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 0x50776c9489d9170b07248b508d728ac7331e934719d504e3e138c3e10798105f. 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/df7b1a45-61e3-4ed2-972b-1b8b270a87b8.json and https://artists.proofprofile.net/proofs/artist/df7b1a45-61e3-4ed2-972b-1b8b270a87b8.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 0x80126a6ca20e87448e0a14f897892ad6f953258159d1840b448463e5529411ad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6N22273424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50470fecf561c1a544ffe5a3a83093576ee1db43b2b6f58944080ee7abd24cd2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6N22282283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05ec911af128605681db009516a7f842c9a747a7ff38e2a9f2abbba0516f2f6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMBZ92255289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80126a6ca20e87448e0a14f897892ad6f953258159d1840b448463e5529411ad. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM6N22273424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50470fecf561c1a544ffe5a3a83093576ee1db43b2b6f58944080ee7abd24cd2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM6N22282283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5d60b29418e907dcecbb7bb590770462ac0058c236f747b6589904105416f7. 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/DEZ651721451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02d9e86e445100c2fb06bdf9505406b2f401fab8524634282b5d32e7485f88b. 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/GB4HG1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568cabfa55ec01d689d27142f26d27d504a63fc756f3ea0693f4bea91fb2630e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GB4HG1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260059ce3990cfff285689ba3b48ad2f809c8d8093e1a4b2330a8efde91a90fb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GB4HG1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa437883b2d49d0427e2d652a222ea2402f19c4e4ba7782b8747e99a0bb55b3c2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GB4HG1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4401f400dd4593d9fdbe86dd34f01447d48642c393b6b8e544bab46eba329fcd. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GB4HG1600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43d07f53adc6b1fc028abe9aae336b9d4a645f908daa8b2f5e836bbd9528501. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKQD91600401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1fb369fb643f3839e201879e51cb798e2897008dc4236241955313e94e0216. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKQD91600402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b03128449dcd7a344d3b5ee48bad1b00b53b18bbdd87d475c839521542651fb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DKQD91600403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826751b3f29e6afcc9b5ffea0f25efca9aac3300ee2ae50bb9c50be569ffd5bc. 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/DKQD91600404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b7cb8eb796c03d01718ebcb3ec1a210af0d10033b289c543877af92f625cea. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DKQD91600405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2828f0f5c297c1457f1d2bf4b7b5f64a7b8969c1e7bd4403221e3e00e634d428. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKB8U1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29803cd07437bc5c22630862007633b602dd74c7b32734c30985c8d78aa576a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKB8U1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b84d10542f2b731bfb418c0d69c2113c12e19d39645b178555ed00f6a7a78c. 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/UKB8U1500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688639d0fd1f35cb8b411c3984fd27fd402aaf390140df1ef3fe09d4e78ab80b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKB8U1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3799aca3ef23b8c0313efc74c11a4e170f5718651ad51ee4416ecfcffb478f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GB4HG1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c1e8fa6bc46dcf23a3ffa4d2f761875fd7573612aae18a31586c10f3cd8732. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB4HG1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2d642d1f2872b0f15d722376bbf7748b6b5cafaf534972791cabdd5dfa888c. 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/GB4HG1500005.