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 0x7626afe981de750f541ed1e739776f92339c841977e366f97d35ae011ffdefb0. 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/a7a9cb1e-b253-4b78-871e-b119ab95a701.json and https://artists.proofprofile.net/proofs/artist/a7a9cb1e-b253-4b78-871e-b119ab95a701.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 0xdc49df5365b58a3ed7d037004435dbcc6f974cb30e50f4e14724f689bd6c4636. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:26Z), 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/QZZ782496867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39115d3fbf6ffe0c598dad02aa3dc1d7d85a163642082c2e5ac746a1738451c9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFS2454843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89012bf7d157b692ed30fed15d123f21b2fd8ad30fc2b3f36c657d6887844c43. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ7T2414898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6337532223369da95918abe5cb0552eb52372165cd6cfd11741b609d957f8c. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:17Z), 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/QZZ7T2414900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e630ce0eacd065127a814c1943ab5f98748d8908a22b13749102c50ee528bd7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7T2414901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd5cf2c474ef870224bd2333fdb0c551981a5171937f2db648b17ab2ab44dba. 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/QZZ7T2414902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f2ca48d95bf204a14c974c04c13148a40e28799cdca2b3db9762232041ab3d. 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/QZZ7T2414903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7c5e79973d4a78c3e083a2f0d8444c666d99f6d26b99d17d9c10080e5285c4. 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/QZZ7T2414904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b28c2beb7b31742cd94ee6a418e41337ddc689a5765bb577c729bdaa572bb1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:02:00Z), 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/QZZ7T2414905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb222606e6efc5c4b9ba30d5b7d06d1b83af2011658653f531a7319cd0e31cbe1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7T2414906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2c5fad6210a9c9c994416d58dc1bf97e5899a3c488330817f494475df5bcf9. 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/QZZ7T2414907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900f07ab02319fc45fca4c35bf4783e15e37494595931ccf511c27fc896e4d1b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:34:22Z), 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/QZTBC2458921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a1f7b1488f6fff8ed3a9ea016764d7b1c906b12cd3bec27a55e8fdb948f1a2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZPLR2262998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888da3bbb3163c3f3d21d30222cee77ae3042353fd1ada729719958e7350ee46. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZPLR2262999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2a8581cf1ee1e05b556e87284e588ced785f42f625df82f813a09b92d297e3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZPLR2263000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c54e31ea0cb01dd67fd80e589db20075f256a44e2967120971aec439522901. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZPLR2263002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6884ad05c24d943efd517bf6842d81cb845db809a356c9809b3307e2d1f0365c. 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/QZPLR2263003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd437d28e89a9eec53b3c516e704628bb25348fe4cfa798643c94251e9cc389b. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZPLR2263004.
Misguided Freedoms (Too in Love With Our Future)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51baf58f849f940971ea52d29f032fe09660ad58c2cb519bd82704413c7d9383. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:03:01Z), 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/QZPLR2263008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fc63d6103026a8963437a724d608582bdb3e04b62c3b8682e1c75ab6c53755. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZHN92322907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b44c61a0377d7e0fcda2bc7e1e70926d1f271ee4001097880745449d18721e7. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZHNA2306218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4bbc63e9e1872ee34629ba0052e51acf5a22aaf3875102868f9516435e09be. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHNA2306219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b6cf44cd8236cae88da3f9462bf0f3761848a591d359e4aab634df43cf0a62. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHNA2306220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fb9ad5981b1009ea6dc9b895cd6eee0361d876bf4b47dedb5f355f5a3794c1. 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/QZHNA2306222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d0b1da9a35e74326aac81a412b9e1a5cefca84289ffd5caa2eb0e31acd2ae4. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZHNA2306223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0539900a037c57ee2c2089f317f01f7baf1cf302195d7a1ed111359f02ee472e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZHN92387394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc197a65ad445a8025953917f8a43422475f41cdf77c79113c798fc0ddab0d787. 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/QZHNA2306224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed04fd019ce8f40d5ae0bb9f2785988ba10b963d5a6c1a74901000d4e6a9a4c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:31Z), 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/QZHNA2306225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3f4e2c3a01e40d227e432e0a3eaca906517ee094b06da23b0fde4b07436946. 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/QZHNA2306226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9aea396458048bf70404022841f5febffeb797733d970d32e9ba953c5a9a17. 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/QZHNA2306227.