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 0xade3b77cd3b9f138d494dd0d973377d33fc1ce391629b12829746128aebaf262. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c48a03df-2e1c-4b19-8075-4f6c03f1106b.json and https://artists.proofprofile.net/proofs/artist/c48a03df-2e1c-4b19-8075-4f6c03f1106b.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 0xf247bf1aa35f5b486199e6767fd896b9c052d4f54622f8c55de3d5b8aac78c89. 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/HUC8A2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa315e49514bdda1b1b9a54cc204bc6544e3f28464082b6f8fc5ea92a92acebc. 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/HUA612201245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df981b0e39fbf4cdb28fef6c109c1a1539842108c15d05fbe9ec4d3b10b6563. 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/HUC8A2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec14af58c667d95d112750a966e8eb29053c8a47858a3ce3f392b9e37dcc9d3a. 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/HUC8A2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3342d58359647eec6f7dae12442f745e33ee298faf36ea563fa9d908d5f01a27. 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/HUC8A2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00280193906877b3fa43af7d0dd687a44bbc74c2484ca0043cbbcb2108efafb3. 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/HUA612201242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfcba84fe373973560bd329cc067f7b6ad8317ef527f038b27b98317defa199. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HUC8A2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba246372b3205ed09ecd553dc06a9ee9d78c55239ec52de3609d41fff25680f. 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/HUC8A2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410097d1e988da13c37973b0b8f17e0f35561324cb4cb9e28ffa85797785fe94. 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/HUC8A2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d2e8a857f9949151e5c3eb5b9a666de7d9643fa984ff56ced2760ad5935e2b. 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/HUC8A2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b3f4647dd53db7a1c30dcd548597186de610e088ff5b869e47c692e2f5388d. 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/HUC8A2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cbfd208193ed6e8ca4f86b19f4810231ac5858565ed1c3478401d1a597fbd2. 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/HUA612201256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58cea2c952f31fee23a89dbd447a64426d2e869a491782eb5193c9469182672. 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/HUA612300945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cae45bb672c7be0d872bbc1e89d80b65b4292696de26496df698ff37b497e5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HUA612301810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07a097a4d5dd2018079f67dc06578acade17e6f07062f6952faad481e4b29ff. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/HUA612302527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd798bdd8bc0d7a717f2d53db4baffda7461521eca48ef97a97249e09964636. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:03:01Z), 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/HUA612302699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1952b8946424cbf82a9c6be89e1e2ccdc9487ab6d70781fbf50db2b319bc50e5. 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/HUA612400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1918381e57fc3766c18b92c4024ace878187d68d04c8a97058c06da165368496. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:12:36Z), 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/HUA612401166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe709c19a73dc295062402c58fe885c07b837e89b3da8e32c62a020659937616b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:31:33Z), 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/HUA612403149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae140fc9cf2aaeac6c2ac520a8ce4dd2b9388924de3fb763634147117e6a13b9. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/HUA612500243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8b2ec115cf579dd02fab0a0b81b97f8b826b7a1a461700f8cf437f99397cf4. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/HUA612501912.