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 0x13706a0794b73de0f9ad1dcb3e32a3d36b099b551c7f63a2d6ee0175e15c916f. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2566398a-eea7-4d4f-9117-672ca5ed3187.json and https://artists.proofprofile.net/proofs/artist/2566398a-eea7-4d4f-9117-672ca5ed3187.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wien bleibt Wien - 50 unvergessene Wiener Lieder
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 0xc7390c580b0d90020915d6c38ef83e5c3e6d5f24337c326c2d3506dd5fdc2965. 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/DER751646814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081954e05c0f55ee06d53c7ec359c228cb16244c60cbc0882d48c48f7f74319f. 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/DER751646816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f23cd88701bb67dfaed2cef4e407005800136fae55684fa81dad500b6e96691. 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/DER751646821.
Aber der Nowak lässt mich nicht verkommen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd83e8912e9c223da7e7323dba8b7692acce95c39a30f194cd4e47b8118808d6. 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/DER751646824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d73eb7d5db7736d386a85a0a4df7987fd50eaaa3ddf1b2f68a2e9606a4b725f. 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/DER751646825.
Heurigen-Lied (Das muß ein Stück vom Himmel sein)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc8b574c67c6bae625b77b9256beab2390fc95de094eee712dbc0d677c9ba2c. 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/DER751646827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab6187131ecb972151e73cd3a8d29d5f130d7eae2c2698de1b9c58f8913519c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DER751867430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d8ab5519431cb30685a5e4b4f74fc2e51109fc030428fedc959043f39b8c81. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DER751646812.
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
An der schönen blauen Donau (Walzer, Nr.314)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d4cb9fb011e5f996ee19bfcbbeafb6e262f363481c9d2f18bece55b96f43e7. 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/ATP130148014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7473c72b12103f39cde91c573aa6bd122f0af97b98787bd2a19ea4ea6f462f. 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/ATP139002302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53e3f359e0eae803e726c65b7bc6a979b86c32671ece8b222e482bce94ef197. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DER751526804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cff9f28c501953537d61cff111e70f333ffd66536279b520fdb054f201e1aaa. 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/DER751526805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3c8550114b156166b418c4b763efaac26cf26a96ebd705993bc3f8acd36277. 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/DER751526808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc436c18d402ae8be57e732e47a91eab6fe03929c54b4600abe4e826da61de024. 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/DER751526809.
Ernst Mosch und sein großes Blasorchester
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ffa3c733bbd334489f6bfe55292b0f9e0a1e3886c7392ad8530962ecaf042b. 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/DER751526812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae39e7b4c66deb043e50be9bc93b461e7366b7802d9758860ae1c2cc263a28d2. 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/DER751526813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518eedf26bc2349271a042ab015139aba3e0595583abc47a03e78275bba609e5. 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/DER751526815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a93e333d43d77115eefb66610329842e8666a3319fe4c8c53455b891b877430. 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/DER751526818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c240fe02d351e1e8c370dc1cd3f64404fef4450b220f6a683d9f931d1fa0234. 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/DER751526820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b18185a6d6990bd78e45d3aadffa8c2d3b641574759ced5b2dc66bb0676ae3. 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/DER751526823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d51c2186528683d0446b8062db9d20d9c18e0970991ff81d41b4b494b72e1c. 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/DER751526824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184a1d54b61b67e04ede98531cc65f231a11fdd4be962ffb1ea35fabb26eb36e. 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/DER751526825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686cf45ca801490a25860f2cedb582900780b08660ee8189e6c40c99050de405. 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/DER751526826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3518cbc05730e137ab5ba69ccf2592969b9f1271f7bebd33b1063b24ad9d2cc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DER751526838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c857a091a9a8fd5a5bef6c7a018a7b0bcb5a10e23396b1a3c5a45f3cf86d61. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DER751526802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a44d1bf0c50330f01578386c9648e1435ea62d6d365e67fbb11ec1c9ff0733. 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/ATP130251422.