1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x7cb26d5084441e649e90d0a393cc31da04af14a17cd4caf99b5d82b949978e5a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8015b80a-5f00-4704-9563-a3aa34922113.json and https://artists.proofprofile.net/proofs/artist/8015b80a-5f00-4704-9563-a3aa34922113.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x09e49d68d046a696cf709a36304bbf6f91ae5a8b10ac1a066289d9bdfbd5e9bd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBLFP2511814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0604736db899ab63d6b33c4522372c293e4eb0f0f220ef8dcf9e62967a5eff. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBLFP2511815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2681d676a70d77a3a74de7f150d219c77dd66d7cd2d24d7b52d50a47ce477ff3. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/GBLFP2511816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0443830e104b5d444b8ce36cdc584402880a3e761953164f2d4ac10e0e08e927. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBLFP2511817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600a58cb663e708881d1db73d9f9e856f4500b2f24f7a4882789a9b9eceec515. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:15:04Z), 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/GBLFP2511818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e45dfdf81cbb8580568b8befc95d12d1739cfe8fc7c185d76f901cde34f164. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GBLFP2511819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179c2c5cceaaf4e971de4f15a775bd96a4f80232df592c95a19101aeb5d646ac. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/GBLFP2511820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7fde1e081960ef5894a8dfd2fd2e5e53cfa0ba5642e73656b388711410fa5d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:52:38Z), 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/GBLFP2531809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6ae87f3b9b05743010337b37c6b698514bc85aff6125bb755fd43b20f3b67b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:46Z), 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/GBLFP2531813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e915b4687d1c5db0a9cfffd2381e331ef29589b8dfdc65a38cc9967e49cbe4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLFP2545493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c880ff36ed93e20d1ff7a96ceae83623358dd049aed3fa21ec78057089bb785. 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/GBLFP2545496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be4d50b2ab016fe5a0b1302dbc6cd411fc1691ba45c25c129f2754b77ee3756. 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/GBLFP2545500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6316757fe2ec8e80538449377b2fe78b34cd366c2616a53a1ab66c28d6aebe. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBLFP2545502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01a30bcc8af69c08b4c3e1708013e678292ec4741732e2b062191479417e0b7. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:19:21Z), 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/GX53U2590992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881d1678d535f87d4c65d16d3f7624b98f01a110db09029be465bbef435b1563. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX53U2590999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3533b8d4dc99374a15bb60d5654f1f7a32309500be69a99e71b787730f1a2195. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GXHAF2554992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf774eb8de19d9525384183ba699727ed9b0d3a9089bac41b5beacffa9285827b. 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/GXHND2530091.