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 0x9612b0a41e814546ae117c564267b912778f1bcc04be92047b6e9fd908a88487. 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/55da9335-5fec-4941-9f2a-c29380334ceb.json and https://artists.proofprofile.net/proofs/artist/55da9335-5fec-4941-9f2a-c29380334ceb.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 0xf1d37794da7ed157f4b09bc57d5ffb8d9fc401d2c21988d37d7f2a5b938ebbc8. 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/GBMA22131645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe285c4a6868ca73aeaafe8740f5a85d45100e03559e040e2f7e9f420c27e7bbe. 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/QZHN42106045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc887203518e0938ce03a5622926c22b5d8afabc53ad9715251401761f68971d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:13:28Z), 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/QZJRB2118328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3123e135d11d38117b4634e4a736f3bf182a24ab21af007f0a9aaf910b0faeb8. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:15Z), 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/QZT862186632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807bf93731a1edd006f7160bc87b55f0b7c8c72abb7cb04d76c624762f1a09e2. 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/QZNWY2136056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f1530b651a4c9b7908c1ae02da0ef7155f3c451ccee168bfb047cf05361487. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZFZ42269154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5d46e0085330e0d18b359709856cbc1f897bf783dc8af539b8c33c13d0f821. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:20:00Z), 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/QZK6N2299590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec3d108b4bffb7a6c0ab37893f838b5c63bf5c3f3ceda63ee53eba60671ac67. 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/QZHZD2254863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4712f2421e88de67d3027cbbff0b14150a06504e0759f5fbb793d71407ce14f. 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/DEAR42265706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c16e4932727a68bf7c2ff351e4a45ec5c06d2b980ed60c5f6b18b7d53e1df7c. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZTAY2276912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b5d6eb257592387b6bbdf2dcc5dbdd75acc53dfa8b4a814a3b708660870112. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZES62327336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a45936f47a0a659e83bd2230e9e2bce7837c7f1c8a0ddf8433aa2092f9ff10. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTAW2393171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9b770f51b40262594faa25c3075bc3e397fc7ca499713e1ff832f26dfc969e. 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/QZFP52442042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf97b9b3effc7bd44e47cb7929b2dcfe269428ca9e0586a0870aae818c0baa3. 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/QZDA72519509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d59cdc3125bba923d1b959067ae39c8592951f62a976a4c9f448fe6843590b. Chain 2 (Bitcoin): anchored in block 957566 (2026-07-11T12:26:02Z), 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/QZHN52538812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa18070611e0b639647201eaf2650354ff67509705cb66dfd68b7fc6f4fd20b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM8DG2552722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949185e706512523ba248d9f31541a7ffa45693dbdcad1e940e401f3b4bdf39d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QM8DG2563261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5e44c0675ccd9e09bb7240c5f96dd9afb55d254dc433238dd75ab1f317b715. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ7M2542126.