The Choir may refer to: The Choir (alternative rock band), an indie rock band based in Nashville, Tennessee, originally known as Youth Choir. The Choir (Cleveland band), a 1960s rock band from Clev
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 0x38a181806f681dae8a14a4e2676d9090809707e715ce255810ac7142ca241870. 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/7164a6d6-f84e-4389-a7cf-6c5c038d13d3.json and https://artists.proofprofile.net/proofs/artist/7164a6d6-f84e-4389-a7cf-6c5c038d13d3.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 0x3f291399c6b94b8bc56f50f1a370082364c75b0e29fe77b1737905f77095aa07. 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/USWR60500526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc991aa885d900e0f6a9f0ee700ab91fa92ed7ba4404cb3a5cd93517d6e3a99f9. 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/USWR60500511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dc13430ac43a2980df96d3d236ab0564476b174b94bc067c990db631a7b2d5. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/USWR60500508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5620e1a47b5b095495df36a4086c883f4525f2a903b6bb948185f08bdd709ff. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USWR60500514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b377e255a6be8fb092c9c3fbd9bf7ba25d0e63bedb6408dc2c522192c5a8c9. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USWR60500509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe7e24b8c0a7abb8fb824a0a2a0d4b7144afa4d05b602c939c0d80a475c92aa. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USWR60500515.
Love Songs And Prayers [A Retrospective]
Love Songs and Prayers (A Retrospective)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d00a2198bf4c977f973600dd00b0f717f7a6bc7292e5d5232d2284600c6050. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USA5W0404937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b454bc639db8ad664f37a477980ba7d985d754d1737e704a07a81badaedf25. 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/QZFZ62094588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc389887d403525aff89a3be84c7d6296692e0f4a801c226666986a561c07e9ad. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/US86B0500165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22906630b6118a8a9957d8a775d1efd2fc3a18874f5d0daa4ec25b7f79887049. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/US86B1800407.
Kissers and Killers: 25 Year Anniversary Remaster
Kissers and Killers: The Acoustic Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4cad6c298e1650a726ca92a478b8e60a10e88a52d3ed7e23ba2e3d02d33a69. 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/US86B2400563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bb05ff5c9f57bcfbede6757425438fb6fa6e29f52925222998367ca8b61ad2. 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/US86B2000473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7eb64481a7baf86bba641dd23c354ad3f8231c6ae5f6fc77870cd2792d71e6. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZWFE2414327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1c70ff637ba9fd47f6a1d1a0b386ba7cf8e4c259978902f836992c0c2b680e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFE2414328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082a28b3decffce81bae43b3623f61c5fe7e294818426cb24755012731f48bcb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US86B2500539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31984db5f91097848496d3e3aeaef25384f11c6936e70eebd3724d2ac872d2f3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US86B2500540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc876b16eac0eca1f15e5aff1acb918f16268ad59cec54fc339f8a35124fe5f7a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/US86B2500541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcce08189da3a5123949542abf2aced99fa1e86e988fe22b9e262228afef605f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/US86B2500542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d778dad57e5ae04dab7fec5a34b2e2da7989ce55aa9805cbf9bfc1e5308052. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US86B2500543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac074639fd85927781d646114ce1e89e667cc814b53580846998a70210774a73. 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/US86B2500544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb689923218923bbd4df69b3f0b007823343050692d5fa207165ce6ba7194c9f7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US86B2500545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b356ebcf41f7849e700afcd8c1f2d7037555c75fb8171d9f9147b1b2872b48. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US86B2500546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x297631fe0fd5e6b55bd998621ff6e8e33122b0e34dfbe6a8f75e5fe637345ae4. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/US86B2500547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4198b5208b802e7974e0f308da21dcc35ce2e6ed4a3eba4f3f82ac44755088d3. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/US86B2500548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe379eaf15dd9febcc0111ef0b7b2dbc022d79dad311aa1af39238dbad1ff241f. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USACX1002830.