Plaid () may refer to: Fabric A synonym for tartan cloth, primarily in North American English Full plaid, a cloth blanket or mantle, made with a tartan or checked pattern, wrapped around the wai
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 0xdafd87cd0f2d9d31d3c221b9a3fb92780dc9f80cc1d225fc97db4e9eae378fb6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3c4ff7f-10d2-4a22-9713-a98e6fe04811.json and https://artists.proofprofile.net/proofs/artist/c3c4ff7f-10d2-4a22-9713-a98e6fe04811.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 0x62f83ef2d20748c26342234c31bd6040aab90bf9cff2387c6c3df49fafdd0331. 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/GBBPW1900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5402c79852c04259153d715a6ec105bd6a6f2c50cf2d54897987e95aaae44849. 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/US3D32408702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809a8f9bd7ecaa19d74e4b2513ac1d880542f1405ac5b737b1ff30c433713162. 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/GBBPW2200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1e3826e416257eb78a40f9a4c733001ee28789447a1db134b32266c62bef29. 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/GBBPW2200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f5fb49662f4c54853cd288212f188898934d70d841c163113012cdb3573364. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBPW2200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a552d08e40871b0d6dfdd16fd899f28461717ec3f3fae2e61039abbdbbb3a51. 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/GBBPW1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550bfbef6fa7ff7e7ca556b9ec92f0212a00ede572b8a0e26077ce4aa5abba4a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW1500318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f6336baeb284eff65f1fb694b706bcff4a0f4510acae1d4b4bc561b1ce5b15. 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/GBBPW1500320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c888f59bee8f777bbe911c083de96a261278a03a26519c450b5903dfaafb96. 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/GBBPW1500322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdfdd4568a4586611aa71007428703732a8d6dcbea1bb6199989077a72d2682. 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/GBBPW1500324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac195a1ca998a7fd391b23a5af630322766caf56b13155a03cf78843c0eb7a6. 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/GBBPW1500329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddab33aa1cb043f8234ed97965ee00e17d0a019c3ae8d0b279ed3ca374e3c9d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBPW1400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9005b9602f4327f197b278255128adfd155c4b319d3015780c642cf24dc4f69e. 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/GBBPW0100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8f7522409ec1512c6fb30b0b9aad2cfded81d5f04e36839bf4e23e4eabad6f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBBPW0100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a8ad1e4bb39aa1ddf24b38ec206f7dd2f50e7bf02abbaee5465edfcfc8d475. 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/GBBPW0100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfda75986eda79cae6e4c9f0fbf4519d62dc8e75b486d4dd2c259f389cf9724a. 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/GBBPW0100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd336a85b6f9a7a3a799e02f085548de045a93f6a5e40f46d81ceae056a3db8a1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBPW0100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38fb315a7496630f469e33341cb0ac2161c667fac7f648080063b095102850b. 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/GBBPW0100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b4d1879e31dcb0ca8763220c28503f5cbdc123519c034e8de27bbcf1c8e43c. 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/GBBPW9900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec52cef376b0d91d4e4e207c22488e06003bd85693374d684365b953ec3a1d4c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBPW9900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0228a9bc2cc9989e901a21c3e17cb7f54d3a14d6219d1c5b385660ed8040a2d. 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/GBBPW9900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16e048499faa1b873fa63e5ae61b9269b80282af170acdfdd488660ff409fdd. 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/GBBPW9700092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9906253dc1b2aee912cdcaff93ec398a5ce6d03f6eac614abac1090f38520d80. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBPW9700094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ee166962cb4965caa4abfe6feff3cdfe40a09e3c3f921d9cf55f80015b8019. 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/US3D32308102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecba836a7f0441ad9b1e1e8fe62ecb935d10fb33a1c6f6e164d72cb5704c523d. 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/GBBPW9300014.