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 0xac6a67400a13b031330c3558acd35e250fa60bc82a918be1ee6364d9cd63be8f. 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/d57161fc-4480-43e1-bf66-68299e991616.json and https://artists.proofprofile.net/proofs/artist/d57161fc-4480-43e1-bf66-68299e991616.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 0x355c5e04add428b54d4056149213be9b758811ee1df3410c07b502d18c69b722. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZ5FN2163309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e480105e4403e02585086b558733d487e707a77b0d27d701c816f2e8ac7a16c. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZWDW2351793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df4b8bc5675da675cc68bd6a8ea01042cbb149b6c75b8b00a39f24a209dd309. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/UKXN22332897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcd39a1d65e3b94d9564ee9eaa5c35e35b775671f275bdbb20b1ebfddd24497. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKXN22391300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcd39a1d65e3b94d9564ee9eaa5c35e35b775671f275bdbb20b1ebfddd24497. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UKXN22391300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7a50c917abfd9f11c5da6ab731860bc5fe1b447b0064dfe2a6d99d27467108. 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/GX3Q92490769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ddef0881965d2a48fe4799e2edfb69532e9c6dd7b2a7437c6373b6f96597d8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:55:54Z), 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/UKXN22447342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888422cd5cf8fc11c000921c57bd6ba0b66a74537620b1e2a977821511d0f69d. 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/UKXN22447343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4bf64b4eb05b33f202aa5cb6f85f828e2f1e1bc6534f5f221be5da11a14a8e. 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/UKXN22447345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5c5c4f24aa534905ee8433824f6d12c48a2c793cb7f6095b545109c8c79d9a. 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/UKXN22447346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b03a6fac8a04e0c0c28bff12501a9f21b59fc6ec81243512570702fc3aecad7. 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/GX3Q92428201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafc0ad8ffbc183b30af9ddd73b00db75cb75c2fd035ecad2cc79b8176230b57. 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/UKXN22447347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2495c7fcb7048d9d21484563881eea354d2ec4c0be10767308f34ca80c90e735. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZN882405747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b315eccddfe160cb3ce6eb12eb3d95156559e1bc7d66e0ac587e8b063c44e7. 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/QZN882405748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d3dbc8b58e895daab4a1dacb3bf46260f92fe3b14c66d81023cc1ee4618615. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:40:51Z), 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/QZWDW2587670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7d422800b2a228554c07039925aac2e6b65b6b9c3f6993c1dcdd74d2c423fc. 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/QZWDW2335861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79a34da317a5876dd6666d46ba5b193ca61b5768a6cd7b146a00d512260edb1. 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/SE6I32403915.