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 0xb77ba2b491aeed7f8c3c2dd0ef14b87d4d19e3cc625e8a4d9445267f79fabc4c. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6350cc3-61bf-4abb-ac20-27c80e511353.json and https://artists.proofprofile.net/proofs/artist/c6350cc3-61bf-4abb-ac20-27c80e511353.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Der Nussknacker und die vier Reiche (Hörspiel zum Disney Film)
Kapitel 01: Der Nussknacker und die vier Reiche
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 0x423e73861f529adcdbd610d9eb3c3fa33a6d539824eaad2736cd0574fac8476d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218959 — a six-check JSON result.
Kapitel 02: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397a9e23868f82092149e9cbcc32bc6127a06c06155f04f07c41ef39ce3e6521. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218960 — a six-check JSON result.
Kapitel 03: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d23e40e4c265bc37fbfb4a407dc18b10e715c400a4b7c78b9622c2cdc787c05. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218961 — a six-check JSON result.
Kapitel 04: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43650169559d96702178fa8f4cd2a9a66e161ac32fdb91640aece8177e149c15. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218962 — a six-check JSON result.
Kapitel 05: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179817a20d7e11420b9420b3130df5499ac942858bf21294ee72d1e9d2b7594c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218963 — a six-check JSON result.
Kapitel 06: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b183e821cd98c9102676630e6f91e98505ea84069e0862022f033365631a2f5. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218964 — a six-check JSON result.
Kapitel 07: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0808c15b4c7eb98f95014dd42aeaab99c6c356f3c4d47e28e205461af92113b8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218965 — a six-check JSON result.
Kapitel 08: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b54056dcc64fa7fe41047ee28f4b6a999a6ce7e15b1bff7c5187da88966d6fe. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218966 — a six-check JSON result.
Kapitel 09: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e006bba87f0b3492fbc480504b63eb1d800bc6d300516d183f270233c26e70. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218967 — a six-check JSON result.
Kapitel 10: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd93068e39ff3611f6e7f0c951527759a91cdb42d3703fc624ab2c9cc9352177. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218968 — a six-check JSON result.
Kapitel 11: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a845d91fc55799def8cf2b026e8af4d5a1d6aa374ffa6343897b351f299b170. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218969 — a six-check JSON result.
Kapitel 12: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffbb6decc13550573d427f50e6aa1cdaa894f9acb0f5558d00b90dcf754beb1. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218970 — a six-check JSON result.
Kapitel 13: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec41ecf622ac3462bced2beccd275e5f7d3d1b34ca509df006a9326c0b6dca5b. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218971 — a six-check JSON result.
Kapitel 14: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad94bab0d2dbcddc0be9b6a84665eaf9bc92e2712502693614b71ba8d436fdc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218972 — a six-check JSON result.
Kapitel 15: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31d0e91d44efac61ee8a19d8961f396cbb62102407e13c1d7b3c940b5d19d17. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218973 — a six-check JSON result.
Kapitel 16: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72619842083939561ae79aa679a5df6f8b648ce640971c44d2140385aa50e86f. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218974 — a six-check JSON result.
Kapitel 17: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dad878c94c66f0bdbea733eeba42972522c6384fd41d2d8ef050590b114047. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218975 — a six-check JSON result.
Kapitel 18: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce077209f99d2c339df3509371320e91bfcd601d6b81724d8c49ee001acad248. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218976 — a six-check JSON result.
Kapitel 19: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c88247189a3e39ca3f87b91ec58ff59ac3c46299dff9b1a61a696a9950482b2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218977 — a six-check JSON result.
Kapitel 20: Der Nussknacker und die vier Reiche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59f5b4682b6af80d063f26b5e0e2212fca45e142df80d3945d751c51f5398f8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD12218978 — a six-check JSON result.