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 0x562091ef64c68ddd08c9dbc152ae2f80ad154482ca3828e5277e68bed93af425. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e17ae282-402b-430a-9339-50f2cd53a5a7.json and https://artists.proofprofile.net/proofs/artist/e17ae282-402b-430a-9339-50f2cd53a5a7.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 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 0x126b5bdf9fe4607ac7128421e794231283209a7305c3bf6b8a9e6432f98a7899. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DET951400542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cef359a532ef33dee242477eae7481e175f72f3b164c05cac1b6c80de9bfe3. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DET951400543.
Fantasiereisen für Kinder (Abenteuer Dschungel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fce6731e786e3cc7e150c0bc997234b0e8b78be8473f0f6c136e3a98bfc9ac3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DET951400771.
Journey to the jungle - Abtauchen und Vertiefen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c20807091575dad7c825dcc12d3e376723c743b7a83da15e42642965e9f5082. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DET951400772.
Journey to the jungle - Mein Freund Kimbal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0694654f8fd0e81a05337947f828c200e91acf4a231edd12be40410d8ff1e24c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DET951400773.
Journey to the jungle - Der wunderschöne Regenwald
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d8126b0a0d70d55995f045b071f92e791e0761ba661fac610fd31c065c5157. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DET951400774.
Journey to the jungle - Zurück im Hier und Jetzt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552ed25f32215914c57ac2aef7d61af439481bf2d15a1fed230fa9bf17cdf468. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DET951400775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9a4baf592049f02eed0715f66f8484a2130ee839f028bbfffeeea3160de21e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DET951400776.
Abnehmen im Schlaf (Schlank werden mit Hilfe des Biorhythmus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cde851f5aaf8192f4f5050df8d87dcf2c9ee9935850db64438ffb170e4733d3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DET951400927.
Autogenes Training (Ruhe und Kraft für den Alltag)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa632612422e43787b47a2c086889291f045e6bd8fd9aeca320013a0adbed761. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DET951501066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe821e6716474d557c191b499f561dd985331abbc924e0184506b8c83515c22ac. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DET951501068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2961bb4d22711a03c7b538cebda7f250728b43bb0101f52cf3fa82863c4201ba. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DET951501069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942d160967e1cdd9979e7684f914c4cf79eee485590160c2563e6edbca90f520. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/DET951501070.