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 0x3cc617db3c34710b7402defa25ac51b22c1422ad021f88cae87dffdcfaeb18c5. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4a81bac-e81a-4d72-b032-1e2288f0aedf.json and https://artists.proofprofile.net/proofs/artist/f4a81bac-e81a-4d72-b032-1e2288f0aedf.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3008f6df2c042bc264861f90f6ca2ebb2d764d604605b5c787943964698a9c8. 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/SE5752440964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e3ccb1314ef3f7af456ca060674a06cedae6a8c35f7534a176a5fb2667e7f1. 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/DET740600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249d06e47fad9df17c8b708e8f9748fc41ccdf9879c7360b50173696bf12466c. 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/NLS241501891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afeef87d7efcbaeb48a745018c4e6a4b014c124b65841cc453a72e06d74f058. 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/NLS241501893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd979b65568121768eed39b796763801e5daab183eb80552fee2c55212a80f2d6. 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/NLS241501896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bd300164269e9afc09866dd67997c8762fb20e7517282878d47f85ca87cdc6. 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/NLS241501898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a85afb83d2c490d1866d179c7ec7188bf3f5cd4569ec3f8ead0c8ab33555bfb. 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/NLS241501899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee7be1dab3ba7a23ed953f0210a313c34f79d406721621b1d25612940aa7098. 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/NLS241501902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2e8cad8845f8bcbfecba745421e40a9c193b95fffb7217d4d141803305b68a. 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/NLS241501903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f609fb87fd162cfcebe0250dce671d55cf6ad3999ff8e7e0629bea433e97c08. 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/NLS241501904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6ed18cf2325be87e93627c8e8307dc202ee73b9c026d803463863c2117e93e. 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/NLS241501907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128a28624ae162dcff3d45155167a5a96968a5a86f5e77a025df652c178af579. 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/NLS241501909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44902e61345a2562b17245d9fe5c86b882ee993ad137a18f4d89fb2cd4f1be2d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLS241501912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498605d1a3198e668e8c7fcbe80b6cd23af915a4408a657e2d6f5c04844cb01e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLS241501913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4890c6907a2e4d732490dadcd8d5742bca1c24773461a6df94cc5923beb6b29. 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/NLS241501916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de3f1a2c9f68dd58ff3221eddf9ca1dff970d2a241be533cbb808dc4b12cdb8. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE5752442226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce8d57f5c8a5f8f8198c1724756cfdc4fca07fb0f0564e709fe2b92f3020092. 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/SE5752442162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88d56dbbda05f385156596bc89d3b399491ec9384b7ee09bfe28419335785cc. 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/SE5752461831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5401a3fba62a15c9a7b2fda1bc56783266fc2893c38696de92701904eaf87d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SE5752442278.
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 0x8f615af83fb3d8ef2a81fb80dd261a2cb7c987ef83bad0c48db59016f7fd613b. 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/SE5752442304.
Absolut Freak Compilation (Mixed by Frederic De Carvalho)