1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x404c73c7d1615145942adb3fd62ffa7780c54892d267d1d1e36b974d66067156. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89f40609-2d42-48c1-9280-52f72f4834ab.json and https://artists.proofprofile.net/proofs/artist/89f40609-2d42-48c1-9280-52f72f4834ab.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 → block OTSBitcoinBlock must exist at that height 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 0x368592f101b41d11083532b9625ca80de690ffca29b539c4c75a61653dd54f7e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZAPG1750664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cca4685840eb5a0e37bc8094b08c4ffefc2b7e15ddf47e565603122eabfc2e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZAPG1750665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0f7ff83c47dae17303b61c7a4261a5207ebf71d9045129e97570710c461285. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZAPG1750667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f181a80810b5783668b7860d6df73b4d8eb1af96c96fd5611ee1af9c03c2ad. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/FR9Z61800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee457eedf16ab24b4044a579d8c78f50e2d2be294e689c153610e12e62ad49c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA41893812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189e194250079d97fa682a380960aa6314cc602f846eb5c14d8bcde062936022. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZDA61843979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c04b8b8e4ab797bad0e9ba94bd531fa67e092847c98da412c788266d6c2947e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA71870777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351c7d6a789e3476d939f9aa5c6dbf6b5713b0836bbfc14ae8abb85f580551f5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM2PV1801391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc44d7a6aede76b182b67a0b85263b0aae21512e565b1244f261321cb6275a2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZES71833185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc7c03d28b109c83c438b8f9e5c1b99604ccce6ea966caa46a30fe37e8bc776. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFYY1995927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1462312fb783439fa295a4dda26ea5cad88b3d59ec870daaf466d315c0ed3c7. 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/QZHN52057123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9600e6a6ac302daceda3f5c328aa7042ce85abfca79e56b93b812eb8f187adb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6P2087461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f656d60316332ef1d5e2475dcabc96bc9974745f833f6d7a775abbb9b42e4d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA72130193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f5c85b0740cac1dd2a5400194a1f2c83f22c1add35f3266135be2a81604a1a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USANG2264526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47671c6c9ddc4207cf3205760ac530accffb07f77783ce390f5b2ce868aff815. 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/FR9Z62400617.