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 0xd2acdaa41098ed421fa49f62fd0c47a9decaf4b02d592f91f8a4249ae3809b37. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a34b15a8-0b53-42c1-97ff-87f97a0f6aac.json and https://artists.proofprofile.net/proofs/artist/a34b15a8-0b53-42c1-97ff-87f97a0f6aac.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 0xae28fe399c10dee56d96d52e2730792b464c01a0750fb0f359ac07d6bd2a386d. 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/LTC911200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01cb6869f22563a1b2eeb5e27e6c958cbd875ca2f09f4f3b950093e0c0821fd. 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/LTC911200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4580aa625c5de5a07c606e2c96c203e3b1ec09694f75eba4c8e9d1ebd232fb. 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/LTC911800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb8b55bdb64d1ec62cb17a0db3b7323b0ea8d391f27df3686db97d997a01cf2. 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/LTC911900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f821b20b73124bb8cb660a9da483f30a776ee443050726d75fb7e18b67ee02. 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/LTC912000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c6d2dd292503d7c37718fd0304456c01c974db13d426917e3953191e071c43. 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/LTC911800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eee03c184909fc9d5395db53246e874fdf0a49ef3932d8c19f7fab869b68544. 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/LTC912000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ee11dfbdf34edfe5b9ef59eb8dd96ee2e69ce085cee95f183ac6b9a773840e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/LTC911300001.
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 0xd7cdd8370383c53db575393208fad5c802e9582f35915389c2ec04d9b03f76fb. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/LTC911400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a648c630a43449e7c69e4168b513878336da48dda949b78573e458bff61e67. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/LTC911800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8142256ce7e83bdc1f7da8beb82c25f1c2fb1dddcdc0a08afeb6f330d7ecb38f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/LTC911800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe923a6d926a8b4dbc597b26e0dfa954aa5d4730f4d229218224f8345286a08e8. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/LTC912000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ff5bb894b7c209b6a9a8b2f36c53f2111fbd1d5f6a8290e3be8ab77412d7ad. 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/DGA0Q2418879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1115fcb028297cd02df31cd9a2f75495108405ee8c1bb0ae49e6fc3b3b6c87a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR59R2454092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bd07789c89a768c5548ef373ebe399bc903c5eeda1d20f4b2b03d9a0dec478. 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/FR59R2344565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d9fa740d60ba8c6f26f92fedd02321514f0fed8b2b89c3f8402ed37dbe3ac4. 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/DGA072213427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd423ddf0d7fb0ab166febfdd54adc127ba3717d476a482a3a2c97465a1c660a4. 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/LTK152200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ea0f2d893e33d49f790297e7da9d051b1dd49ec61867cabef10c0aaccd530b. 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/FR8Y72300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f1d8d9fcf3fa9162a7bc3740e418d63c3020c886461ff0712e98040fd405b4. 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/FR8Y72300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cec8afd6f74194b564af0c24b117aeae57b788a7a2cc9555b972935a45a0ca5. 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/FR8Y72300124.
Les Prédateurs (feat. Naps, Hollis L’Infâme & Solda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa48d430c97697e40b0b4c74bdeb1a6c022b3c94952887289451eb53f8d0337. 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/FR8Y72300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228552bd88cf835174132ba1955c3bc0e10a6ff2d86f6091779d07bacb79b92e. 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/FR8Y72300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c249ac4cbb0fad7dcfaf666e263ccfe971a9c1f0198a42596c6d6eedaf2011b. 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/FR8Y72300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aefccaf529aa6e7f322d2f4c55bd8e9ebc00e0c8a767eeb21223f819c3415f3. 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/FR8Y72300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e65a30cb8f43cfd296c9bbc9c92d7d8f0480a056cfa1137506def7f53324fab. 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/FR8Y72300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254edbe8ee3af9d7f1c38f6d9b9c3d7117cb1b7eb9bc3e115ca544c634754702. 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/FR8Y72300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaecacb7b841e2edca16bd453d0e44dca04336573c0a4e37dab5c7cca27e1bcf. 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/FR8Y72300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a396436983a452500744007bfd1f0c080b5f04d4ac6d79b9e2f3a26719dcd88. 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/FR8Y72300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd067b3bf38efd00228e24622914b725f0e514e49a23543e7962ebaed716f4bbd. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/FR8Y72300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aa173d4718b902c601289f6214de33c3074edb5bc19411a2fcab3604fef282. 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/AUMEV2478969.