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 0x8c595d8f1190cb4f08d5691303b53fb114137b74d1fe3fd290a4356e513fefd0. 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/bf201b4f-e9b5-47db-a6dc-a52119db5ce1.json and https://artists.proofprofile.net/proofs/artist/bf201b4f-e9b5-47db-a6dc-a52119db5ce1.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 0xbfd39e31ecacff337b8c2316688dc21ccc9daddbafab944adaff11513519976f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:18:58Z), 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/QZNJY2595803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f42dc1474fcae3500a98615e9bd3c18966979b51ff01bd778921e0ea115565b. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QZNWT2015695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31498b4da982a796e7f2b67fa167dca9069e3cbf2425a5089160cab76fc73e77. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:59Z), 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/QZNWT2015696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c11306ceff90aba0fb7736bf43a85784570599e7d42af94c83afe096c299973. 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/QZNWT2015701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3524326abd27e14ec30da64edf80c82059f8539d6d2b9558995232b0d357c7d4. 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/QZNWT2015702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee1727cdc10a237e6b4ed7f614a2f096d6e89e8c6427a92e63aa2fca91adaf7. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:53:06Z), 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/QZNWZ2048568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cedf9daacba37e6f6c37f4ae47a6cf7e6a2a0105906390e922569b9df9751e7. 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/QZNWZ2048569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e92e82bc68e50291efc522b8a89eee3a4b506ea23d69c896d02e25a27739afc. 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/QZNWZ2048570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e990d5727b2c03724b788100ace10b18048c6a11d2c4e69ac73190fe99f1ef9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWZ2048572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88951abf84ca5b4d63db8947863e361a53abfdc40efddcee61dcbbb9eeb009f1. 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/QZNWZ2048574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47f1e4de792cc228aaea8ef757b09efae5d59e1d11c584d5e61c32c6a7067b0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWZ2048576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8144f8f71afb315b9ee11ea7bd556a6a57a397cf9ed87bb1f96e383bc8be3317. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZDA62105823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8829cc33f149b340a44c7482e05c757c871a77dac0b669719f1c29d37b98efe. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:03:22Z), 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/QZDQH2144126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc712d0dc96dc32c5dd0606750c1ce360d44fe14a6d94fda143c840a0a6e8a9a. 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/QZDQH2144127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4770923bc4b6b388af75ce1440548de4e92d5afe8f96356d55b51982a3992cb7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZDQH2144128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2f5d0b430e7e66cddda8fbf8fd802440cc4e267dea0eae1bad768767d50be5. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZDQH2144131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe942a7dabbcd7feb0d76a61a083d854508d520d18a238a35cba781227bec0a1b. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:34:42Z), 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/QZDQH2144132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3da10f61f94095698507f142afb1901347fb44d0dcdcc78c92a2ee1b83a8563. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZDQH2144134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb4d04ebcce2ec7fbecc303fc254cd6210d002225ecac51dd3f256b633e70a5. 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/QZDQH2162804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0399000a17a4d912928269c982698aa161e65ec35b3404fd72e81601f298f8a2. 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/QZDQH2162806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa1ee797d3a0f04271def1034a2694904e6ee56db81402174b964bab0eb79b2. 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/QZDQH2162808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd571b8313fce08c1035784c55f3d056e40592f5dac59efcbc187ed238a01c9be. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:51:46Z), 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/QZDQH2162809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8f715b468469b89de3de95f9d6f78bfe6f3beb36908db1286a1aaeef1b6df2. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:42:48Z), 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/QZDQH2162810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561d731c644391226a28f3201f1f61ca33c450d8c5ff1d1c405eb8cb96cdb377. 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/QZDQH2363568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0d8c5c4e8e45720c4edd0f10c38ee26dc9869c85aa7f5c3a3d59402a0bc206. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:30:39Z), 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/QZDQH2504137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad52028c75a14ee2c4e6171d0408f5d6269aeca8992eba72fea5f3f65030598d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDQH2504138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0d880f23f433e25de16bd622440b0e2b8d3e7040fdcc70313a301a956b32c6. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T23:00:53Z), 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/QZDQH2504139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695efb944b4afd102763581a26f79e0635bea390bf7e1661120e6137fbcfb5ae. 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/QZDQH2504149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6edea6c08f8ce36ac6c944d2d325a7856ac1a4671780b732d2603cfd7e540a. 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/QZDQH2504151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef37bec4fd0adb78ab8a1b785ed931eb1ca983e0b35e3be05f72222cb986cab. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/QZDQH2504152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7e04b69dc98307ffcd18db6d82503c53fd05bf6f4fd759d98005a0ade05bcf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDQH2504153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3048ad07849fed5d0808b7f093e29dadef22ec7e989abf5380cfaa029e74d959. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:43:32Z), 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/QZDQH2504154.