thumb|right|Apache wickiup, by Edward S. Curtis, 1903 thumb|200px|Apache wickiup A wigwam, wikiup, wetu (Wampanoag), or wiigiwaam (Ojibwe, in syllabics: )"Wigwams, also called wetus, were houses used
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 0xd6553e7e699e6c54721e08d3276c71ebf17d17183e4a5a679fe9bdb984f44ff3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6a4199d-c2a9-4455-8c01-1b172fb49638.json and https://artists.proofprofile.net/proofs/artist/e6a4199d-c2a9-4455-8c01-1b172fb49638.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 0x217efa78e8e16816bde1d7cef70f9688114c884fc6fe19d19092c035d8fb2719. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FISBA6902202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ded5214bb49162a91d1c98624e5dc33a45f1822f739b6dcfc58048dd67ad5f. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:16:32Z), 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/FISBA6902209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb79c447561d328d79fdf54df5a42ea783fdb73f4d23ba7a16e55853d4ef1ec. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:28:37Z), 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/FISBA7004901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e08870464ec9945c1ec04c92bb3d8fa54e6fd7833fbbb5afecd4635cfb18f7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FISBA7004908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe2f0b44c0e24aab84cff01ac1b8aaefd2680088cc32771e8e527c4e16093ab. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/FISBA7100248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ba0a8bba1509dd876879be3a71cab511cc3df95ec1812ebd6d0875ed21788a. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/GBAAA7500271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a05ad98ac764e700295f3f18948ce3fb85b2910db9ab48e1be1e378eb36f89f. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/GBAAA7500272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e70e7b2cf14429bb74241808708ff08b100166cf3f854ac115ad3016ef9188. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBAAA7500273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dc8f9a6fe3416bb5174e06e7c5e0ec00c09547ed1a14bf49e5d79ddf4ef218. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBAAA7500274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733853101b988e46c5dc057cffa006841a9de558259ef14448d01f52184a1936. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBAAA7500275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb662e2db219abbe60da094f4d1bf9662a035b896981c5d825896ca6512f71e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:23:28Z), 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/FISBA7700465.
Pop-Liisa 3 - Live at Liisankatu Studios, Helsinki, October 10th 1973