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 0x46a26551d78ba04dd449979051b8403661ea25d2f5b560b9425bde53d23aec3b. 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/fe9aa52a-8282-42b2-a7e2-9016816a653b.json and https://artists.proofprofile.net/proofs/artist/fe9aa52a-8282-42b2-a7e2-9016816a653b.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 0x75b4dc20080d0a6a264a06fdbdab4600d7b61bc4830c6a924314b120961550be. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/AUUV71600105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c281f1d1562d01e6258785b106fe07cf24d308266c9fcf3c416bc632356dd56. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUUM71800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bc2a229367b1499ab426cfb0fae8ab3deaccef6851403e085893c9d04cbb0d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:18:39Z), 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/USUM72023418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf923ce32849dbb3208c64025625b3a8539b419b4d410fa73369581ab4d6e7a6f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USUM72019393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1146e411f4263adfd77100f984758cf7f4ea7f508411f05880a393eb9f8692. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USUM72106286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73ee157b36d1f7164fee832290b23247b827aa2fcdfb22204d04e8e48efa33d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USUM72106287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a467b028f7d5ae6e41de3bb62c34c5ebee2655cdff76d39f03b780dfcdc62e2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:48Z), 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/CA5KR2369107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302d93223e589a0cd1fc555d4c8740f37e1037442a90de8e93ced1586669877e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/CA5KR2396144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8f0480554a8b90c6cf8a1bbe3524faf512e006ec53156297e8e3df232050fd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T11:59:47Z), 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/CA5KR2377965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de395b50dc7f2c8dfbea73a6e82c366a9a5794716b5ee76d3acd1f13d357a01. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/CA5KR2402016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ec6a7bacd457a05add35902aabd8461b3b54c855b05fa00c126e0eb4a94182. 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/CA5KR2402017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51b117b66d1f2e7c422022124dd0bc399c5d31ab032969bcb7620e0c1aeb333. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CA5KR2402018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0fc4e1bc50b43d51ea34277b694d1c3010a094fefad5427dcf41164aa47640. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA5KR2431212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8f0480554a8b90c6cf8a1bbe3524faf512e006ec53156297e8e3df232050fd. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CA5KR2377965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75d4c954c482d460c1ada4097ff3280a2975b642678100806febdcfdde943c5. 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/NL8RL2428293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e9973e63152818eb901837597eb38a0d9250961bb71de40d0b286da4577ef9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUUM71501841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25c1a22e6157072b59d89ae85526d7f3eabae11d0c33e8af5c7bd79e4d3a596. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUUM71900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e17c3802e7e15fa420cdcbcbe943c6c451c1beaec6d4524a22d58986c9097a9. 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/GBENL2303805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f85be46c58f9a1bbd005712cf9f18a3ebb671f551b78a6ca35bea44fca86095. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:11:28Z), 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/AUUM71700834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e9973e63152818eb901837597eb38a0d9250961bb71de40d0b286da4577ef9. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/AUUM71501841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e9973e63152818eb901837597eb38a0d9250961bb71de40d0b286da4577ef9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/AUUM71501841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e9973e63152818eb901837597eb38a0d9250961bb71de40d0b286da4577ef9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AUUM71501841.