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 0x7a814f18d2b20974af7a22947382c88a9bbd9e0a7d002319d601326ff2aa5d66. 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/3fce43a0-f47e-42ac-8aec-f243e4dd8a9f.json and https://artists.proofprofile.net/proofs/artist/3fce43a0-f47e-42ac-8aec-f243e4dd8a9f.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 0x76d41e0fee71a11fd28fbff223bbda498163cac48834d429383a62167ffd03bb. 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/QZHN72037887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c02999a5465465cdb135fee8d0e29f2aad2ccd43d27f20224a6be0701a4b505. 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/QZHN72039313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ea07c05dfbc13581be521345a9b1d6d6d0f4adb476aab9ba7f54fbe4d5e554. 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/QZFYY2142588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff5190222263b0b51c52f4b6c63a47393b5e3a50b64ac16d4f70743f497f08b. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZFYY2142590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf73020c71263369d40497e6b079f4135ad98eb8e3463a428f59e59e0bca2ce5. 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/QZFYY2142592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a53eb9ff5cbda9c0a8c959310c7d844a08fe8b64786f09ad9546bdde8288f5a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:40:09Z), 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/QZFYY2142593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0c28b023eae062d5988fff2516edae20e78596f1483f1f5ee96d48583e69aa. 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/QZFYY2142595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dfb78f604e1f1f3ab86dd32a22350350a8af070b80450e29101e400a45b023. 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/QZRP52188254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f587a933381558111e522fc6aa28f066a7fb234468640994cafca714f21f86e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZRP52188257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd7ccc22e8de8cb180377f1a5315682c3041dd304d045606a81419b5b9cda94. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZK6J2190688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e3209be304a3f5aff4cb1bb836187a172e70ad560a31475baa890adb50ecf5. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:55:41Z), 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/QZNWQ2088630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6434b41dfc80d8bc65f85f095adf72995d7ddb20f411677592c268a8400d5c47. 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/QZFYZ2280323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8fe8fee9bba2a01f5615d10dd0475c4432e0f42f736aeca6308643567c5d58. 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/QZHN72221017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0bc9a3e9d44526a47cb47713566ff14cb745dbd44674c1bb147c8842b23711. 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/QZHN72278689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b4a27c10d7378551eee93c5386771a1d5f34bd65ad1521c6139143d1273531. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:53:41Z), 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/QZNWQ2252464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f224d79f84b10683db1c405c2fd506e3f033b27d277490e662de47707dba437. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:38:11Z), 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/QZES62314643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc6512715e751fd8b7269a97b3e388a927f37a9c07267d6d72e389413580db6. 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/QZES62314644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376bc457bfc26f34268f1474b4b865bebca2fc7d16ad24c15c5d4233fbb7fbad. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZES62314645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68239d0bce4a2207d88030034391f5aaa85b2e0a43a7293c55420997454482c9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:54:48Z), 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/QZFYZ2327772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf158c4c552052c6afd2a0744aa9dc7aa21bc0999594568b9b6d5389e79ecd58. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZHN42219530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809d4c67aba91a776d4351810137f634642283cae3613b715ac67f3e67e4c791. 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/QZES62314648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54370380605892a2cc967574bbe5869e7397b24c45090aa503282b63155f048b. 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/QZK6L2323456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb30a5e26d9d9765382cfe1d550dca55419c9a722dab95169ec2967182204892. 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/QZFZ22457704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6e994210c0f34ad422ddcfd07a6c683bccfbac8c86ac77b7889e099d81bc4e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NL3GQ2100459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e3cdf59cf35c75da99db9925e3e23de644417fca68817a819c590a1e21f0ae. 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/NLZ7B2200250.