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 0xfd1e70213f8add333dc4e2d33c4e3e211d4ba1e655f559a98e6bda0e59afb951. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55cdf96c-7de3-490a-812f-cf72ccca6d74.json and https://artists.proofprofile.net/proofs/artist/55cdf96c-7de3-490a-812f-cf72ccca6d74.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Goldene Zeit Der Deutschen Schlager- Und Filmmusik Vol. 8 (16/20)
Fin Olsen Mit Dem Erhard Bauschke Orchester
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 0xacf649d771a8296516b21cef2b914fdfd12e9698abfbd653bf8ecc689bd97f3e. 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/US2Y30711555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20486e695b443927ee8e96e80bad4b25c1d5615616fd694fdf96e1986121c7b. 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/US2Y30711557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefca0bc3c7c537b1b19d788713cf4d7b797345af53f3f9ba515587c4bec97987. 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/US2Y30711558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979fc85100324c3ad17014673b45f20cf7b32e9485ddba34bbf0a970d79a9bc7. 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/US2Y30711561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd928e1f01344534b8faf2e641e5cd1ba3d4abc21acd94a8124c5631a9a56e2. 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/US2Y30711563.
Kurt Hohenberger Mit Seinem Solisten-orchester
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232a7070d91395cd6534e9d28c395b6ebcbd62a676b84a5becc4dfdb8bae2e88. 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/US2Y30711565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11426b5805a40b7ffed8a6aa8738afd1883623ce029f7b53f4ad1a2a11211a8f. 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/US2Y30711566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25a2a8aa99c50febb57dfb0942208a42fb88fa727bed5abb264f2dc4f0c5bed. 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/US2Y30711568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21165effda2887b3e313a685622975f8f68d19af2942b98f4d1270c72d5caaaa. 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/US2Y30711571.
Tullio Mobiglia Mit Seinem Bar Orchester
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd609d2c69fd2be40fb57ec15b7e6b2a820df1441674f076b59a5778e221dd041. 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/US2Y30711572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ae251f6a464bf13b1c190b1e9db33d45a2eb1644c82129231770eb6af7853f. 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/US2Y30711570.
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