Pink Martini is an American band founded in 1994 by pianist Thomas Lauderdale in Portland, Oregon. Group members call it a little orchestra that crosses several styles, such as classical, Latin, tradi
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 0x6962ffcde0dfece3672f12b616ae95e297ebd92bc2e095c6dc5a770704d59ceb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b42c089a-c631-4357-8962-3846018b9890.json and https://artists.proofprofile.net/proofs/artist/b42c089a-c631-4357-8962-3846018b9890.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 0xa2c598295b4026b7cba38380bb95ce4072cd6707feca28d9551dab82a1dcab1e. 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/USHNZ1800196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee9b25b2af82b33e617ca87761c95c0b7bed3ce9c0a865d2c790654fadaf79c. 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/US6QR1700008.
Klangmeister - A Musical Journey (The Magic Part 03/04)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dcb977a04ea76d58da2098b41c3a4279bcb8003ecbd680aa2ab33126453e8b. 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/USHNZ0900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3364ddb48027510442b317385a2ebba92e1e9ef751d354df256617b0975cda89. 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/USHNZ0700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d3e62a3fe4dbee6a7573174f9dd76abbfbe30beebae17a32368c6ae030490f. 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/USHNZ0700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec6ec5ea14906598fe9301c52a981e7074d049e71b72599c0a6a0420eddff3e. 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/USHNZ0700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6db292d2ac900db722364c5d98030116fc8d994074dff533fd4003926c961e. 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/USHNZ0700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a4a0d681e78e131b0f8f0a866374b484128157335be5cfa7e7b5d832b4ff32. 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/USHNZ0700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e17d89b39da124d8eea5c0266901268ec2f10620a7a36c205d01fd4c467e399. 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/USHNZ0700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f89f65d78d00e04258c8b07abbf06cdb6d772476aa4fce91db018e45ea6174. 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/USHNZ0700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a72a35327af5ab68b0a1f42c482fd6888c599394615f463deda91218d6f18a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHNZ0700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39289b1c1fa9de51c98389ed45afa909a223cd7859cd4dedbb3e8d13ab806b5. 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/USHNZ0700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc66d3c8bba267d5c9754be643b80957e34ca4efcade208b66b8ac12e26b67c. 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/USHNZ0700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27a46368e10450a4ca640a1df6b21c0bf1d5d8f5fa31b12d6341c42880ba83e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHNZ0700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b79a6fd19db18d0c8ae74e3905741186f9268d4fedd81cb110c4fa0dc74867. 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/USHNZ0700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa004d282cb4701ca3a5960e4852a98ca9d0e12959777f24e11de947f1faa88a8. 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/USHNZ0400003.
Shchedryk - Shchedryk (Ukrainian Bell Carol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7e2dbd5020e95333db240dced0cfc03f73bb2d6e943ff387ea1567c1e3b881. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USHNZ1000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb455eae44e469dd92f0b56760d56c2e0a7bb71a0c58226a74ba374a7335c78cd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHNZ1000087.
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 0x8d978dcdfbc76d9f497ed10b5068e8617654db1d5b1496dba4986cb8d16fea48. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USHNZ1000098.