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 0xd82f68f02b215556c5d810908414be4b3d93e43de103cce83bc934c1413fe257. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6182981cbfbbfff0d1e4b7d96c5575656cfb3cbbe6ddf5bfa32a14748285884a. 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/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 0xa11e7a10cbf3cf4012e461c74493498f637da42f37e120dd1e8815d17c603ce3. 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/FRQ032216505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec011cc595afe932b0ab0f29eef6fd4b17e18d92097117b7909c8d47620b4ec. 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/FRQ032216511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e76c5df060a99f0cd45e3aebdd5d221276841096232eaad4354badf5278eeb. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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.
(Chapter Two: Interzone) Emotional Disease
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3404d29dafa7f05605b9a24c0a0dd74a7694452890f8f86848438464153aed6. 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/GBDCA2003660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241fd1279c1eb76cc7136abde8ee830cc3c51e327962c19d6edada35bd2d012e. 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/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 0x009ae45a61b6862f3da8c029c7a8188cad27039d9018b11484c4671a4187ee4d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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 0x80316aa2aa6c45579099d32f9a691ae8370abb4354bba3e3ad9ce7e3f8e1ea01. 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/FRR641700062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a83d06820e2de2d44fd6e1ba1bb1c3c1c672b9ac7b221cfd1cf4559897e64be. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:47:32Z), 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 0xdb5548cc84d923effdfa2904a1dd26fae0e6b08f173ad910ef2431f42bf9b0d4. 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/FRQ032216502.