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 0x21c4425de05a727537543bee04dccfff444653115189e6d494ac83122f7b1238. 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/b6bb131d-b148-404e-b9e8-622bedd41808.json and https://artists.proofprofile.net/proofs/artist/b6bb131d-b148-404e-b9e8-622bedd41808.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 0x4391fd9e0c71a022276386604237bd657ea113ab65b59d89169dc7643635c0e7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZES81917685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199a2b257f17569fc6b60e2187eb8f4a555ab9e6cf2cd914c02badf7945bab61. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:39Z), 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/QZES81961319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37468eab879436ad27fc198e93e86060cc39e5a3ae0140f05eec1f9473d93a89. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:07:53Z), 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/QZES91925166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448f1ef9966e3a61b7ab9813bf24506b353cc4b194dfb620c59e121fde34aa0b. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZES91969599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddde659f3f5ab957b4bcfda6a9f4463f3ad669886b2516fd64768336c2c9fc15. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZES91969600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827c49aae7e4a0c5c7fd9940f690a08d311e508ec1fb58d361b368e417367580. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZES91969601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10b13519d0718f428136aa7ce5b66d26f67357b050c23fb901958742cf9a6a5. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:12:45Z), 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/QZES91969603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1025706f5251c4fb878785eb85dbc7861fb22648f69c07d8ffd15280dab2e6d5. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZFYY1991623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19fa1dff521677a5849a039fe3a9264716616e577ec574ddbfd3512696470b4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHN51990585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a2805d6a949c0e5399f9827d20044271915c27319d7152eebce24e5b2d20c0. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZHN51990586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a07e1c646beabb6cb30d805730b775e97eb8710069a3f3928dded07650874af. 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/QZHN71932843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f6a03e70a39f649b63ebf69866e27247efc14e2831dfc9514faac83c82e22d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHN71932846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784bd13b975b4a8d6e1d8e1900bf0f562662dbbea89d07a28c8538d77fb8f9bb. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZFZ52024424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ca235a49379587b2803b47565c9b984e9759834fb0dcdeff17e788215314ed. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZHNB2076472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1016cc99d3846fc8852c05e813b07d210489d8a10ef514738ab3d2cfdb54693b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:56Z), 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/QZK6F2010146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bc803a40a6a54ed2dc317890c0626643310dc39b50fa7702ff3a6bfef409df. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMEQ2078073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009b82d1e61d963d9d6257b56f47f82d4b7d6bf78463bb8ce5f35572039a4cf8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWU2030561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954504ed908e2965ef02c2bd523ea356a8e213ee3266e41e908655352dc88a81. 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/QZES52149776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266b30d5a6fd8ccdb027aa3419f5d55f3566c4c592d28c7e8223f0399b5ec5d9. 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/QZHN92190589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93b228394179d3be98d81d162e46f8e61250c4f963f117dc397b1f6211c3dbb. 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/QZHN92172165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f73c406274c55f6a9ee30265446573c3658ec40961c88042b96c5a818c55feb. 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/QZNWV2163970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf73900e8b00a80cc85483cf6a39cd73899b23457c2a784baeb707cf577c6b1a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWX2127972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47b19a2ec45d3c8ff3eab2b9f46fbf2d521806f642b03628ec7788402770203. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:27:19Z), 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/QZNWZ2194788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8de6264698157b8f7a8ae08e949a82d45c90bba04b96f724f57226fc9f3ed05. 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/QZTAS2147388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ace4381d17671970ed7e5c58a0905b0c6492d04181ef1c5d84320d5eea54e0. 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/QZTAU2101685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87bd3f205d55f95176836e19efb9cb9ae2c001ace011df63e64ceaa8fb99d46. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:21:22Z), 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/QZTAU2106774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fbd3b77c0c34a2253e670ef75a063779d79c2aa68e8c86625701cf7d15f16d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZFYX2229180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfd2b286dadd23e78a2dad89d92e5eb4c914aca10760e1c6b13c0f7918fbd33. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFYZ2249799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba2938405298faea692cf6c6a4d129ed0dcebac9ebc652e68e3b80138794f92. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZFZ22277437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c965083709ecbf09171c98a6783e1519fcbb57eec933ca6b19abddee5b3039. 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/QZFZ32209675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b66bd1e23e5a21ca118acfbc79d6a3e0b66e70b264d0a6d3217c61a90c6d560. 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/QZK6G2271524.