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 0x8041c6110ea364a7ebb1128755c1e30bdf68a9c9489a83c6c31603acaad34fa3. 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/f75bf93e-d09c-4806-9520-53548a3145da.json and https://artists.proofprofile.net/proofs/artist/f75bf93e-d09c-4806-9520-53548a3145da.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 0x0c866f083afde7952aa9f8fdfd5fa5150356bebf8cca5a011d7dc939c3baabfb. 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/TCADU1810769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8843eaf08c6d8a2ede8998b356e1b445baddeef0ef1914bd8ff03b4606b5e92. 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/TCADU1810787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8062322a381c16fb586aace2d499976f2b85a982a42213e16293dbe628f1c0e4. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/TCADU1810798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff0bebe73480ccec937a9b338ae254328f72c658fc091ffd797b62bd800e595. 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/TCAEA1961531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca35a028f3aef18e696a33f028127e4a53234f049419c3039aa035615cefe61b. 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/TCAEA1961540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1727bff6412b66cc678fff6b6a5314d009ded0b664c00ee092cd6d9be8007030. 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/TCAEA1824363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98035749415c9ca2390ad9c81a88ef2239b6a47bc780f474c116fee4c1909bc9. 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/TCAEE1993292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cddea017071896c7e9fbc9b782b402c28873cbbc491ff10e2d810d958eda90b. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:22:18Z), 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/TCAEE1993293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbd836f1582e3b0f4a6c23e2b691a9a8ad33afcaea4ee139ebd5941cc7417ae. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCAEK1907997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01af81ec509d71a07f4605ebd87d1b4294f72b2df3293a352b9d34c85926d62a. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/TCAEK1907998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c5019da20e91eee1b1e533bc66cb20a2ee942299ceb8c841d8a4ea1569e081. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:00Z), 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/TCAEK1963708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4768fb756591adb26ee595f91e3663dbe0f3b48c2067c6ebbbe74d35f57b6b. 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/TCAEK1963719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dd5d799f7e30aed54f7fb76f1ca0f31fcb78337d551df6ad64f524b080414e. 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/TCAEK1963723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fce025147e6f0df853d10269f483d29afcfc7d72ef091594cb5c76889efcd2. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCAEP2087601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbe50790520b354e9b271e73e149ce52760db162b5050b0dbdbc2d18f898ad0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:56:37Z), 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/QZFZ42069789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350aad2c1558983379b06328309eea0fff7834d6527a043c8615dade7f0bcbd4. 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/QZHNB2041006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7b3125d5b43ed1b93c1ac79d10548a3d7aaccff2804164437e84589bc75ebd. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZHNB2041007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f9b303f472969a577c07d226a39f72079480ebebc0951e3a31732e157efb4c. 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/QMFME2013853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dd72fafa90a35b3ecddfffb22479a3a18c74c5e71388e07ebe0fdc55eeda61. 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/QM4TX2106167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed2a591b45bbbdb65d3eeddd70452a6a2c5bc0e3df600f9df1b69c8037dc039. 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/QM4TX2156171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365b6e09c4bda40bbfb5b381ef838d6451cf24ee3b2171765b660d21b436de73. 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/QMFME2150675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dd72fafa90a35b3ecddfffb22479a3a18c74c5e71388e07ebe0fdc55eeda61. 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/QM4TX2106167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b78b06aca734b6de1b8f4457197b6d926aa2424510f8cf632167bddabfbe0d. 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/QM6N22128416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619eb0e4b99573738cb9478581834a77d2ccf94c9fd9916bb4c1c0fd576b8493. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:02:53Z), 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/QM6N22128429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443d4a3c7d97209662fbf1225702dfc5a399567ddf754b45fb8d911921af81f9. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QM6N22128460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383960d9e2419fca8cea2b04ce7fd0fc240356b761d01beb9cf885c09e7802ff. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM4TW2207215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3edc3a2cb814ed39f61e73a756c1474dc6f89c1231d7c303378a5130fa338b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6P42226970.