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 0x18f24b75cc2f47c4f13bf8f1d4f4ceda9444c9b9a4d952b060180dddef35df8a. 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/368eee98-60f4-4d38-b634-d76b22876afa.json and https://artists.proofprofile.net/proofs/artist/368eee98-60f4-4d38-b634-d76b22876afa.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 0xb2a56934c8958752008e71c5ec1f63f9d3e021a4e4a88a7a7994db28379d35a0. 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/QZ5AB1632528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502169f08f2ff36a39989711350bab5026f551e4971e187119c0ced2aa2f2eb1. 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/QZ5AB1632534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132ae3c75249399cd21833cbdded9d659b5b1addbd1fa0b022ffc467ca6b45a8. 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/QZ5AB1632535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c73d1433972e354d278c4b468352813feed7eb5deffb6db382151353c271af5. 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/QZ5AB1632538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa369a46dfeaef1daf74aafba04172afd09ade99eac326177ab1249662a700fcb. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:10Z), 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/QZ5AB1860976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87555b87cf914eff30926206fb937967b3c146b8a4eca64fba4e53f741558fd. 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/US7VG1965147.
Hoy Es un Gran Día para No Celebrar Nada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e40cf4fcf25746d8236808409e40b477120fb4a43fee951a3c651811b7b4db. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US7VG1969126.
Aquí Todos Rezan Pero Dios Está Muy Lejos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcee87fcc804b1d50613f93fb16acb77daa53e50ea7e145d7e603b0e71ae06a. 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/US7VG1972120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c063a7d1545aea1df51ab087234e5bbe57bf1057cb44cc665b8082c4b82bf25. 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/US7VG1984586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa653114305ab408f1266ee97241b93609005aea96815cc05ac3e568ae44831. 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/US7VG1983659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527c298f59f5a12f8c9a3ba87076f496346ce1499b3f3582093e92b375a1408e. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZHZ41926550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619b18d10275ad5aecf19cff8e1eaff2f686e9806796d591b858894cced0debd. 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/QZHZ51986716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa961511136fc48d3737b80a6a94fedddb8059440bc0856d8cbee519e1dab9a7. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:44:22Z), 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/QZGLM2072366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69c8aeaa9272ecc4b751cce7c66fa6ebbbfd38ee1830a321e71407030566ed2. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:35:35Z), 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/QZHZ62064422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0c9b4a0edee1bd2e66becb486212c0f9a2bc0f5f170fc10e85effc66789a7b. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:01:51Z), 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/QZNJV2070651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6f26bde2470dc5397cc04777638128982e4a40eb47133fbf03f56197b0f919. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZNJV2134191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5871c045dcde9c4da3b76368cf0ea7b7615ac294d01493c15c8b6d4b5cf8cf4. 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/QZW9N2245798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6115e5a66a18b1776afd2313a936b972683eaf541a0b9a1fead1597a2847d82f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZ5AB2362542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2c3ceb797e5a5513054d484e8c5d2890821d86818c6fede97c0d2fdd3ca90c. 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/QZW9K2362428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29210c8dd7e97511dcf5f999a278433f07df3e4eb745ee67443e7342dfd0887. 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/QZES82503154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb647649116f5373b2626a67d881960cd12918c0927f7999af6c4bcddae4d0c. 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/QZNJY2555008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b12034c72426bff4470280960590064b292694e394dbcf3f9ef01935bd322fb. 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/QZNJZ2546607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb8cfc3368a010e151dbe53a069d946213bfa9520e7e16c85ac16d93bae0788. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNJZ2595748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75baf40af6131008369aa58199aafd4a7285be3ab5b423b2ac68849feb6642d. 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/QZNJZ2545041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd26a91a37e18ca0f41f74535c57cca8bc109f87e80b1a71a8a5b31a95a9453e. 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/QM4TW1939533.