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 0x8dfce3e4a99843c3477ae3ac60457515d32fad9d4efbd58a03f03712e5411168. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73fd5974-9c23-4ced-83d7-d23b6342ca3d.json and https://artists.proofprofile.net/proofs/artist/73fd5974-9c23-4ced-83d7-d23b6342ca3d.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 0x5eda425b229e8e1f115531b57613c442d234aa7f7ee113e64990999a8ec5d5b7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABJ1299934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1c6abc0d98bf139c0e7d64557e682e0f120fd072a3c0e7ba24854fa7ba9c9c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:04:07Z), 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/TCABJ1299936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086bd211823bbe86aa6fb22eca78137321630b036b17b7b069bcf1b7e163bbb0. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCABJ1299949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc77abd4fbf0cf0b3292051790bb4226542f9408af6616afd77bbb7fafdeb471. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCABN1363496.
Sexto Sentido 2015 (feat. StopWaitGo & Klara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0ade1a8d01fa921c6760fdfb95402fbbcbcdd5614a2a3fa35afbef2fdd9af4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:49Z), 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/TCACA1490550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b84b44545887685939b7c32455a86340ddeea10a1a84c28e6dedf232b81a713. 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/DEU921545001.
Eine Nacht in Venedig, Act I: Act I: Introduction - Ihr fremden Leute hort (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d64bf6be1b4dbd1698aafb6cbb94246b75fc947b8649f68808a178bedae441. 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/DEU921545002.
Eine Nacht in Venedig, Act I: Act I: Duet: 'S ist wahr, ich bin nicht allzu klug (Ciboletta, Pappacoda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa096e71e7b4447cb0cbd4e96fa31c7c5457d5faccf61a1937dd958f9da3e16a5. 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/DEU921545003.
Eine Nacht in Venedig, Act I: Act I: Duet: Komm, oh komm in meine Arme (Barbara, Enrico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f6444d167bf3342ae3532cf8905d675b7a2cd07cf5d5e9a3219fa55b251977. 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/DEU921545006.
Eine Nacht in Venedig, Act I: Act I: Quartet: Alle maskiert, alle maskiert (Annina, Ciboletta, Caramello, Pappacoda, Herold)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5623bdc0841c067433cd2e4a4c4c80736729de465c0b1e4627267f91c6c464. 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/DEU921545008.
Eine Nacht in Venedig, Act I: Act I: Sei mir gegrusst, du holdes Venezia! (Duke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd3064ded20b1e08eaf2d32dea04a95a4edb866125f86a9c77b93dfcd785bdf. 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/DEU921545009.
Eine Nacht in Venedig, Act I: Act I: Finale: Hier ward es still (Duke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db37e9ff9537d5c06ce6b1d67f869a544ae578ef050f5eba32f26efb57dfda8. 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/DEU921545010.
Eine Nacht in Venedig, Act I: Act I: Hast du mir ein Kostum gebracht (Pappacoda, Ciboletta, Duke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafbe75f35c7fa0362c41561f06ad3a0eda8c9a57fb1244b02f6b0ba5ef0a45d. 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/DEU921545012.
Eine Nacht in Venedig, Act I: Act I: Komm' in die Gondel, mein Liebchen (Duke, Delacqua, Annina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee43300e04a8c00342300fd8c5451d361000bebec771aace94d87f9897b1a14e. 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/DEU921545011.
Eine Nacht in Venedig, Act I: Act I: Komm' nur, liebes Kind (Delaqua, Annina, Ciboletta, Pappacoda, Duke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd3d4b8e3ad57ba3525f67bb58096aabfd6c2aebb8f810109668337cfdfba2e. 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/DEU921545013.
Eine Nacht in Venedig, Act II: Act II: Introduction - Venedigs Frauen herzufuhren (Agricola, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff87a9a8bbc3093b8852d257058aaab9a9069c02d712803c0eeaf70923626f3. 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/DEU921545015.
Eine Nacht in Venedig, Act II: Act II: Was mir der Zufall gab (Annina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d644d526b6dd9c7eaa7e452c6cca3850f063ce158d2ba5441f686c640fe7d5c. 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/DEU921545016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0bd724ea57587e929a362d96538e6cafff62a83ab665a9ad3d8cfe79f34f6e. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/DEE861600675.
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
Eine Nacht in Venedig, Act I: Act I: Frutti di mare! (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ac579a8b504e527b6186f20b17ebad82ad4a5304be919e4e0b1ae02a7b878d. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DEU921545004.
Eine Nacht in Venedig, Act I: Act I: Eviva, Caramello! (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f15b82a22c090cb86ed6009e514c350e014458b3952fcdb13bf16a5420f67ab. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEU921545005.
Eine Nacht in Venedig, Act I: Act I: Duet: Annina! Caramello! Du fliegst nicht in meine Arme (Caramello, Annina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd391439042439265514268567ec2f44138739697619ffe03db370a262702d24a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEU921545007.
Eine Nacht in Venedig, Act I: Act I: Du, den wir hoch verehren (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34663834cc2786a815c98c89d25ecf883bf6e9297ca5f4bdca1f2e665f3783a4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEU921545014.
Eine Nacht in Venedig, Act II: Act II: Duet: Ach, was ist das? (Annina, Caramello)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e3587c423ccb6666864429773d8d2fc358989937b9c62e611e4524f80a0cfe. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEU921545017.
Eine Nacht in Venedig, Act II: Act II: Solch' ein Wirtshaus lob' ich mir (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a256d2af9e0baab8f918b75d53c1d3bee69c696faf0b7a06a82195d2a3ec4ce. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEU921545018.
Eine Nacht in Venedig, Act II: Act II: Mir ist auf einmal so eigen zumute (Barbara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf695f717bb7f4a75eb9f7fc49bf4c90f4be8adb8b9b8c64ccb0e2addc96316a. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/DEU921545019.