0b42711cba3f300f84709437a5d3. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZW9M2315884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a5328b45644dd4783ba48c1586d12f3b380c563461f3b6698a9609a2f6782f. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QM7282494864.