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 0x7323d591b642fc70e575dac9299a96be97c00be3dd0ffddada7f59d1391978bb. 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/6c1b7ece-369f-479e-84b8-ef0e164f9e01.json and https://artists.proofprofile.net/proofs/artist/6c1b7ece-369f-479e-84b8-ef0e164f9e01.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 0x9538ecebe339fa3b6c4e10fd524eaf59d681c1d78859fc70e34ef86268832a83. 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/NL8RL2440351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d47b00656862854355782542df43cc578fe927dbb7462031650e9dcfcefbd3. 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/NL8RL2461576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08f9687307099089dae45ae1b691ad8d8db2e5d9c2801d3a07609f467bdf1a5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL8RL2461578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac138df2c04c1c06a6f80ec120090a68230afddaf5e7d055c71cae8ec54b3f0a. 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/NL8RL2461579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc057b7c4771cf13341732c3f3b5fa19545552361731e5d95077987e84d1523eb. 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/NL8RL2461571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01367ff51690eb1e53811dc3534bf59237448ec1577b932b7f4cf1cfba10bbf5. 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/NL8RL2461572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe244ecd9a65dbdb534f70440a9fd2e2b3f39c35243374c77a66d7753ae4c6ad. 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/NL8RL2461573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881c1c8699b1d8bde55a9b7d80a08c7c608b953e10f6fb90c07c96e2283d1591. 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/NL8RL2461574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9ca2ed8e08a0d2e85724eebd216ea706ed5bcdc3a35edbd4650feb996cc18f. 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/NL8RL2461562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03220345e4566980c48161578a85a3bfa834c6f5bf51b526a745fbc5eb9652c4. 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/NL8RL2461565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f4c4cb891691370edc91a60066c4104670174153158b8337a0da3270ecc24c. 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/NL8RL2461566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283271836213aa5956263b96071939c8936b78beba8585e8d57326da137b5e18. 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/NL8RL2458470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bdfefe1f3ddacb02990a0b1566da1d080ca7fa9d1eab31bf78e2bb687fc62d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL8RL2458471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda80b7a21e2236d025533d6743dc167ab84fbaf2d256db140c2b92ace87b520c. 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/NL8RL2458474.