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 0x26d5f73293e2f4ae515d76d5182ca6351db03831e840baa2738268fe361f8f55. 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/299620b3-f366-4806-b282-acae7f2c5f27.json and https://artists.proofprofile.net/proofs/artist/299620b3-f366-4806-b282-acae7f2c5f27.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 0x3f1a665d25b95571ea1f219fe264151e5389817bb68cc886cb02a14665ab2a4a. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/BEEN92300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ffe8cbcc1dfe2b6606f9c248aae1eba5356969efd0351562d39a19aad00c27. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BEEN92300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff7bf2ce98e5435e7ecf72ce778d67b70a5fb008d3ff540bfad009898a95d53. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/BEEN92300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd5c2da0720e252c2008ecf5c410d37b52feb20568f7a826c943f17b5293c08. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BEEN92400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cc1f98c818a23933c6f3b4bbf4ba8c6a040ab748eac7f56a09bb235d5d7771. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/BEEN92400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c5ce45dde8b7968d3007a5d090a984e29fa7a2558eabcd12100d7b307912c2. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BEEN92400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f695aa3c041a0a20c408c55c3fa301bab40f9f3aeea9d5b69bc2e783f6b7041. 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/BEEN92400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4014f990af24429d3ba289fab33b95606c4d7e4fdf5b95c57b36cda16a0e14. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BEEN92400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e4398e022eedbc7850f6d1d4d5faffaa8f8a3033e34216d9da044fc32b932b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BEEN92510003.