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 0x723c909d162cd4e602fcb4d43a751e330fe096b511c006f4e3ba25c67ea07dbc. 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/e8017240-454f-4d19-90e3-1ac225018242.json and https://artists.proofprofile.net/proofs/artist/e8017240-454f-4d19-90e3-1ac225018242.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 0x6d6c90aec0614e81724374cc0d01e3522b1d7d5c661d12369f9737a111757b88. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:03:40Z), 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/GB8KE2315354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93eb85d46efe322afa8b8aaef650577bcb1c59c330a7cd92a42435f765f5ef64. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:44:49Z), 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/GB8KE2315659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7069c2239a727eb6f230b602e4e1ffa4b514327d3820fa1e7b86ffb23d0d6ed2. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GB8KE2317990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7069c2239a727eb6f230b602e4e1ffa4b514327d3820fa1e7b86ffb23d0d6ed2. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/GB8KE2317990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebace084a2461b2694454a9f1c1d046ad25bc2cf7271e66b7ef38e7b6022772. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:06:15Z), 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/GB8KE2321434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9897c6eb4086f1de769642d07d148c885f9e3d5a86960c28b5bd7f2621283438. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:42:36Z), 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/GB8KE2322032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797a340c4279fe5d73537e72c4760803cd10dab0bbe6c7fed9757ea013ef7fe9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GB8KE2322034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc107bc24508119d3c5c8af9ce34998b6ffb734e72755980dccad747fbc5b8eba. 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/GB8KE2324902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aa49fedf4ad2c0c32f12327bf1b5b1a20f32b6eb04d55eb2fdc60f3f51442c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GB8KE2325561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0230db00160da9fcd84d2afeee92da532e28dc3e3aa715949fab89247a81d738. 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/GB8KE2327009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81f6d4a2953d4deac24cf7d4635b28a20f6464834756d24dc01dcee94eec69a. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/GB8KE2327084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6148d8e5519056d0cf263157516e19a8fdc92cc5570fc87e9103abde86572509. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:07:31Z), 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/GB8KE2329275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb692c5fd07d620b6e73da87e3e4161428019561d400a633436dc9c2bfb79be. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GB8KE2329276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097bf0a142b6e02ea7d8f200a567e86c97a598133fbca6ba8c9596727ad5cd83. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GB8KE2407587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd9363298624f16f38f32bab2b09262e54dab75469456953b9401e933a7c0fa. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GB8KE2407823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6794d7a6e8adffa9873b1b87f710d544fa41d50c4fbf24ad707ee9be1751b9d. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:37:18Z), 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/GB8KE2408151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa320ee051a41d4f19c7f1531174f3171a56abb26bcebe5019364e2dcd3075150. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:04:42Z), 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/GB8KE2409751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89b85fce6df6c09d9ed585148880c1a7d738956bffb4e29da6300c64f6ed12a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GB8KE2415878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f44c09162b2f6cb3bcef2bbbe734d4abe8d6c5915f2a5bd9a9bd8ce7001809. 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/GB8KE2415880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f50a58a4a58a17a87972b28dafcca59a9fe757c57489d640deb33b0d214300d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GB8KE2416886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d2ec35aaf60420cff0ec6cba0ed1e9c7c7ce88583776befd2250b368bd4fda. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GB8KE2420689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341ca2954699eaa1ab0145a673e5fb83bb18f93adc08f6cdb1a1fdefbb9141fb. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/GB8KE2424198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee70be6bb8fc22d20d1d24b1cf19b323e634f91b6c8e38fea81b0a99078a07b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:22:46Z), 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/US83Z2430432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf8f5b6330226e3dfad96efd5b83c2b2f5b00a66c04c4026b97551a54d0e32b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:49:21Z), 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/US83Z2430434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54efe92d32dea742ca42b7b1f20390529b064e5b8957f08a98f0b8a51e9ca3e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/US83Z2430602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe667bad7b8c44726d36d60fdacceb1ac017e57dbecd6ff2301e4196ca7e9d1. 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/US83Z2501860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0961a53aa8558f95ab1203865f66804f8b47d1db0df5268f6cc9ad2ff221fb8. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/US83Z2501861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71bdd433e7b1665114231191ec51d835cc10e5e0b72c2f8b50456ebf085352d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GB8KE2509882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a354f3474a0df29eb636ef9fcc3f5369d45cdfcfc2d6ce652249e8e4e8bac65. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GB8KE2517200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9787478ab931d8d563c675080d683479c7d64a95afd0d3383413b0caa89576. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GB8KE2519383.