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 0xca3880c7654e2d3ca473e658346c9e427c3f6cda26faf3fcb3538000294ec3c4. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4568f7ab-f832-4ade-a5b1-d215c9ea0bc1.json and https://artists.proofprofile.net/proofs/artist/4568f7ab-f832-4ade-a5b1-d215c9ea0bc1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Only Bach - Cantatas For Soprano, Violin & Guitar
Cantata, BWV 197 "Gott ist unsere Zuversicht": Aria "Vergnügen und Lust" (Soprano)
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 0x2237e05347d271d64d3b537bd30f75746440a4624da12e9a8d9ec7c1a7650e6a. 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/KRUM71400013.
Herz und Mund und Tat und Leben, Cantata BWV 147: Jesus bleibet meine Freude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5723c4c37bcae1f6e2f6b37afb4c5bdcd85a3aac602cabbc9cb23c5bb91998. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRUM71400014.
Ave Maria, CG 89a, arr. from Bach's Prelude in C, BWV 846
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dd0858824b53bcdf93a209a10768553f73e53194f92e8014df067d452f8503. 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/KRUM71400018.
Cantata No.55 "Ich armer Mensch, ich Sündenknecht", BWV 55: Aria "Erbarme dich" From St Matthew Passion, BWV147
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b6e4b89d11f31e12fc5f11c875b3c31e13ab364d3bfe98db17f55247452c5a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRUM71400019.
Herz und Mund und Tat und Leben, Cantata BWV 147: Aria "Bereite dir, Jesu, noch itzo die Bahn" From Cantata, BWV147
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a1cd6cadb74bbc18a335df319085e7bfe7d3eef776fb65932f4dc0c0d037a2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRUM71400020.
Chorale Prelude "Nun komm der Heiden Heiland", BWV 659
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75e09a0aea441f4b56a2502fa59ed80ef8df42dd4751e6e780d53efa31734ea. 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/KRUM71400021.
Liebster Jesu, mein Verlangen Cantata, BWV 32: Aria "Liebster Jesu, mein Verlangen" From Cantata, BWV 32
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e8feb822117cb4cda170188be191fc1f285ac210e06be156f63c2a19a6cc8c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRUM71400022.
Aria "Er segnet, die den Herrn fürchten" From Cantata, BWV 196
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c27ef2452ccc5658175db36469f45205ddac6577999b73cfb5f144aeefce301. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRUM71400023.
Chorale Prelude "Ich ruf zu dir, Herr Jesu Christ", BWV 639
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc173d87a60a6276966a793b79f073f290f2385369426d35d3ed6432c87ae9bf4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRUM71400024.
"Bist du bei mir", BWV 508 Aria: Bist du bei mir, BWV 508
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec29a57197265a41e592bb418005211c0e87493ca7519fe4680e6f70569edad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRUM71400027.
Chorale Prelude "Wachet auf, ruft uns die Stimme", BWV 645
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fb24f28885fe49f4d49aaaa880e3386a67556cdafddb6d5f63247ffa691553. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/KRUM71400015.
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
Ich geh' und suche mit Verlangen Cantata, BWV 49: Aria "Ich bin herrlich, ich bin schön" From Cantata, BWV 49
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1269750662afa3284a850ec26feb6d2c3da46e445e72ad43f222cebb8e2b8984. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/KRUM71400016.
Cantata, BWV 68 "Also hat Gott die Welt geliebt": Aria "Mein gläubiges Herze" From Cantata, BWV 68
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1183bf8bc276b67e8641849fc8755f8bbe2574f0a30c6d38e50e46c10d57031. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/KRUM71400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe548bfeb4ed2ca461dd832823ba487b3b7d7550d068ecd9eba912f533b958b64. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/KRUM71000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c09a07f8f24be102d2e61db2f794ebd34e44c7ec8d492ecbc6020d99235441. 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/KRUM71000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7899f08b10d51f55301c38e2a870b37cf6e24a83b42615e38a5219b1fc111424. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KRUM71000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead812d87df74f00db2fb4b8863e3791c58dd6439bfbd2501682dc2ba56652e7. 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/KRUM71000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072e973ef86c20d89be0a563d809077dbcbbbb362141bc169b22d7f5420f3714. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/KRUM71000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164020351fbf7bf0d60fb91988b124417e92fefe56abef75515563220c5cb4b8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/KRUM71000022.
La Prima Donna: Sumi Jo 30th Debut Anniversary
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5723c4c37bcae1f6e2f6b37afb4c5bdcd85a3aac602cabbc9cb23c5bb91998. 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/KRUM71400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f1e34131dd93fbe093c60671182eca0fc5fd29048da3c42f8780cce0ed1044. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/KRUM71000034.
Uber ein Thema von "Ah, vous dirai-je Maman" KV 265
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177eba2f7abc742e6edaef9b3db5939744c9e4f49deb19ee7d2e94d7522d53d7. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/KRUM71000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf317c4d912c9d907502244d16a8132edd53994e1b8d56ca94aaef0a30733cfd5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/KRUM71000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a4db9216257d83e09d4256c9c21b34eb45c845e9772382864dd5ba13210016. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/KRUM71000033.