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 0x6fe296497508d945dbe60ed53bdffcef2901bf1a53988fafc9999e7e771fe51d. 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/d44d91f0-1e40-4d62-9a93-a978e8994ed7.json and https://artists.proofprofile.net/proofs/artist/d44d91f0-1e40-4d62-9a93-a978e8994ed7.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 0xb46175400cbd1ebd1e9d070c006a86b1e8a10728f11e617c3eb1d154daed46c8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCADT1802126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd714c1c2f36e28a4295fe16743a400b86ad2d6c7e5289156cc0cf7c186dcb81c. 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/TCADT1802105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363bece289f8ee8370acb22a2f6bea1d4e02a98f1985a1d6f5d7a4ddf386c85f. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:33:27Z), 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/TCADT1802112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbce6993bda0ff6ce98fa6fc40b8391201d5a17d6242cadccd1fe6ba9ca34d2. 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/TCADW1831316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8498171d4f648943bb9a4f069fa791d7e3012fcb77ece9bebaa776211c896c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:38:08Z), 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/TCADZ1836978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe75e1e5a8904b699120ebf41e0c8c06b18d5ca0dd89c4fe83a62a0d44a6155. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:12:02Z), 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/TCAEC1920936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b6b97a3016d0e81f92d70f3bd67daf24d9a261ff51bd25868c74ce4998d30b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:55:21Z), 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/TCAEC1935499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d805e0d35e87f9839bcaedc72555469ec92a450508d7c9a6697ded8d1829953. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:14:49Z), 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/TCAEE1923480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebc6f8d28eb2c9cdcd7e5416c12ed89f02a2befecef10942a1bbb88f4540bb0. 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/TCAEH1936272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c9d69d7427955a882c0160c814aa72607eaf01dea00996554c9196db4f2bbf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAEL1982771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947d5e5da8e999b2f10c73e094cb0679250ad7e0b61af088accf2ce4c9769757. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:22:43Z), 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/TCAEL1982826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af82a4b966ced5b5f1310392c09680546eb4f22db3d9796d984eefea24a0f9f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZDA52023435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f892692aebbe6496e13043e8255e5b26bed3c3632db5124d5cdea8fa7a7b4e6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAFC2081356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258fc31f9edaff0c54f56276545f0a8f2138cde2610f7b8cab7d1338a9d89f5b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:48Z), 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/TCAFR2158326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62284a809bce779828e44618ff039b73f094f2e4f11384caf548effc038c6dfb. 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/TCAFY2114922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81176d1b37bacd67ac1de99bf41ce99750009bafaffcb2ce8b8f83654fff123. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:51:01Z), 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/NZPB12300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0199a5813de5c63740eec22a48a62f315ae85b17af883388a1b43a2f7f0953fd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:34Z), 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/NZPB12301624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7f6dca3ca30baa7e0770cc063546bb479ec90549105d341bf80a2aadd2c2de. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/NZPB12403532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cf950239dbb4d7af27e2b7b69c1bb86b8b6f38eaaf63d038001adceb678a87. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NZPB12403787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4207de4dbadf9e22d689e67e95b4ed2b64092fd69339fef0bdcc1f289caf2c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/NZPB12502764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a132dc1ad7f71395453ea9f3243576bee0a5f50ed26ebcef4b9e8a68e4d297. 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/NZPB12501893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6336f011e4f83b41c310d4455a11eee917ac7354f8b33638fe3dd2aefba5fb5b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCADJ1765467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782f3bee8a01b9b8fc0928a2972ed1749626623b61a803e47e2c24b91b89ee7b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6P2109672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2b12660ac641c8c2e12d758f52c843ca378cee7323aab7f3f82b7bdf13b88b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZKSK2130025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd951c701fbd685a40d7bb783fdcf4be5058b8aca9017e9bd2973228bfe7a945e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NZPB12202291.