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 0x0aec2c83fe750e22cb5ca563676c8f48f5da50f1955a9a69227dbd7b98d0b27d. 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/60182162-35e0-448a-95cc-ff096d3a4d33.json and https://artists.proofprofile.net/proofs/artist/60182162-35e0-448a-95cc-ff096d3a4d33.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 0xa874a6042dd60cf1ceeb709b4160d12f37918fe297ad3a46fc41d1c1baabe484. 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/TCAIL2459809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466d8eacd01c34f3fbc3f4d68c947c61f3915b02babdc4c69789efa4e5510de2. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCAIN2418491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3afefeb46506a1d37a191c760822c7d6024df418cd5de1bad7524088870528. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCAIP2407725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13ac4287f077644f78857dad2b8b26ff346b3cdf6e596831de947b8af1f7fa5. 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/TCAIP2407743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b99b66bee57d6185dabf39b0415fa1834151b4e1d014a051124505a8673768. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCAIQ2482073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4af4dc9ad42631938714bbd5a91468fb559c571eb93b173944dfe83426cb5a. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/TCAIS2402363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4414cacfa2fa32c393757f8dc7a7a7eeea5d147d2f366a783bd2bbc65c60e1ce. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:00:23Z), 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/TCAIU2400968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac65e35d1deee25feff9bb51b57314b17a34c6dc8098a4dfa7a8696a31db7fe9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAIW2439726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d595a8ad075cc9d171ea2fec9114aa70183f9b0e1a0b7e10517c17cd1da27a5. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAIY2416880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c38178be0ddb92444252450f14994a70895b28fb6d5cde46992e46ef4508698. 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/TCAJA2441153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5001ad2caf24fbeabeb3883afdcaab36194528cde013ba015902a989215cc26a. 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/TCAJD2450879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0547505923982f0b52100a8efa27acb118c3677f59e6efe008033ebc7b403ec2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:19:12Z), 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/TCAJD2450884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcf44ac91756f21e65de035923f847e2ac37e598b07345e93c803cb4f2c0a8c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAJD2450890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616c6955943bd652e6f4272e1ba8118650fae63b45c057ac365abbf1f5fe1779. 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/TCAJJ2555234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7270c6200d42fcaa99b73182943b0a9c12989b2356514b292ff21995c8f82666. 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/TCAJK2588911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b572890a769574b0a35576858923ea177df6d3347c4486602004a9bbd3725da. 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/TCAJN2521840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de223f7735e309030cb33c3552877498df096601f42a2ab4bfb414901af9e90. 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/TCAJM2521847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96930a97a0886a4244a03b3cd60cb99e93399767530d5b41b64530a3026449c. 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/TCAJP2509380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a335ae818a3f0900118726fcf4afbf21dd12f5cab42f3f80646cbcc92f2424. 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/TCAJP2579143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd67d54f7bab443c8e23e92172792d1c340d7705a12a3118566a4fca238a842. 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/TCAJQ2589529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2027dce7f345e0754760150cb547ed2ec800c9a517a238f0128dff391ee01f0. 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/TCAJR2589536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345b44217960341f929ec7f2584653e1377a44da341f10fbbd6b1ca1af2e73d9. 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/QZTB22587107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8079b9bb28bab108b7920adba1cb43d230974cfac9f905dbc3a1420256a107ff. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZTB22587108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b2176e465ac41f04b1d7cd0ee82b5d8a01e32f2325c5eaeaa7ed67980585ca. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:33:07Z), 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/QZTB22587109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55841d96b7bdec0b6b493c2f53128a7c29ead6dcafe701b1ee0eb05d18eeb8f. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:08:39Z), 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/QZTB82532636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dfdc355d5c4ea81abcf5fa6959ce142df779dc8e42652585dc541fe436ffc3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZTB82532639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc194b6f360c5ea2b830c77e05cee85399488c883cf92fccd09c085b3587cb8a. 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/QZWFR2526702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae7211d19769e457c401ceb9548143eb0b2d9059a13afa9498273900e2ba507. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:33:22Z), 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/QZZ7N2578787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e9a63e9bfb9cd9c37325061ab7bc1a15472ddc45d525179ec96766234ad4aa. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QT3F52551450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ecdc44012ac07f69547de13f021d99471fc0240c880c3c6216733f22d024ce. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:57:06Z), 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/QT3F52551452.