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 0xff23576a7ababb8e4c6ea9dd49c8f9f99ece36dccdd5dd6c62d16c0d0ee5b557. 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/eca54bd6-2421-4113-bd63-e91b665d2fdc.json and https://artists.proofprofile.net/proofs/artist/eca54bd6-2421-4113-bd63-e91b665d2fdc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In Beautiful Landscape (山水之間) [Instrumental]
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 0x716bee98676fac15ab0abc5423287ceed7f846430c85b307a84af68ba72d2beb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE5752067931.
Nandemonaiya (From "Your Name") [Maxone Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930006412970bf40ad196420718e65017f0ee540bf9744bb5d17a03d1a392b9b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBLLT1900257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930006412970bf40ad196420718e65017f0ee540bf9744bb5d17a03d1a392b9b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/GBLLT1900257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb617444d3456a7a679ef78dc25e45c94a677d8482a871281f36c5ff2956017e2. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/IDBMS2391008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bcec4e200af9cee49e0909ba30e653a26559b7edd4784b98dce25a5fd46d0d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IDBMS2391036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd283ed8b16317c1e8c8142e7fad7d93f485748cce56cdd35fd8883047ba0b32d. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/IDBMS2490035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b757184a7e3d58948c6fb3135b991eeb425492cd8b0ab5653fed1a53fdc3825. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/IDBMS2490038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbd7134b0d6fe70edec1f4b24317d3a1fbffd64ccbceafff4f0379aece49669. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/IDBMS2590002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7049e0f86868208a53d19b168300b4026b88081c60ebd0e5041bb7b1945c66e. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/QZMEM2598123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6d40ba61bf358d0e4bf3eaa0e8abefcf18868abf7cc2e38c159d3597e522e6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/IDBMS2590005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd185655419fba9f16bc1e19ff89ba1832d3340a3309f800acf91f87b14490c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDCHD2590005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7cdc184f7677beaea5e960cb71a1bf2e551bf1a6cc9c4d632cc6ca04ab879a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/IDCHD2590008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba64d660cf41e4894753b3e0aa36023b5a762e015f3c88adfbbf942e97589453. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/IDCHD2590009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec8b9bf6de4047fc495e08c7ebdb75f3496ee93116f745421f5907a58fb981b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/IDCHD2590015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8bcd762e07321f82dd21b2de0f9a93ff77a7f9645604650432c25eb300c5aa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDCHD2590016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7387e25b642f0af68f9801f043c86e41468896c42f47ae4d1596fbb20a0ed3b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/IDVKA2590044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd651ed8360f88226e8b70de381a4e9662bbbf16c680c68b27516bceda1a4c6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/IDPTL2590024.