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 0xca9241b66fa916b81999a355a57c9e1316d896e83ad4bd21b3dc00b6642a9eb2. 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/8831cada-cebe-457b-a428-085b926f92e1.json and https://artists.proofprofile.net/proofs/artist/8831cada-cebe-457b-a428-085b926f92e1.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 0x3c020cb11ea33b54f4df38854d892031fef8e2d9c920365f5ef2c4ebbf0af2a5. 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/DEY472474265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1278e2d314cc679fec929f9e96d806a3454c148dd95714cdfb604aa85a74b044. 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/DEY472474119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2496ed5df1ca0d245af9c266fa57dc1aa366a7261d09ecfa5f711676d311c1cc. 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/DEY472474024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fe8032569a5c0f0c4be42d8f57d61a041e266ca7008dfb5e3a90364850dba9. 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/TCAIF2420929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2496ed5df1ca0d245af9c266fa57dc1aa366a7261d09ecfa5f711676d311c1cc. 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/DEY472474024.
millinaissance III: Our Ancestors Journey
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dd388e739cfd62aaf058d7937cf6a284a5201a5f61a8f0d065292d68c317bf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZHN82233634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2c0558f71198e789e7e61ea0dfa7525563673d3f9f992dd4460ac31065ede2. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QZHN82233635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6482cb8e8cc8d0c74886c4ded6c36b7e744372e071f24dcf89e3886b196b77bc. 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/QZHN82233636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5353a1f572e71f955a583e075847deb617130832c1bf7ec859fcd9c0a18922. 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/QZHN82233637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5c4e3ec8b4b46e3bac57251626e6044b3b0a3b7c1806d18ce99965e524575e. 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/QZHN62280075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9994d95f277c9dba2150348911cc1ac175f7d9a7bf82d3cb1f90459d0f4c602b. 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/QZHN82233638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9a0bf459ef09d1aa7138f1911767c76b43c4a8b7240442fecce0f19256490b. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QZHN82233639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ef36ddbb43d4f4e49da7811695321a8d87e8cc1de8283ca985f2e591b668bf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZHN82233640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b61dd35ca2fb9696cfafbe291994d30a5ed872a6d19a091728d16bd9221591b. 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/QZHN62159116.