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 0xdb1224b9845a245c08deb3905ed19489d76f3738c2b6b7be0d0aa50e3b987ce3. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb6d54b8-99d5-418a-aa0b-478438df04e5.json and https://artists.proofprofile.net/proofs/artist/eb6d54b8-99d5-418a-aa0b-478438df04e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kapitel 1 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Das große Buch für Babys erstes Jahr [Das Standardwerk für die ersten 12 Monate (Ungekürzt)]
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 0x500bbcfe9d498c0b5b83fa4335a2fe3e737058d4120d9d6817c89bc5588cad0e. 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/DEUE12474530.
Kapitel 3 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed780cd73384273e549944cf4a01f0cd6b143aa9f7dd60c1fc33b44706143f93. 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/DEUE12474532.
Kapitel 4 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d422b97f637e87d4ff898c00089f1ba2722ca2f20566c429b6045cec490d28b. 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/DEUE12474533.
Kapitel 5 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8897d00a00d3ff54652daa0b53772146ac2dcb42f4c535f0e680f65aa4be840. 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/DEUE12474534.
Kapitel 6 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55e04aff29ed5c5c27de204949c45c977104f417bd4d57caebaa415a4b0a68a. 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/DEUE12474535.
Kapitel 7 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17535e535687e3de3a600a915ecfbacb2dcc7652098884ff29142adf41fb7e55. 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/DEUE12474536.
Kapitel 13 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96aef40216ba6b8dc345aed9001556b50bd4e175ada6a7d80761c3b64cade4f. 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/DEUE12474542.
Kapitel 17 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d84cc11bb410d58b3871036fa8662dca38ddb6364fbba98691589873182251. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEUE12474546.
Kapitel 18 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c72a1cca72118fe4d62793842567788077506f63bff51e4ffc23c08c8053b4. 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/DEUE12474547.
Kapitel 19 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3acbcd239288795b5937f0859276f2b6bd2207fc4a7cf0c8c9aec736165d72a. 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/DEUE12474548.
Kapitel 20 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ff2e0a9a5b31e7278b6977e6cd18f0431ddf400dbbf65d576a374896de4472. 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/DEUE12474549.
Kapitel 8 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3094bee0003a299e2181013ee8681753c39e91b5e0631c66590e1932464f36ec. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEUE12474537.
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
Kapitel 11 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3303a0fa30e0086642e38177eeeb00aef8f961cf6f8853f1f0406f77afe0eea7. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEUE12474540.
Kapitel 12 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f084bf03354da2d1146a2f3c6f7b0da0813cacdfe10941faa84a9f0f0b09955. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEUE12474541.
Kapitel 16 - Das große Buch für Babys erstes Jahr - Das Standardwerk für die ersten 12 Monate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1db2d4e8716bd8a1f1aba95b80db65102ba0a0861146e49607d325c71d502c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEUE12474545.