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 0x7c669ec6fcab7005926794fb44a911286e2fce7bfa2c39f1a62ad4d9e60e74e8. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d8f546a-1636-4d75-9199-8e92c2b769ea.json and https://artists.proofprofile.net/proofs/artist/3d8f546a-1636-4d75-9199-8e92c2b769ea.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 0x61fee1d54f8e6fcbf76ee1e22399c301cf31467aef379dc32139a29daccf6a9b. 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/QM7281917843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260baa7ea1a84ff84705eae9becef67481d6619d2cb7c30f23d86699bc3778ca. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FRX201902381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764d8a6bc93bb42cf0784ab21a564bce02e519d153ba15df5cf30478dcdf6266. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX281929401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf62adc9a5d4e57a892a730da67d3b74956f12dbafa526bf57ea3be19a88460. 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/FRX281929405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fcb53ef7095f4c559c693d435abaa3a68d028e892421a1115ca7efe2bd7c09. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHZ52146052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a377089c0dfc6d5bae095df5bfb8bb26de00fe15ca52842f0ebd388909a2e1. 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/QZHZ42289987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dd87f6d1a6e786ffe2fc62fe0658e83c2dfa4b51bc0661295520e08c7c48af. 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/QZGLM2221570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b09b3a0e8d8fbe408c15298f66fe917ab94532d5703f26c83c01164df80cdf0. 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/QZHZ32213545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a416e1a0c0ab3b595314a000f7986c327a5a8f2d5747891baa5eaf0bc9a90e0. 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/QZHZ42289992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f101a36a8a230256029436d09d1190e96395dd1e72e329e2cd03791b35aefc7. 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/QM3DF2251984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf02cf728bc4751e655a0bc3f17d73a7b9c4a12b106abe7044f8b7733e38fd35. 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/GX38U2388312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f600dd5486dda3f0d0baebe723de2d7fa1c1015930cb4b003cfd0492e5f28eb. 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/QZWDD2296639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b09b3a0e8d8fbe408c15298f66fe917ab94532d5703f26c83c01164df80cdf0. 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/QZHZ32213545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dd87f6d1a6e786ffe2fc62fe0658e83c2dfa4b51bc0661295520e08c7c48af. 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/QZGLM2221570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01929ea7f4fdf3931ee616f501c1b2518ec0809d55474262a03802d81f964ad. 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/QZFYY2046166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68eea9d1c5bea6b15ec3d5b6a97f718b9663efdde4741ff04cc275b52d8d5f4. 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/QZNWR2063268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5afa7c70b34a0c9d8d7f18d318d4d72fdebae6986f29c38f0a402851be5b663. 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/QZNWR2063270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5d65fd8ebcd9906bd6353095ba9b5386b4099a3183523e520a77b72bebc976. 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/QZDA62099269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5d65fd8ebcd9906bd6353095ba9b5386b4099a3183523e520a77b72bebc976. 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/QZDA62099269.