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 0x2477d9fc53c1361dc2f9e1e21581c80850ca2f9c4d3f6f600315201f848e3688. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87abe1f2-a940-40d9-8140-93029a55580d.json and https://artists.proofprofile.net/proofs/artist/87abe1f2-a940-40d9-8140-93029a55580d.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 0x97e2de39a14deb746a2407fc24b9c0a071c2ca6c33f77526083cca2f90633086. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:07:37Z), 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/ZZA0P2208412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398f2fbe2a9b6200a032d28e517416f8651925862ab3bf2ff277e51e6fef8c52. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ZZA0P2208459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab7d8ed00e9b764a4fcb17a5de218893666f690ac6bb945772789234a313d62. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ZZA0P2209672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948a954acde476065776047ae636aff0d2a6aee2f7d2282d41ea8db3502553d7. 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/ZZA0P2210265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ff7a68f453c86f10f559cb2bbf8b76bdb4778182cd76c491a046ee5c001c8f. 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/ZZA0P2210384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9461631ecfa6193bc55233fd2cfed4e0ce1ad7b8b027c3635f14b6aea200b377. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:27:43Z), 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/ZZA0P2210563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687fff201c77e68d014beb0df0d2d10381739ee606224defd5df1881519a4087. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ZZA0P2210603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211a61f7ad422e7b42c3b7ebce50a8a39860ad4f86e1db759e032cedc2530ae0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ZZA0P2210729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9b93d59d01c3deadb3b4f587b7f4137ecafcca95ada5ccd3106a809396058a. 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/ZZA0P2210835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14642c1aa12323b1b5e6f317d327de1f943bbe4a3c7996aa9bf510d35fc8c28. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:01:54Z), 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/ZZA0P2210836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bf2fa5107cd2f860996664dc79b98d3f91ef40fcf68e83bb5da9c9652a900a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ZZA0P2210837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6602ec726184c7eb861f500a684c1e118fe625ab838d73e3eedeaa098ea316c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ZZA0P2210926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aef2275b573ec41aaca7e807d3baf6655ef1120ae9d37a81a8a03f1202b76c0. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/ZZA0P2210928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ee6ee91ecf1b63342421101ae43b012041a23f34acc053e6a5b6f14f0bf151. 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/ZZA0P2210929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c7943fcb9d78dd8e40963b531634874414e84a012ad9477e16e3155cc188a6. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ZZA0P2210930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2d2b9e03a79c91d7c4b499db08e7058644cff19277e89f301e2ccda0592b40. 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/ZZA0P2207814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8c712362f4ef4e1b9cc476e9719e2a8a7fd4dd73825a2e451e9e7d30f893f0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ZZA0P2218709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27cf79468dfc3fcc73ff8c0855c17671bf0391481db1be04901c67c868f177d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:50:36Z), 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/ZZA0P2305052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900604b92754c31d70f64e9c17f5eb035b0b076b660ee6f49fe961a36782d4a2. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:21:23Z), 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/ZZA0P2308095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748e5c17a198666ea80561af57e394fed7677e7407d25e8e09e819fbcbbe600c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ZZA0P2308786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cabf286cdb8023fe776ef1fd6cb91d5c9499473cabefeeb9d49912946acbed6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ZZA0P2308906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35da547919c8395ba0aeec98e24510c7481e3c8b2eb6fb2b06cd8acfe4aa4720. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ZZA0P2309668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd7b20aa364202e04a3ffacb59bc7db71c683248f012eba844ef4202eb49168. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:39:07Z), 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/ZZA0P2313075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae84fc4c56fcc844f141eddb906e28c450a544cb3aefc69193a552fcdc33b105. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ZZA0P2403018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40713d2e0761a7c84a081587495fcbab0a5a1df891cbfa10f5293bbdea0e85d2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:29Z), 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/ZZA0P2404367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd79997d22496438a2bed57ec1227f2519854e5ab5f6c18ffdafdf89a1689a8. 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/ZZA0P2408142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ecc89cf6b03642868115779c6238890ec340d3f00da72a43559901d1d47184. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ZZA0P2410576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e21b76cd350c60edf57616c7a9fbebbca34a1cedcc35a64d067c0de10b49b9. 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/ZZA0P2412946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac11bc48a431d24734c76162ec6eddabbad721695a037159593bba57975a36b6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:00:10Z), 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/ZZA0P2502100.