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 0xb910d0b9177046408a7800d6b3fa418a48e5cc5949e64cc23cc7899019b1fe75. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10f6df2d-93a0-4fa5-93f1-c2f0e4bf2914.json and https://artists.proofprofile.net/proofs/artist/10f6df2d-93a0-4fa5-93f1-c2f0e4bf2914.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 0x5f962a33238c79a9492a20f06392f38ff0e6e762c4e2b9eae10d63be4dff0543. 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/GBKQU1818672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcdb14a03628346e9217893e821aa65aff337e5a2a1d67d5b8a1917422856ce. 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/GBKQU1863592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64a09ceb9f8e2efdd6891ab3cb7f7d9fc314e7c5d239f962e93458f7a129ebd. 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/GBKQU1863593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269ed12fe458c8f0b67e50ade6b3bb7e17ac0a92bcb3892e8b311fd452a763e2. 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/GBKQU1863595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc9a9eab930c03403f2c4915319499dd78467156cbbddfd31d6892d2af0a01c. 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/GBKQU2080909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09df2a37524b8c4405337fc9ad96afc9885c1c72a947ab636c0912506c5f426b. 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/GBKQU2080912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ad975413d1f809128fc385cceb2d2859fdff923100fae04165995bfb4f79b9. 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/GBKQU2080920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeccd4ac405c59952fc1be0b9601938ce15be65c287483faa886f7b6728aa351. 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/GBKQU2080926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21889f7e1593459619d469b7bbd248713fc20a403e35b2f79b307bc45ade3890. 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/GBLV61519310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ada2cb0ef627c310849870a009c2c179bbb8690d00c812cefe914c69c95e417. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU1902066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e503be97c9c126ce2806fecc38b58fab0af487a6a5f6c61ed3db387f527cae. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBKQU1731314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180aad6f09975d69ac6bc6f82f24db8adab49e3de1018699a287f3de7a5e82f7. 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/GBLV61412453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c5306907c985fe3416c2a498911532541f0e4e3dafaf61def0d411a46b29fb. 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/GBKQU1502116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd2146b117d28a537b12ee6e47e023dbccdbed8a4ee12242e878f21aca07b07. 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/GBKQU1502117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27056b700c6ad7f988b699f06a1bf9aae06cb0d9f9ee5940f620e86736433405. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBKQU1502118.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd140f49241644cdc926da3adaf1200329e5c6101beb9dbdb806c13575d06582d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU1777902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971e0d54e30e088261976793a54f7fe8f9a38b5b6f6560fbf0461d2806e96760. 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/GBKQU1777903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1f4dedb47ffc74ff5910a61bc907404c17d61875692b4bef4cc9f06e82f571. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBKQU1777904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c39a9e05659e8a47c80912289e7e80ade4e7743e9732f7dce4070fa423917e. 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/GBFBC1501333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42f1bf7253330f5106a4b8dd1c63ff06eb768924c59e19efbe7502dbf5459f0. 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/GBFBC1501334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3366291d8764728ad92e14c9070f26744e99756a45417bf13bd43646dfafc92a. 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/GBFBC1501331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101bd53a5e5d2326ccd3dc3b16f9cd487ca2e5d66c941c921b21e26399b336dd. 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/FR2X41851860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2a9aa7c0f680ed1233a9fd01f4052eb4ab9dd3411ca993bfdc60965a7c6408. 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/FR2X41851861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600ef0eb868427336dd54548bdd8cf7d4f92cee7cdecf4cad20eb80e2e7a8a5e. 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/FR2X41851862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd8e651c0cd103779f2b337c5c0b8867d4b92de8f7fb8979d2886e4a196ef4c. 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/FR2X41851865.
Nothing But... Deep House Essentials, Vol. 07