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 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 0xd82f68f02b215556c5d810908414be4b3d93e43de103cce83bc934c1413fe257. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76be8847-593e-45d0-babc-c4a14a3be181.json and https://artists.proofprofile.net/proofs/artist/76be8847-593e-45d0-babc-c4a14a3be181.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 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 0x6182981cbfbbfff0d1e4b7d96c5575656cfb3cbbe6ddf5bfa32a14748285884a. 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/FRQ032216501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5548cc84d923effdfa2904a1dd26fae0e6b08f173ad910ef2431f42bf9b0d4. 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/FRQ032216502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6803eb947ada9eac38930d13f4029c2379f0143cce0a3881ff549e315ce9d9d1. 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/FRQ032216503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c92259b8cb5a1d0264397897ed991ce1d7000a0c061611e5a9865ddff63e183. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FRQ032216504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11e7a10cbf3cf4012e461c74493498f637da42f37e120dd1e8815d17c603ce3. 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/FRQ032216505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21c173fd2c7dd0cb6ae351d48be4d2cbe980c51a66e89bb18e9b771391db058. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRQ032216506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9569c34676be7858479a150376c4d7d07a7315cd6a7dbf58b910d64917a2bc. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FRQ032216507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc224ca1db266b814ec9c846e9e2554320c1f5e69b1796feea1d6ffc64cd7890. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRQ032216508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ff6c94f3c7376f1ec134ff31a3db5c49d09616655e3167a083c9a227e5e20f. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/FRQ032216510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec011cc595afe932b0ab0f29eef6fd4b17e18d92097117b7909c8d47620b4ec. 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/FRQ032216511.
(Chapter One: Every Word Has to Be Told) Pale Dream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28be39e1764c2c0d9de9d0fe030ab0c5f97c40f4325508943b1daf998d1e544c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBDCA2003656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e76c5df060a99f0cd45e3aebdd5d221276841096232eaad4354badf5278eeb. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/GBDCA2003657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85a98e06d345ce773d2799c7bacb9f27e2ef4880f73ebebba9ca84dcc9918a7. 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/GBDCA2003658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b99f333163c3dc2be561b1fc98d35c260157260d2da4335d5a793c16ecc4c2. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBDCA2003659.
(Chapter Two: Interzone) Emotional Disease
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3404d29dafa7f05605b9a24c0a0dd74a7694452890f8f86848438464153aed6. 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/GBDCA2003660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1997b3026cfa5b4d64216cc07fe7229e9b5a85b2a7cc3462c1c797c8405cabd. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBDCA2003661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a9cc647c135fddba31718d90bec4ffe996d1a3b1fb87f1cf4d9f72f85e9b7d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBDCA2003662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6da0269d9144bae07a80215f4cf2c3018a97c6b51c710bfd51138016c0a280. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBDCA2003664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53446208659794c33507a9c0bc5b6b32b20be98c1091ce8b301e598165a39e1. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/FRR641700054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241fd1279c1eb76cc7136abde8ee830cc3c51e327962c19d6edada35bd2d012e. 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/FRR641700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c422be4fcf5796c9067fcf24c3b81d233eb1353baf63dd4d2bbb765117f860c. 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/FRR641700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ba3f419931a5ee831cac69d9d8add4077a230bbe23fcde7c5a8aaa310b6fe4. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FRR641700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009ae45a61b6862f3da8c029c7a8188cad27039d9018b11484c4671a4187ee4d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRR641700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e77df8ede937446ae34ae8b5321114b696cf16d22b03d47f7011dd0518822d. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/FRR641700059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6349872c05932514722e915594f904c64a05bb21eedb2cc92f56d6f8b7a0c4ee. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FRR641700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a83d06820e2de2d44fd6e1ba1bb1c3c1c672b9ac7b221cfd1cf4559897e64be. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/FRR641700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80316aa2aa6c45579099d32f9a691ae8370abb4354bba3e3ad9ce7e3f8e1ea01. 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/FRR641700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dc990e6972a137421e4fb92d23d6895c4e0fd1a36461792e7af6bbfeb80040. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FRR641700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5548cc84d923effdfa2904a1dd26fae0e6b08f173ad910ef2431f42bf9b0d4. 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/FRQ032216502.