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 0xca89fb3e0b7691ed2ae870943bf8f875c41b2605d1dff5d5c9754bf4bea4d090. 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/2820a03e-0798-4599-94c3-4dadc029c80a.json and https://artists.proofprofile.net/proofs/artist/2820a03e-0798-4599-94c3-4dadc029c80a.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 0xb745476b11eac9a0467e9fbc4d4330f637d0293e153f1109c40ce2c3deb9701b. 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/NLE711600169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e7452cc79d6f87c136289b6fff11688cdc2da75c8ed332cec293585f292b47. 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/NLE711800432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1a330a5cc762bc7c404f180fa3b51a03d229fe065196c09dac6bdd994324f5. 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/NLD682303751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41039b00962eb2543beb7f8d9fdb0d39d553c2aca4460df814b946a2bfb204a. 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/NLE711600155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a175b21cec0d2cbb2dc28ebbc2939c7e12161ac5a66f7d1bada897675cc581f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLE712000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdaebfe7e9c120ac75f757df8659d1373c4bf091a36cdd2050c6f21fb52007c5. 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/NLE711800448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4f4432547426bb1b52eef92a02eeea399ed65d3d30604a8ac308e63fa137f8. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/NLD682100898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1205748dc043ff8b58e8f7dd6cdcd67f79fea1880431fbad4aabb5d33e4436fc. 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/NLD682002567.
In Search of Sunrise (Solarstone Pure Remix) - Mixed
Nocturnal Knights Reworked & Remixed Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387b59a9c46e2937bc6dde8c3567c706f8c2a0a9fff5d2f99f3e1ea2775ee6d6. 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/NLD682004070.
In Search of Sunrise 14 Mixed by Markus Schulz, Gabriel & Dresden and Andy Moor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059fcfd5016418a035c36d14e00033ddc705951cb98428237865e9ccc3bb7e37. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/NLE711800296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451195f6e376288d63e8a9f1239a47c3af6aa555e52c71ee78f34c07b43a7d32. 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/NLD682401120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385daf8e22be5fd4a0e7fc045529eb4c01a023a9ae28f8e00dadf527e0e85d7a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLD682400975.