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 0xc91a5bdb6fb60962e66beeac44ee6e3e4610d448c076779a0a915d659614e008. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed69000e-f9f4-4397-bd32-83e7224b202c.json and https://artists.proofprofile.net/proofs/artist/ed69000e-f9f4-4397-bd32-83e7224b202c.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 0x21d99ea7243e017df91f7ae875de262f9d5000b54fc6e6228dfc43286fc32937. 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/JPJ902300850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09f34f9bc14355dbf1f93f86ac64856f4e616c0c4b61f09c51a27c8c63dcbbe. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPJ902300860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502ad8e8c85e1ad179e0d7615bb084a8863bf71cb92e3ea1de825824e88c22e3. 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/JPJ902300870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf5d42ff40ebed1d6c94828a1667321cd884d5fab5359b2c80e18eb2139ffe5. 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/JPJ902300880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53709675390c5a18b4806f5ac3ba08e92fc41bd21260628d26317a7dc8a2a054. 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/JPJ902300890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c161f4b269a93bcbebfc5895c78de1da70df92b2471ea1f60c16ce784d3bf3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPJ902300910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39297378d7f82e3421b88642c74f84e29d8308c613539edfef3c69d0040b6db6. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPJ902500470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa087740d2936f5d07a2c942210d39f7161450419f166c9ef2a399729b3a152a6. 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/JPJ902500480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c7d41adc39664513e9291053ab03243da3c5a1d797809e8ba923ba34e849a0. 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/JPJ902500490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4342f64f7fd476d893fe113cbc5b027938b08595a0d00ecf0e3b03577b9f7b. 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/JPJ902500500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2fc762e6022e6a5133c752818757c622c510d4eb1cf2e70e390694cd93e27a. 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/JPJ902500510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d4a19e6732f742018609320414fa88eabcb2a98db6d53c1d9c93ada76d3b4b. 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/JPJ902500520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafbb03b405ec1a9a216956967898fce15e3db0d04fcfccd945ce1520b1135f6. 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/JPJ902206550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd19337fb0dc6c3e03eb01e936873725b48bffb556ddc335df86bfe00e87a3d4. 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/JPJ902206560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c6d22b2b58880c9c1e67e94c2e6b763afed925a8a5f5659177839fb40c1f1b. 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/JPJ902206570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92355948b78786e79d3a56d8b39ba2d5bb12381984d665f03824f36be0379fc. 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/JPJ902203950.