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 0x65c624f6d94840cadeb733c7a95384b390dfd8bce47e2087895be291a485dbd8. 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/362920a5-802e-4f0e-92fd-bceaf4021d23.json and https://artists.proofprofile.net/proofs/artist/362920a5-802e-4f0e-92fd-bceaf4021d23.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 0xee0846125721ed894b8552e44ea386e5bdcff99fdfd5193d93c82f0b66194c51. 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/GBT9G1100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451bd9ad978e10ef59ad9933ba9500ac991abf5919c5426ec3865eb256dc7c53. 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/GBT9G1100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34c36b6bdaa6361216e7c52a58adc6fba7a0b18ec8a3bf8d64f298601e705f1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBT9G1100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f8db1d2d4019d61d2dbe8283750b72ac0b77746c219afd2fb3fea8451a94ee. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/GBT9G1100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587f205b3261580ab93e78d85810c23fd833dbc2f7737c33bd9e65d765cdef95. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:35:32Z), 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/GBT9G1100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0602b9e9573f66c506ec1a25a8b805fab656c8cafdf08b3e625ed38c767990. 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/GBT9G1100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2231a566c11e4f381078df6a694b80792532f73c8b8ad88cf81f1d967cad0fff. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GBT9G1100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849f508fd23075fe247c85b2b16770a00498a18bca31831ad768c7be48e0e222. 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/GBS8U1230001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e0b4f72e66df9a6309215526ac8e621a60cb3c7995bca9526f73e002cada10. 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/QM23X1610093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebe3eedd75d1cc69ddaf6aa13a490544bcaee8c1e0298a1c1c86e917be442b5. 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/QM23X1610094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a03a00ec940818986ef83fe47f9f4671e659fc15c09ad7f7469817e407f262. 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/QM23X1610095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd137a785871c22338e5b6c01bd7f12fdcb2e1b8922f9be0a99c84bd29d4624fd. 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/QM23X1610096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180c186f500c77be61560bd6faa218128f62a984a5f2986dd43adf447a201ca1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM23X1610098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff928ca26d70c7a6c9cb42b23369bd8916d5b860487bbd451785fc81326ea158. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFYY1916895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce42a7aea4114f4945cb460f6d32c002e9e7a733c6b7d4543f04285278645bee. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:57:21Z), 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/QZES92063654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42da66ca5fe110db18cd44ff9654f2c0da0641b0af903969bcf62942d162dad. 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/QZES92063655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa02c8c845e464840bf803575ea7d59dfe71466a4541df08580d6b168b6b8d9. 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/QZES92063657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8938a7d6a2b4aa5ea1352c8f801b9b64b07d7c82d6afd13486b81bf7429e68fb. 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/QZK6M2063097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37875b63b54972098e89093811d7d1ba8c6cc72e052af3150d6a4578f69c2759. 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/QZK6M2063098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b37fffff1e87a766175c3e8bd8280998639634f51c401b79d216ccd3cfb8ae7. 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/QZK6M2063100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c4d85d7c468d723c2147ee41f8bed3b835103ddaf298825fdd532d55e20973. 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/QZK6M2063101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ba9621430a4647fe6ec285ea00d45553a35fa9dc54d59020f0860266930d19. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZK6M2063102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0277a2bafb76a10b4e703aa1ec14aff5d577432cba073aba5fa2273d4e633203. 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/QZK6M2063103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198df5214ef11a7a82cad8bf4c64a3c564b318f178271ec3a5dba197432530df. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZK6M2063104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5a44b4402fb7857081d7190ca4e868e23e07ad267d34788e3da605f60752b9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ72389866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20d81965d544ed06a5a894713c34e45ed38d94f7a850a90023afc23207ef05e. 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/QZFZ72389867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d15b0adabaa5c4e9c43b036a56a062a34d0d56b5ef7331a27d68cd6932b7ee. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ72389870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38082655cb6edc728e20d50960d07533f712fc275fba4b2610026ed995ed4d0. 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/QZFZ72389871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00becb8abea1a926ad37e9c3594416b8f13706cd4f9cc22a47fb81ad5e616d1b. 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/QZFZ72389872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63084a320815b06e5d4f7e32d96e655fbc70dc78dd1ff215555882867720710c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:20:03Z), 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/QZFZ72389873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52883788cfde66ac095bc58eac2b04af484d83fa9c4ac13bc980e6eca10f7ee. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:29Z), 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/QZFZ72389864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e03eced79b6faa51f25db92dd6f4ed6c655f131b4a81f72b69d92f79b850a4b. 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/QZFZ72389865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5a44b4402fb7857081d7190ca4e868e23e07ad267d34788e3da605f60752b9. 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/QZFZ72389866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20d81965d544ed06a5a894713c34e45ed38d94f7a850a90023afc23207ef05e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZFZ72389867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a786b3bda32ac7218ce994fe632c6372d485bb52f4510fff9cc39d4c792105. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:59:14Z), 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/QZFZ72389868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e392f45f50b2b5e6b57c981045c2262280528f5264e0a6bd39e12619066fc92. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZFZ72389869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d15b0adabaa5c4e9c43b036a56a062a34d0d56b5ef7331a27d68cd6932b7ee. 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/QZFZ72389870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38082655cb6edc728e20d50960d07533f712fc275fba4b2610026ed995ed4d0. 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/QZFZ72389871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00becb8abea1a926ad37e9c3594416b8f13706cd4f9cc22a47fb81ad5e616d1b. 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/QZFZ72389872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63084a320815b06e5d4f7e32d96e655fbc70dc78dd1ff215555882867720710c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZFZ72389873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba4c739a8a2ed290e5240fca8b10d6f32d1933a037037d59a86713106a375a6. 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/QZTB32335378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5d8899944ede7f783a9e7a751d96a9e47a78f43a62c91cc9b7688e6cf77dd9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB32335379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72dbfb8e5c93fa518a306b5cd7e1c797480d8651ede554dd15b0a0f2173ccbf. 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/QZTB32335380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99f7f0d94308c920902accdf8c64b50a947da29a3a8b8f205b4f3a3f735cfab. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTB32335381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cded4e93c658b2fc874e7bc342898a6cf7e2f3b386fcbcfd50d1c9f9c130cb2. 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/USHM21959021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89277e94b3b6f12741e4561bf9b5b74d17cee35208a8b1a407aabe71ecbcf868. 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/GBS8U1250001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1500dad8cdeef748727746dd3a47992da13011f43eb314feaa44f235e9412f. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QMJFD2008301.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch