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 0xb7548b3e34d73948db3f86cf8ac277760606f50e8421bbd3b12e6046744901ff. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff9750b5-7448-426a-a268-96c22ffde2e0.json and https://artists.proofprofile.net/proofs/artist/ff9750b5-7448-426a-a268-96c22ffde2e0.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 0xa14bf4d0d034d282236ea44d2d97e8de8bba96f1d5cce066edfc6c15642d6c39. 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/HUAC60600723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485a8509924274ff32cd26b9b9cc386be6dbc27440bc261c8f9cc768af6a319d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HUAC60600422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245d2a8581ff79887f9c0bfc0566457f7c2779b2fe97d610e1c84cac79dfa273. 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/HUAC60600726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c17f291e7e9012f71a9423750f0b6325ed89d372db97d0321fd01becc9a98d. 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/HUAC60600730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7e1310eb419783539464b61bc9d4ba6840e034415fb2d3e8f37234470ca600. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HUAC60502572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fd9f2cef30561aa35c91f1358c408cbaca44db3e622784e3c9978eeea284c8. 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/HUAC60502573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a41a2da8452b067edd94d5f08099054858ef06255d4baddb46596dc62d69e66. 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/HUAC60502574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8f6a543d96ffb876658142a820b3041883a5f0340febc5ca6e6cdfd3dccefc. 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/HUAC60502575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0352b418a1457acebbaa5a09bc3720ecf48444dd6b22c92ce0a3e0d27c6d1580. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/HUAC60502576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa043b0aa08a29853e5c369b9ddecc22d44bf97c6e0cfde23519bd4dd40f030f6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HUAC60502579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e166dced0aa197eb24aa5164897a1c39edf9fd3b12796258801969e3ec13c8. 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/HUAC60700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14bf4d0d034d282236ea44d2d97e8de8bba96f1d5cce066edfc6c15642d6c39. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HUAC60600723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639f67772b247ecfac6f78fa61d2f89c14e2238eedcf6a408687b80f8babc6ec. 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/HUAC60600291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b6820b71fd4ba2d722dcf577bf9b8d0d7ec5b0e96cd94952bb43c43387b1bc. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/HUAC61300461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8f6a543d96ffb876658142a820b3041883a5f0340febc5ca6e6cdfd3dccefc. 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/HUAC60502575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe172db730d407340a1f93e3f35ce248e859ed3a8c7039c29d935c1ad2e917936. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HUAC61100227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd607fc9bb86b0a982139ae4df985339ee8ef30d45a434b0c4b4a43f230449f0f. 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/HUAC60600186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafd0d29c795a025d71f29a5a68ccaaf4dcfb5af32562ee4c5da085e0f8954ea. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HUAC60700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0219927195243e687bfbf4e288e6981e8fd549e39a585655a3ed0b0a865d7575. 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/HUAC61100307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe833a5de919cd0da53aee29c23cd37115172205a4dd19d2a9d60283bb05ebd48. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HUAC61100226.