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 0x16af5fe082bc477c8f83dd5865298ad8c7d328bfdf6245e7af529f0102ffcc05. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c55d5a1-c423-4e8e-b562-10c344901fdc.json and https://artists.proofprofile.net/proofs/artist/8c55d5a1-c423-4e8e-b562-10c344901fdc.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 0xf54893430cfaf42a8be3b4f0ee8cbe2c895b5029c9eaf2d5a74ce4944de250d0. 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/SEYQH1400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f4a91658ede32e0a66c50c12dcf2da7269a649a743de8bda04db899777e5fb. 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/SEVMM0904004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc790fa0491b39e77678a4eccea58160748226366c25049014708f9b6cae47efe. 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/SEWAY2400402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6990b364bddf5a0468df26de1786bda9c4bf470014161ab67067746c6cfd29. 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/SEWAY2400403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9341c5b14b0092e4a0761f7deba0a23f332131b8e18b2edae726e5765a214742. 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/SEWAY2400404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44337154a8de55aed75947310caaf7bd629b3447996af4e2209ad171e3de5883. 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/SEWAY2400405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2616b6e3acfd0b2eba991a9d37cd411055bdff55d3fb0cf8b019e1034fbe0dc7. 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/SEWAY2400409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955eb750e5761a580a3dcda1908fdaa966219de246bf184543d32e0a04a3da1d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SEWAY2400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f758439d077afdead6ecf096ae00a58c7734627bae841bd4dba82f3709c1e33. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/SEWAY2400406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd193e35ae73d592e992598b7cdec33ae178f01807bc7b17565b788d6735edbf. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/SEWAY2400408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46bd551cce8f394df48ee2383b438aa4ef2d52b9a801f2784a1b980b901ad8a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/SEWAY2400411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f34b775719619f65c7ba68d2d98381d15bca1de6ef271c612a9537929c58fb1. 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/SEWAY2200806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf386574d80ec6630cb32142308892c34982f47815e1400b566fdaf80e291a3a0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SEWAY2200807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9255d1784a5b92c466cb0ff8946ffc0e918a091b3f437f6f46bba1c436c00c75. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/SEWAY2200808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3407acde98173db26b7c187d9acc394d695490b162e502e188217825bf4c1e9. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/SEWAY2200809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fb012c0a7338b423dffafadf82dc5ea8ee4df9866044512e5234b4a1330b54. 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/SEWAY1900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe739beb71c2297812e2919fa69118c5ecaaf8cf07bd00957f216e813151b547. 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/SEWAY1900212.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d109114bf50d3cad22ebb0c52540f3cbaf34eaa53c1f79569d5dc2c78effc7. 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/SEWAY1300401.