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 0x3674119c316eda581730b28f45f215f1c8db35b383660258a0ba98d5339bfebe. 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/1c5667cf-46ea-4215-9c69-32f751105c4c.json and https://artists.proofprofile.net/proofs/artist/1c5667cf-46ea-4215-9c69-32f751105c4c.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 0x0ed29886958a24fa01bbb80860109217346ce72ac8c4b5f35e6cf7de919e779e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:22:57Z), 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/QZHN72137215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbc19fc9ee0c4b2a87087783441d183983125aaa105b7a41e0901e400a59afb. 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/QZK6L2123889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d87480b979c5e606d5b0928cc547d3573242199315d9b846ad16eca40505cee. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:16Z), 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/QZFZ42206910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2fd259cb40e15e065bb9403ada7413a7e156d0b1adede21b4b1fabb21bf687. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZNWZ2182544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444a7ee62b24f10580604635958ed1f567130933c1c6dea676d1f15917d1f171. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMEN2198501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477983d07e763c767c0b54fdd8cb19ef751fc1cbcaef2e0b021657791705b971. 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/QZNWQ2145606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f88e0e07ae99a8fa45efd76bbda5b16bd93eceb367badabf61ee419c92a6bd0. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:47:26Z), 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/QZTB62206108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb933a71304d65f8d294ff4296e852b5e66a19da49ab8f3eab65cebb2d0e359. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:24Z), 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/QZS7J2366485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61ea39bdf2b8dbe9cdb5e03da67982a098fae99994a8bb992ac59d83f0a7e38. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZQAY2458661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcabd812f5d81910e6ca7c0ee7831c75b60409522ac00d494e14fe716242f21. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZQAY2462288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fecad29599d83fea7522d5b46958fa187a9f9f4392ff09d809e9c7c0f7c1f5. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZZ792425132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77f6bac5aa26b37f6705a77c1364e6105ecb36d8860630466a9929c3fe3410d. 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/QZWFW2490441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7694b0b06096d8e838c65a887faf1481b943ceee5eac77130f22789d045801. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7T2455325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce492d47531480746cede54fc5780c38d3e226bb1bffdb03201b57b81a5b468. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZDA62567872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484339c3495477160f8681e08c98af86aaeabe8256ec90cd495257d0cd4aa173. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:49:35Z), 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/QZES72585091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e22aa1267dd9a41d0ebca608daa03ffd04bdfd3ce272ac4d8c94f28f1e275f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:23:07Z), 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/QZHN62539353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76626ecf2d16ff4bde17d151e22e4a668bb8912ca21591306c60b82f11351337. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:18Z), 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/QZHN52552091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c81639c34664ae9984d80e5a1720c9c2871b37d7a7c96aa0a5232e68dcb5def. 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/QZHN62539356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2cfea1617ac45eebb6f199696211ff88f7a005e2c9b24875eaebe8adacd580. 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/QZK6P2509751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cafe1ccfcabbc724061984bfa440607c6218c32bf4b75d2b1659d5d9e456dad. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHN62539358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c973661b2aa75998c0faa78715cec86c8ad6faa176a7af68d443f1acaa9de68. 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/QZHN62539370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7af06f05fbc3118e39adb5b23dbcec2b93a6f6997af3a0712734f8c9381ee7. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZHN62539373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174e293feebf5b1b10a8d3a4d5a42c0dc14ddc13112a3117730e2ca764a83dc1. 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/QZHN62539396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71487f46afa1e8eccf2659b88370f034a306861c9f90a4bc8fc7bb22fc01b6b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QT4K52557623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9058b36d39e2b75d375946e2ef5872710a92f89efca8e22d1ecc5dbf4c719c3e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZHZD2579092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d0a735e5403181bde0f4fc26136ca28a264e0877be9f58028d953a7ccbed5f. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ7K2583846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebcf122a5a1ceca09eb7914a9e99bee95eeb9488bacc3a522061c42c96ac060. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:34:34Z), 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/QZZ782560870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e55ccf5cbe2daf758fefc6a6eb726cbebb0c523729792bf8069bbbf8849344. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWFT2528709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfec843f334c98ba4cb829ec423e208d2dd8eaa96cbedb572108ae0b870f5b3f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:04:06Z), 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/QT3F42591233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356488a9cd11e4da8710afe1a0cd03e087324d8c52d546f838a4ce37458b2231. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ72392160.