Pure Bathing Culture is an American indie pop band from Portland, Oregon, United States. Career thumb|Pure Bathing Culture performing at Cafe Du Nord San Francisco - February 9, 2024 The group's m
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 0x81d45c15339db8852115f80ca58f74b017403ce4a138ecc757e3a4f08fd9dc5b. 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/943b4090-1664-4b00-abf1-e2943d2e0758.json and https://artists.proofprofile.net/proofs/artist/943b4090-1664-4b00-abf1-e2943d2e0758.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 0x8d77b5df4a1d3c10dad111c9300d2d419d8c955cfa33bec619b556111e620b9f. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QMMA51200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d2365d53cff362c8f768348efcfa73889629d87618f0ed60326303dd559185. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMMA51200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0991bc1441f06bf49960a527e8744cefa30a0fdebdde3c93e7d1f8e48289f4c5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USBQU1300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f4901975f2b7603d0262632378795defd6c02fe10ab716de67f8a300660019. 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/USBQU1300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f4901975f2b7603d0262632378795defd6c02fe10ab716de67f8a300660019. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USBQU1300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e659d7a84dc9fae689185cccfde30fa307681db6b5386970c1176595c2517e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USBQU1300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b81613950b2e6cb7ae5125cb4719cb7554bb09a8b082d98f9763ea37c88b5be. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USBQU1500424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b81613950b2e6cb7ae5125cb4719cb7554bb09a8b082d98f9763ea37c88b5be. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/USBQU1500424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90aa74ce8ad9d6c3742bf6048b13e7b3f67c28ca99da103bd7d0792cea5e6bb7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USBQU1500423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec892f50e78bf291cc183f3c6393f039f0dc9fdad9f570d6b3eb88a8a841311c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USBQU1500425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379ce26914df5f3f00879e2b95c7d064d261dd570c77ffd305dcf92fca8fbdd5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZDZU1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2107a7449a623f79469d0b86c61c482b7f739d989bd1f50905e4786daedc1d43. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/QZDZU1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d83560fae642e45591638885c4cb368e812deb908422cfde0668cb8dc326fdb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDZU1800006.
The Downtown Lights (feat. Benjamin Gibbard & San Fermin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0853961fa99695c25dafb9f39ec47bec611455b25898cdd13be06b67786f83ab. 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/QMBZ92083953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128fbe60e9702cadf4d8cf3607082bca1e22ba3cf15716a86ddfee071737b9da. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMBZ92393940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61adc5f07e567ea6aac4c87edb9c7cea00f08c9f5cb5cf1737659c27549ceb2c. 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/QMBZ92393942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de0d7526917ec943ee1cc771462e47b75b1176f31ec5e525d3de2d6708df1ec. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMBZ92393946.
A Little Bit At A Time: Spacebomb Family Rarities
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb69b9f1aa40c8682023bde3e5146a7d6a5dfd38ad9ba9834d3b75e93e94f5d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QMDN22000049.