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 0x5192103a62cfd9751c7a1d03ac9439fcff31129a80b3ee13c2535874723755c6. 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/7840b0d6-6c03-467f-884f-c39da2681178.json and https://artists.proofprofile.net/proofs/artist/7840b0d6-6c03-467f-884f-c39da2681178.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 0xdcc028b7a86efb2f1ca361870c472769e27ffce5d7e12c73f786cd3fbb7ff110. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FR59R1702397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e79825c0aca69250a37dcffd88792e9d662edcf56bc117aec5db8c7d7d717f5. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR59R1702399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501025350269b1c3dd86dc0702fbbe1abd51c1a76755f68a376e0ace83384a8d. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/FR2X41994096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38934b719679b6f30b7dc438a813808ce98a7b2ebb06555b837be9f959439f3. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/DEVS22001021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a35e36348035b8681868171b7b7b521c13decc26b79a383096aa2d57395873. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZC62169284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc48b8475b21fbe643a9b84dd158599700e350c6930cff22a3ee58b32df803d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZC62191839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed59e0ae39912a6f05f393189afcf2a97ae8558e07b218c4e929edbab3e45ed7. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DEZC62261313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d94793ba1980455ff63d5c1a86300afe756cd628156be1b8a5a89ce885be62. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZC62203640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669f1d6304b56f093e875b0a5d9c4a0fc3cbeb76060c24c15028ab483ea5d989. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/DEA762300501.
Ruf mich nie wieder an (Bentastic Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdf81076ac8bfb5c28c02d0903ec527c5b7b4c58d445bbbda32992ac92ac2dc. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/DEA762400301.
Ich weiß, du liebst nen Anderen – nicht mich!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1f6d4def2d208b4e7c2fbefe8b6ab5b5ed35676f5a01c18eb0c83852e48f37. 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/DEN061900667.
Du trägst keine Liebe in dir - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5368af8f987c35ec4c8f158b3b334607b613247135889d73191f82482726948f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEN061600318.
Du trägst keine Liebe in dir - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70630a3ff3bc4689b8b5ef0727bfbe4bf40d836536f676e062a5e7d8c20b40c. 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/DEN061600326.
Du trägst keine Liebe in dir - CJ Stone Sunrise Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d78dd6f4d52dbe0236661918b35ea59bebd43139a5741a5bf66d8df5015aa3. 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/DEN061600327.
Waldbrand - Chris Avedon & Kevin Neon Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17af148bfab3cd5a4c3882a83ed7132b320fcf426750a2fa1cd87ef8d94e7487. 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/DETO31600298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93cd5c0c6fc05711d6225835d4cad83c8e089553c6834139aac19ef6262a0b6. 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/DEQS91800640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53521c4e13ece13fad831b06b94ec81378366e9a930f9a9d2c3a1fa00219865. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEXH42200009.