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 0x226c777f6655c872cc0ed79e0b7ca8f1321eea07038214bf1dba633e076ccf5a. 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/2d9073e0-b27e-47de-ade6-cfb2ed97457f.json and https://artists.proofprofile.net/proofs/artist/2d9073e0-b27e-47de-ade6-cfb2ed97457f.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 0xf1624e35bf8a94f84604ca16ec09807b642c739e403878ec59b3902eb2f64d36. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:11Z), 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/QZNMT2351975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205367483e2d646682336219ff9f32ef3c8d6bee6c40bf847406e9ca9d387d1f. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZNMV2382667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbe1b195d388b15d58354fab466a89e052536de3db2e69547f9363f9ec3f732. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNMV2382671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07342f3161c9c108b65c1a099b989f329e2eb40813c99d3645cd4fb1eba6d04b. 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/QZNMV2382673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904c790981c9fea9f1b56f479aacb3e85eb7849d4a28253c269b85b518a5a235. 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/QZNMV2382674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2852c5de684bbad2eeceea51749b5854fa39b3caeef055a4aa589564a7c4c247. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:05:10Z), 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/QZNMV2382675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8182889120973cb4f758a364ee26088842b2c54d5079c76c32451f7437d074b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNN22314164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7170469d12d9db3c18ad908f345e4e194036895cacd5f49b6d48c5c784218f10. 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/QZFZ42481879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92664914094571db461cb4938cf03323dea4c9b6017549231a90a8229bc44479. 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/QZL382492999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf92159169e3f38e5a57fa7c4dfad6a7f43d1046da9df837c7d2f30c847422b. 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/QZHN72430427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0d56b65fc618995fa38ad97b5a429c77f20be705e47a53ee4430b75f6f3da4. 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/QZHN72430429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a0311b065e6be159097033e56c625fbe4d7e96b151f5de189b09915a7a9efb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZHN72430433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fa1e711f7c5950777e2e46f2291595d87310d11ebc49bba45cedb97cfaa1d5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:37Z), 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/QZMWW2492502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7711e7d1d62a5227e8497ddfce67f682a1437e9b6747a398ea027b990e92f9f8. 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/QZES72543796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565822ba80d3fd46853a469ca626550c498a33502d8ec21cf4c87326682a55fe. 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/QZES72543797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb26a672efd8eeaf5e6c6c7194dce27db261a07ec10b1857957e2599fd56f03. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZES72543799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3013d31ee8724953814233141a0a6e03dfffd7da9176fc45cf8c98abe2788d4. 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/QZES72543801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31ceb5800e903db65272e3212c4bbc3550d2388adead9351c177476b53ebb07. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZES72543803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8281534fff3e73289d819bfcb657d850a1ac22fc00c5881001bfff7a302cc19e. 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/QZES72543805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86a2c39f13885e13050042e90d2eadd692c1e206cd08a961d3c5c038c4c5794. 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/QZES72543807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f55fc8b49a4dca8180f71926c7d3896a15da066348d175d1ba57dfdb0e0870. 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/QZES72543809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d66e7ea2ee8f77b68ab45d07f1908242ab5eb2780243c0e8af49885c5bd7ec. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QM24S2402044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d66e7ea2ee8f77b68ab45d07f1908242ab5eb2780243c0e8af49885c5bd7ec. 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/QM24S2402044.