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 0xc5ffc09e0f59d4f2739585c156a39e9074b172e38994550d4d004df6376d3b3a. 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/772fc183-a926-41cf-82e9-d791637f78f7.json and https://artists.proofprofile.net/proofs/artist/772fc183-a926-41cf-82e9-d791637f78f7.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 0xd8e4468b25007831df4dd37f14fccda73f747a7efdb2b1189c0d3ef935c0723c. 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/QM6N22470124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1a3584b77065ab355956b46dddb2b524316d580a4827ac54f4a630d1e3bd6a. 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/QM4TX2441025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94ddc91276b52c9179183c8aa510d06c432fd7cc171611336d7d118ddf49635. 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/VNA1M2243584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef455af808a469ae1464a6ce78bcebf9761fea603f7e5f699e75d5497710b45. 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/QMBZ92375583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423b90c53ff276fa503de40accb935443dd8d915d30e1a9e6f5213f98e5e56f1. 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/VNA1M2202521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d428d965616fb5aaf739819f24602606c90882f9215cc0356d617835a3bece. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/VNA1M2200178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599f9aae5f661751a749828cb9c79ff6e16bf0f82f363e9655930e761968f2dc. 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/QMFME2256605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98bd632278471be29e1610a4c176c361ebefbaa20909c880a7aa7bfe1c147e2. 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/VNA1M2103813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4017b08a74e69ce7a64e9914694852c26c0c21f42f2cfba7beb71504e74c4a. 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/VNA1M2103817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590b036d03631e54ad0982ce03e970b8609e0a26d50c3854126ed9ec43c217ef. 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/VNA1M2103809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a1117e4e76a1ab9883e826686897ee7b919b2ea342fc7c53f5d532313bd472. 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/VNA1M2103799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55100fd5e802f28d571024875714d9f3790293965d83b76a3d3c01060c4e0cb. 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/QM6P42227045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa3164d0b3e72e2fd20934f9a1d76c4a45546c0fededc60a299ddcb4ef28279. 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/VNA1M2107097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9e8938a7233acb29f9e0df85722cc2b8acf0e7719acc706e4dbe39c716c453. 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/QMFME2256329.