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 0x443814220ed3b199867408f36de3497d9466fe856e44fdaa18a108beff78b1e1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7939519-04a5-4ce7-a5bb-e405e3d4b0cc.json and https://artists.proofprofile.net/proofs/artist/e7939519-04a5-4ce7-a5bb-e405e3d4b0cc.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 0x540b8bbca125c64f67c6cf2f3f748289787d6cfd1d35ee9bbb1e06b5e9a1fbc5. 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/FR5R00908280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb747a518700005f9fb0496b0d8586c785a21ba0aa2f3165164175cc9453a424. 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/FR5R00908284.
Juste une fois (feat. Papis) [prod. by Jo Beatz]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70431b645f7d608560b113242f5638d3157f4e80d93d6a17691a2550a2a17f77. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FR5R00908287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddf1a327f62da0fa599465aebfa3179940a33c67367afd7596330f0e8e12c1f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR5R00909202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5bb061ec2fe88d7d5d2c821ffa44cfb8a5173ae4ba21a69e862dfefdb62d3a. 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/TCAFA2027893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ddf605161523ea674e44c1341e1cd4d09bd38fa480c45c22b0a874db469739. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:45:24Z), 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/FR9W12116090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dcbbac9e6863907d384b5105d6ff7d77f8492dbc647fbedac37307f882a25a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FR9W12102662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fc904fbc2af94742f51681b009be0e2f3dc48eec0475eea3d8d895807f593a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:33:32Z), 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/FR9W12102171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5781bbde10f4fdef09b11bda8b842036faffbd14507914d34fdf97b2334f62b. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FR9W12101923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa743a852c0c17b7bac1ea9774ee517af5fbeebb2fcebaaec6a6717538a31611. 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/FR9W12204839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf532f9cba498a6d844ab8d05bb5b07520266a4e87e85f6c8b5d0c9e496832d24. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/FR9W12209817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f7ca137f303f96354581633070c75b704dd2c95a7ead8e2bb193448e1cdddc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR9W12217408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e876eb4930c289338254f7eb633c9a23104083900be851dd08caf14751a9089. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FR9W12222912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a572d1fb5191d70f907dc3d973c2be893d97e4c319f4c31cf76fccf38840116. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:27:35Z), 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/TCAGO2288391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb3d7e8b442f343075e5a129a255f741498b555c234ef896da15617eff9525a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAGR2245897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bc354ba4a1c94ccb3087d205ea3818c698ae0a02293d037cad011af953b7cd. 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/TCAGW2325603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328f52362bf67fd640cf2fcb2561ce94349bae97f38a92a81bdb36214d202568. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:19:52Z), 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/TCAHC2360135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e95b2c3ad0ce243ff29bfdd09714930edc8499ca0a4a0434ce8cb52d1f2085. 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/TCAHC2360165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a068b98cd22e4139dc017e2ef704f8ab36085e517219faa7014f400675d8da0. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCAHC2383947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353410b3df87f1ce66d81187c4457cd49336197a4af3b5a7c360a295357006e5. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/TCAHC2384047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098d34c19f6d3b49a7467007cb7a0a1e3cb788fc686941b2d990d138d5850746. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAHE2314062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0258f4f0074fd951b4fe60c3c0a8a8a7ccb5ea3d10cd6683d1b933f6f00d9d35. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAHX2460558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4383ed96b25d454f412c93c9cab580d16942f664bc4564c651809064565552. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GXHAF2540926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b515d241510ac3a09a579ac6bd01f78617bd1155c662e98e32771c6a9025890. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/GXHAF2540927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ececc4b6adfe589a33bf6ab2a35e109605968dd7726cc9b5a0073ad4d2a213. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GXHAF2540928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0829bd346ec458bf98868db6bec0f15fae4f709cc4eb1a0426f515f17c672694. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:21:40Z), 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/GXHAF2540925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf477698a374403bb9247730c8d8af7a450c47b39b6f12784ea32c6f6297d6d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W12419835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9cb376c35d49c835dbac5a61be4c71903df3eda465d9fcdb477e8135cd0a8b. 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/FR9W12127898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9cb376c35d49c835dbac5a61be4c71903df3eda465d9fcdb477e8135cd0a8b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W12127898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b8a7af0081c3242bcb8ea2b357a3d01fd307021859eac48469dabd7697f760. 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/FR8Y72100446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12883d2a234d45b581321a6c2e5b010338a95468f7065d57ea0f8c93eae8bc46. 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/FR9W12468903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad658b2840461cd4d99cd8b9ccda958a4473c25f99d42b398c5e4ee56e62690. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIP2446495.