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 0x49d74cc3c619e4eda71b2a8f66683bbc19f738c11becc4ef3dcebd0a7ccbd980. 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/3ec7ea0d-10ac-48f6-bc88-bb37291f55be.json and https://artists.proofprofile.net/proofs/artist/3ec7ea0d-10ac-48f6-bc88-bb37291f55be.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 0x378f34287fecd0b35d4f7373dad0ff7e70a533d14fdc97feb1b7fdab5257cdc9. 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/QZMEQ2061384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795fcd8cfe4f51dbf23cb17b307128f2b53b0f44d237696fc6928f4625397f3c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZMEQ2061387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bb6786cec82534fc4f830b0b88324c2f63a8bdddc3ca2be1f2416083e786d7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMEQ2061388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46778e38f9c8ecde3490f0809b7c22df38415dbd42d7e968c64e60eedb09be98. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:56:00Z), 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/QZMEQ2061391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be2d27375f95fb2c720c6ea96112f00cf611d3aac5ec42c073a2b466139af8a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZMEQ2061392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25afbfe12f7b52b23df30cb14261efa0e358f949e7d75271d30aaf3fce53629f. 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/QZMEQ2061394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c8a037ac55c2c90ea42ab8b51d1cb6499287ca985b9d1e9b8a7d57b6f4e4f7. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZMEQ2061395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cb208714d63f05c123aeda43ab26a03de83cd57239b056f6ebad0685aa4aff. 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/QZMEP2041442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47204485b066e78bb90602126e2abd24576d9e9e3b807a3cff49de0851f95d9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMEP2041443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b69a01a165c3dc945aff169723dc9812e6d5d9c3b3934774e7b12d12d3cdfcc. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:31:49Z), 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/QZMEP2041448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca38514fe276f1e92a61ab49794238517d245aa164d73115eba2d671d17d6ce. 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/QZMEQ2080367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc77eec200a8284885c498c9c7f80416ee2216b6544a0af1b3cb1e4c2e2ceae. 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/QZMEQ2080369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280da779f1f054baad3fd2ba4b633e1a45046bae3e01b6e36d6894e4951cb7d7. 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/QZMEQ2080370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0cfd341aa1bf858a0bfc9e2b64ff67e063e8e99874542c7e9365753689777a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMEQ2080373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e663bd45f3b0ddc7c20c265cc1d4c13b123ea4e1dd1525fe0267ed5d520efd. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:36:57Z), 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/QZMEQ2080380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce230908c9cd63a8e37bb1dc196efcce1e7ed8c4c0fefd8c223d7604bb6fe145. 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/QZMEQ2080381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42658e9b560d13f195e9fe1870b154747ff8abfd380d90462a28b50042ad250. 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/QZDA62242691.