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 0x5fe9f79de4cf1202bac05c815a4cd44013c5d8dfb56ca56fff5877f524775db9. 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/a8bd8849-6cee-4804-a1c6-56ad143f5b56.json and https://artists.proofprofile.net/proofs/artist/a8bd8849-6cee-4804-a1c6-56ad143f5b56.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 0xd278837148ec15f8a0ca40f84252efccede0d20cdd36c6cadcd8a6d9ac951791. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:51:37Z), 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/USGH80712458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dbf0148c3fcde558950c361b3785c1c5eb95fa0989113c0b7a590e7862e7ca. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USGH80712459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e1a2c6ef8562bee651526ea381d5de2925523b854edfe3bd9f8caf01fbb4a1. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/USGH80712460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0b10a02cedafd064138403b30589a832e01069200ed916db71fb046990f010. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USGH80712461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f0d6e6999dab30354a0c4de43a33661e4730a2e987edfe29ceff2516dc56d4. 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/USGH80712462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb3ce09fcb3e4d723688aa4b81a47e1d65fa069c4e6c060e002c837d5a84242. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USGH80712463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83af86939c361d1e10460063d6dfc46f650f146e5f6c13de700a377b91ff34e2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:46:50Z), 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/USGH80712465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf318c52a0636bd1219ae295c0a280696473a89ac3491aa394edbd2e75d5fa3f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USGH80712466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ba9aef20b28955e8975359068359b34a357d645fc6af54cc750ae58e90727b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USGH80712362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278b316f60f29b779f0a1161e009f74e69cd6300b17d66ccecf8b70afde23a10. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USGH80712364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36a50f0ecbb7a6164c7ba9960d7c8c7ad4f2c5032a908d11e0a5692fea616cf. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:42:46Z), 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/USGH80712437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5965a8488d34c6df6b43423c2e9f74c51e30dad401240c8a164e2a8a5db12b89. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/USGH80712440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a2664dceeac5aa6f0016fd8c54d6935769cdb551f6d9186bcf02ddc6ef8068. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USGH80712445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4636814461f90991eefec072a303c742fc818361f6cee194efb012460cc5c8. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USGH80712446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a3324e474156f1539dd0e6e02048f133d3ea5101332ca8cfc4f76e9665290f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USGH80712448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daf9c391f30d4157ab7c25e6200897f2fa3aac09f07e3f75621568e8f0829b5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USGH80712452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57db891a78c74711bad89ff01a3a62f857a31cee084678a13ce093cb0f706675. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USGH80712453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e03c3b361c283a2e09fe9ca3db02483a6f0806d754964f56e29b26ba868d5fa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USGH80712454.