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 0x656d1f96b97cfa09922399f605dfcd339b54753cd29629c59a6577d4d4abd2cc. 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/41892a37-1d0f-4a36-9ae2-af0592d5d5f4.json and https://artists.proofprofile.net/proofs/artist/41892a37-1d0f-4a36-9ae2-af0592d5d5f4.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 0x249939c7841f2592897328d0748a40d74c17850886914e1ac68ff07a1cde4043. 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/DGA0R2309293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf7f3feec3514248f2433b663f8509574152815531e9f85140b4c2cc1589c2b. 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/DGA082382463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0246e6d32bf93a0fc0d135f584571fea72c1f871a9f0773f045070f58d432acc. 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/FRX872367431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193be1a96f4169e9c5ac202ad78f7b353c64562f60e047433c73164bc28b9ec3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX762366621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f763a53204db9d47030fd429cb2ecb038c5940d2bdeff52f103d3773ba6392. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX762349239.
Lost in Your Eyes (Danny Burg & Marc Rayen Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572ebbf708ef98da2f2550eb69018887b6173b4c06db13ce295c5976b78e4ef0. 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/FR59R2351672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262ce268d06c827bd1f7087edab41bc055a60b3417dafff99e678df2b426a014. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S2359275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e113f83e9c1c667ad8ed212afce0a7429040a86f634168e3ed39dc2765b1593. 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/FR10S2365008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c111536d774085555067348dc5591b871ff04c1a054b11cae2113e2af339fc. 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/DGA072273062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a98cacab36a4647e03261d0704df97131706147fe72ea56c9469fe0a8766405. 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/DGA052214853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc4621c91117ca96c1248c0813bd585b4b365c1a631343e827fecb9f6c15098. 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/FRX762241889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbca503cccf12437c24381a95f5f32ae408f6939bbc2ff9e8a56956f52a0400a. 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/FRX762202097.
Au Revoir (Danny Burg & Marc Rayen Remix)
Au Revoir - Danny Burg & Marc Rayen Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6a7cf456c0aaca2c951feb4ec1fdd83db7d00f6d7cba60c855e11050a17d32. 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/FR59R2276153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1e1ba0df0546416d5961f61a2299c2904869471c6fb0b64ceec7a06875eee3. 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/FR2X42286451.
True Love (Marc Rayen & Danny Burg Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d65b8c808251438311b439bbd720ec3b7c00253569f23ff25693e2e39a45c7. 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/FRX762165055.
Stories - Marc Rayen & Danny Burg Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc792ddfb300a421e71af47f4b1a069af6866e70d706dd911e476580410ec1b26. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FRX762165056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaada68a895fe4a6584aff9345e972ae7ccdfb2e29565affe3868688f1a6a1568. 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/FRX452142335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17780313d6021eca30db6367aba4841e8e66f297fee36034261bb1d84a394880. 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/FR96X2127490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91eab0fe01e4217f16ae9c05b2096f67595b6c186908df39b9351c8d498461ec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S2193859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fca7f4e5cad24e753beb3ad2d6c41e12bc4eb30f53ebf35ef7d8fd7601c67f. 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/ROCMA2413505.