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 0x22f5ff5f735413930e5428a2f9dfa544201e6cde5e3419f2c1321553f52ba27a. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e24f09df-c239-4f63-9bae-f43bf43e1a9f.json and https://artists.proofprofile.net/proofs/artist/e24f09df-c239-4f63-9bae-f43bf43e1a9f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
E gheimnisvolli Schifflischaukle, Scene 1
KAUT, E.: Meischter Eder und sin Pumuckl (De), No. 3
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 0x5a3c7bdb982962623119af71374d7a3671cc88f20581974363254edf15c32178. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201192.
E gheimnisvolli Schifflischaukle, Scene 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317eaa1bc5fc5b824d4874e3c9954df1fca44c07281494cfe167d801c3b24a92. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201193.
E gheimnisvolli Schifflischaukle, Scene 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3bff3fbf7b3a590b24c6ac6f03dc53a9b382b452549873dc1456e7fb6e9b2d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201194.
E gheimnisvolli Schifflischaukle, Scene 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3284070bb86c8a6675cf982b1439409d5854a87dd3ea9c9435fae9e3abe8f5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201195.
E gheimnisvolli Schifflischaukle, Scene 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e91ead23bed6cc550883874867205d9424939cae7e6b0d45226a519cbbf0b0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201196.
E gheimnisvolli Schifflischaukle, Scene 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013e366e121368ad8a2ef999bda8b1668fefd47e79e9a70dbcf1015b055cd1fc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201197.
Es gschnitzts Bett: Es isch natüürli scho luschtig!
KAUT, E.: Meischter Eder und sin Pumuckl (De), No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb16568a3b0d7d17e2b5d2b19eae091eaefa3c4778e0eb84d2f19260b1f53cce. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201281.
Es gschnitzts Bett: Nei, nei, wott i nöd!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2d5a043c2e36476dca4178180da4ce4849cdee90b5930287b678d805a712c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201282.
Es gschnitzts Bett: Miis Bett! Miis Bett!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ade2c63b08a46ee543de2d20504ae16227782ca8ae6f1f8c11240658c598059. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d90a21f66a9f088540a6f54025419b702a64d8961a8336ed59596df348e89e. 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/CH0042201284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9961abf67cdee4a31084767c294974053f8944620f4c7f3f089dbc9bc2955df. 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/CH0042201285.
Es gschnitzts Bett: Also säged emal ihr Schtriiti!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a8999272ad3c73b3cfe330422bddd119b47ff85550f73e909f1e87791281a9. 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/CH0042201286.
Kaut: Meischter Eder und sin Pumuckl (De), No. 5 - De Wällesittich - De Pumuckel hät de Pfnüsel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6182bd51451a08f5880444a316d37225c53192b59077e61523f2fd5662786a8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764a32d67d32177d216cfe150eff6058ad08b082c8cee22906ea858a39d51832. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH0042201031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946f0f0cee470f224d034452797e4fcfaa7c4f56ffb1f36528d731a0a06b3d4f. 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/CH0042201032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97afae0fe1f804aaa7d766c4ec9ed75b8b8df53f219b5989bbc8185cc4fdc72f. 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/CH0042201033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5c6133d64d2a2935c5826f2ea9aa8c2f028a329031a6749ec7e5bdcb1c58af. 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/CH0042201034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753fbf60f104b813e0da1b25fe88db14facff6f9831265aa6194d6bf9db984f2. 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/CH0042201035.