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 0x35197096fc5ad2be59df6f60375a1f516ea116e8c51e9705d4f17bb57f54ce72. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69ca327d-46e8-4e75-a06b-677e59374127.json and https://artists.proofprofile.net/proofs/artist/69ca327d-46e8-4e75-a06b-677e59374127.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 0x21f47c7f2264b353106d08a2eb229de16247543738d7f193651c3a7931a14424. 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/CH6542425886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8c0139c53974450161bdb653e7c4d1c37bd824305ae66c928d7fa890a9e32b. 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/CH6542311618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2e0f8c2002071176c6c81e8e53b41b77197e413fbb39e257d061bd10d9e68f. 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/CH6542425885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a009a31b9ec42bfd4ce48d0f33987adbd03cbf9548705b466d5a915923eef7. 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/CH6542339906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b38fdc11ecd564bb9737f956a30894a6737d973686ff94fc70a933417579ecf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH6542425888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6182c36264a7dbd84a6b08d38c24d81f23f7583f74de36716ee3dc13493ac3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH6542425867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118930bd946d2dc310adb423d6c9d142bb4568ae60646c33385bdc76fd28a2af. 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/CH6542257997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58279ce126e7d8efdf994c1bad46a5d7e3d4eb4b5b510da1b32062306ab86dbb. 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/CH6542287203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833cfbc2f10c3abbd6a1bf940f8bb0dc1e460774f174e4719cdd2118c328b811. 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/CH6542295246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d45ed0315b13be4a00b565127a41b07aadf615e85fd96c616f5b2b93a7b3324. 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/CH6542220937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b090314f28d1d9a8873f5318b84c7f33b61ab9d506ced7ac40e11c37474fd95. 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/CH6541679313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f214d40d710a414eb3f8a22ed6bbe9a1e8431dc35b4b5989015ecac1bdee5e7. 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/CH6542185931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa05b1ea268f8d00b108b63cc7bd6652dbf7078b309b53dbdab41a650b9131d. 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/CH6541703502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9e83bad9ed154dd0e805c9fd91c2664fc7304e3a83dd6301cd8dcb1e14649a. 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/CH6542108258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5482f86951de9fd3027a6a4c60adadcb02f0db4c3e36605899066dc9bfc7446. 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/CH6542164603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6182c36264a7dbd84a6b08d38c24d81f23f7583f74de36716ee3dc13493ac3. 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/CH6542425867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8c0139c53974450161bdb653e7c4d1c37bd824305ae66c928d7fa890a9e32b. 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/CH6542311618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5025aca6aa3c19f5dd0252d61db8c70b64d2ea90b597af4f77f2e577a5cd1d6. 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/CH6542213960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b090314f28d1d9a8873f5318b84c7f33b61ab9d506ced7ac40e11c37474fd95. 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/CH6541679313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5482f86951de9fd3027a6a4c60adadcb02f0db4c3e36605899066dc9bfc7446. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CH6542164603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ee4cc995453a35badc022c60427226a98a277e70472f25e82d66f61e5671d4. 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/QZK6Q2218086.