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 0xa961c390401b089df78543d39bbccdba332b68843f578b697a61e8973eaab569. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e889139-ba6f-4d3e-853a-b70e7f9b3726.json and https://artists.proofprofile.net/proofs/artist/7e889139-ba6f-4d3e-853a-b70e7f9b3726.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 0x9fd8949d844fcc354b653e8e0ff24ea3651e11f4e1653b8339ba0607bd1ec606. 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/CH0830900839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d02d79a054a46385089d3303ca7dd39931cd34345ed5f9360b7097f42dfdf96. 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/CH0830900840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dff0223e788cdef584b70779fa47c31e34200f6cc79557695ba15b1ac8e149. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CH0830900841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d48c3dc0e3988a5afa92471ef8aa7e4cf8d2f44744b015d2a9c68356a638a62. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH0830900843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1ff0e3d3930887acf53a945b5ba297335010f30e96b292dd0dfbedbf618707. 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/CH0830900845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0178a8e61d92e84e438a919a8675a2b5e815bfebc0058739b0ada796299ba5f5. 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/CH0830900847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364294464a282b8dfa97d4be4c30b4b635e5cae0d64c408bf0ab8c2dd99ed987. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CH0830900849.
Unvergängliche Jodellieder "E gschänkte Tag"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2edb1e6cb0c9d30f06b23d386f0d304fe9e2d36c06d83ba7199ff82d14a7b4. 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/CH0830900598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab13197fadb49eda8765f6ef670b0d2f74928fcc36abf2222cb7dc301781fad. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CH0830900599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44369b8825da157f74bd9c1c01776d84b1bb47ead2558b890d2497ef69f9b97b. 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/CH0830900600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd38854cb9fa8d91733a5a4922a28ac50eadaca0a9e4a1ddf6b614d019556c0b. 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/CH0830900601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaa6ae72f118b7ae8cca212944051b2959418689b5c00250780cd50594e6466. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/CH0830900602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184e3f3068fea288a0a5d872acefe326f49f19719b95c5687872508d3ede0194. 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/CH0830900603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d26af78f74f65bf5b28ff070ba72ad280eeb4c40865438aff519299643366eb. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/CH0830900604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8190c682063e323d23f7b904f686536309a6238ec6003233a663c622e8a7c6. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/CH0830900605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61790b6433ae55ba02aa9f619ed5d2efae411d77cd6833d8eeab75d5a03224da. 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/CH0830900606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e0a20f3fc7e2a0f55358de40fd393d6227c18d91a6679e9bdb0047afa29670. 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/CH0830900608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc3f161916a9b29375cdbe94aaf4ed133f455419b3eb969d000d2583ea51dbd. 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/CH0830900609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e377fa4b7160ccacfe4042a3b1b35fa8001ca55b06468011b430b3f751633d6. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH0830900610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97adb098ea5f9bde8d6e6caee8856dfa90e0e6067aee79d1efea0411d5a14836. 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/CH0830900611.
Unvergängliche Jodellieder " E gschänkte Tag "
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290e352bfe03d10d0d449aecca67577730914b0ac1684cb547e2621db9f15787. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/CH0830900574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76486a34f2c2c8a892a752edfd8e59ba0c39e028bc79a630f38f9504bd33374. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/CH0830900576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d8d23eea6d63a7cd99f48d4a8dc5297648166070acf4b98ed2102b79c157e7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CH0830900577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0284f50a0b5ca2921c5e91a9dec08a891da3940a7f6baa9e95b620410a022139. 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/CH0830900578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819732b78d17d41d767b47cd5b6dde8890a4706358d2097ba01c0a9bd99b777b. 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/CH0830900580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62db0aafdd9db07c8ca16ba0366324aa8c951d96b5bffe6e1d9750781e73b122. 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/CH0830900581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4a1fa70b25c9418dfd66c134a68e75d0af18ff5dda23971ca17f767f066a8d. 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/CH0830900582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8d425c86b1bc8bfa455e5887bc2d43beb64aa8809ddea725f8ae2ad1b27d7f. 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/CH0830900584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38490f1ebd70173b712274983b928f6822ccee7935ed7594c49f462577cb1d6. 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/CH0830902788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdadf929a0e570274b4b7632ddb577ec552ef587fa33599dae4f1f9d68dfc8b9. 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/CH0830902806.
Der Berner Naturjutz (Die schönsten Naturjodel und Alphorn-Melodien)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977c0b0051e027557f1a1f64900271ec267ae7be275e2bd478b4208070ed4d52. 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/CH0130200432.