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 0x228f0d4a4cb7c848cb6162535625d9cd2d38d4a1ab0646c0d6a4efeae24928fb. 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/9ef36302-7491-4400-9805-590ee012579b.json and https://artists.proofprofile.net/proofs/artist/9ef36302-7491-4400-9805-590ee012579b.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 0x5d359f5b771171febd81b3919a2c816faf43676b6a403e0b6a0a39d641329577. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BEB019372923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36886a337d13ef28d4708bb3df80e785f2cb94e612937670a30ee20eaf56be8b. 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/BEB019072901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296e36b3bc0ab6c786918f8270ca39c7a1547d9356a143e6cc18251ab4dfc408. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:22Z), 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/BEB019772918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c24260d90135dc7cc3a740414b9ec030c2f0a687cff403c391258316eb6c37b. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/BEB019772920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b2aa7617aa1b816d58d101c2fad24ae8970d38b077969ad1e74492241f0b57. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/BEI281000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee541282a82e9c494dfaa05a89f0874eda0cfd1271b180dafd4d5f08d4f3a85. 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/BEI281000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf035171109b6aeb722b24a81ceb6ac676a5a88a78fd7f847b3c866122fff755b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BEI281000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3c3b80c7346610ad2493b0b38f64871342a739a20cd6ae78c1bee8f10576a0. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:18:30Z), 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/BEI281000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98ed0b9ec1e3445bb9fb5dd90687d23994403c811c7aa54aa47c44bf6fd3b6c. 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/BEK011102378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8687da0d35cbe6dd62653b4866cf9461b55b87c47eb9fb14b4f3cfaaa2a31a4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BEK011102377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc99fcf3bd2b28c753a5292364f2546af47102a040fcc4c9cf6e03e9bdf18e4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BEK011102383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51b5a712008234bcd9ffea9b5959d3773d5977ab751c3ec5cf0407e9ae0e3e0. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:58:58Z), 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/BEAP81330004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188db64facd3a77321c014af986090bfe98abff719e8170c48b31880842356d5. 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/BEAP81330007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b521695084fc08e3aac51cdceff2811aa4b1bee8a0ca131e440a9fd75e2237. 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/BEAP81600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee9153a963bd830983af36d490bf40970ed58364b9b07ab3695d1c20b61311c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:59:54Z), 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/BEAP81800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2b9d922cad25b22509713e2f54f43be4906c867ab456fb318c386cec6d9685. 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/BEAP81800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ca3d52ab2f39e4e64dff2dd104da32ca4addb49ac299f77d629997d3c2e065. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:11:08Z), 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/BEAP81210004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d52344a9cf24e8496cb85f15f75793831e9743680083e6a1bcdbaa82336518f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:20:06Z), 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/BEAP82500001.