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 0xb2a6c2e04d90c462a2375b81fb61ea03cf10056f28e76afd0e7566e88438c983. 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/08d80f45-1f63-4360-83b8-14813839a48e.json and https://artists.proofprofile.net/proofs/artist/08d80f45-1f63-4360-83b8-14813839a48e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hairspray LIVE! Original Soundtrack of the NBC Television Event
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 0xd4d2835c7625666bb42fd81afd0ae111093b7b4151dbe33e60b88a3a1d87fab9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USQX91602479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb878389804b9bd5a6723b2ced1b0b13e69e84a7caa003068699d2206c92bde4c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USQX91602480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7744a54041360d92c1f0db33fc048fe01d96da146a13d49c89354964364c001e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USQX91602481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84042af8e6fb85081b08b63358d929729228e43e903d4c893f28edb5bf961b1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USQX91602482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe296812ff7120383bd165c16c94f32654ac293f98191bfac554ea6bd8dd6f735. 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/USQX91602483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcae0f98e96068caf4b90fe92c31fb828ee114bae320c208ca138c4ca51ec41c. 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/USQX91602484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b0f8ce3ea043374c5dc21c1cc3e42633b04222f792ebc9cd9777a5c4a8c878. 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/USQX91602485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcaf3ff7b7b26bba78b2404c75149c3f41670a162ffc71b0de39ef5e82021c2. 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/USQX91602487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294da8fee1caae6acf4f8aad479d56ee18f3ebadf8632461e7b3698b72aeca94. 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/USQX91602488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd6f03e287e0a0c1f1f7456c694747f73137ec78982bd9f40b52b1b5eaff6a4. 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/USQX91602489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2429bf2c8568a26ddbb486b2e9ae6359c81b3478cfbcec8a5fa8b91dbafb33. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USQX91602492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a9846c4ab47ddff9c1376405066b57eb999e466e93883befe85421e8ff5910. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USQX91602493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b293450519f8bee3396b016bdd706c593a1f7f0284836f024b9502fe01ee32e. 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/USQX91602494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a57f8c708420f91337fbae8106639725c8085ddcd8b81b3535b722864bcb75. 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/USQX91602495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c660207c654a2931df48cd0c548e22e6e4104b56abc76250caf849be996553. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USQX91602496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a27701fde451e8457200e91880722127dc8d135d67e145d1f0b779d227ea0c8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USQX91602497.