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 0x7b47b690f86f97bb97c49d802050b6c29dbff47e7dc882dc44a5ba920f062eea. 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/eed8561e-18e8-4dc3-b26a-bdd82d3e32dd.json and https://artists.proofprofile.net/proofs/artist/eed8561e-18e8-4dc3-b26a-bdd82d3e32dd.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 0xaa26c73bb3341a1e05e7ca9bb692c4d14a1aafbd1adee9b205e8bd6800749b4a. 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/USUM72310632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88977d05bca6bcdcd8bfe3aba5f27308c76474ab4c3299be7e486f3fbaef94d2. 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/USUM71113573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de4797759e262fb4a8cd0de9b19b61bc91f505d22dca945953f0a3f6a88e1f3. 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/USUM72311283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb23824b8281876e8ea8afa33eaef0111d2044a795397ae16c8fcfcde9eb1ffd. 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/USSM19100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b88647e39a8a76aa48cda3b1219acf5c96883320521f8d861bee6b9733939e5. 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/USUM72312409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4ffd9df57116e52d0718eb049a851417ddbe112957e1d6a54afec660af36d5. 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/USLIC0701161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43f6b8d18299e2e5f5786593968768949a356f60866a1494990b80ad07d601b. 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/USUM72307516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6a3f29191d3367d0633f88b38a31620d1d9ccfe89299eafacc03e78993e9b3. 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/USUM72307507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe017efbf279adecb1e6896ddbf6e89d0ca0ce97fdeaf06b266f9729d77bad382. 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/SEUM72300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02db879215c4c4bd9f5e8dcf161d31a4739dfea1f1ebd09cee0e2fe11621c5f. 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/SEBKB9629370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1335769302e4fa5d54183e04c7b59d662c1eb5b354efefa1e399b8e21ebe27f7. 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/USUM72310875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db8b88ef6e5900fc8e1a4a06c6be7d72beb0cbc35f45dd57ff44274bb6bf412. 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/USUM71029357.
Pink Dolls and Exploding bombs | It's not about the money | What was I made for?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6498efb1a3f8ef421abbca3e22ca5b6463a434e938410fd93d7b14772077c50a. 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/USUG12302753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6498efb1a3f8ef421abbca3e22ca5b6463a434e938410fd93d7b14772077c50a. 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/USUG12302753.