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 0x5f6ce3d01b245f230df6631105f53834c8aa41a56f348edac6f089fa4c256052. 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/ea12ea07-6296-43f7-97e3-2b01d67e19c9.json and https://artists.proofprofile.net/proofs/artist/ea12ea07-6296-43f7-97e3-2b01d67e19c9.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 0x00477196b400b25c8a9548d30b73ca6a2b85eb3ec1d48b490f4739efd29ea41f. 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/USJ3V1439357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5660b8ce63919f6046499c77b92e6a24547ff7b46b9616033d40f927f1057d5. 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/USJ3V1439358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79846c83e3160a687a47dbb09cd2592e27fd31d9967c73c89dba4f2ca2b20b55. 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/USJ3V1439359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e77ee3e427e5cec579b041be459177dd792d9abeaafa1a24ad07774f78a679. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USJ3V1439360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b45047f33833648b23ed41c3adf31591c87da14b819b899aba7817709ad5b6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USJ3V1439361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9289aa64b3f93758cc9a324060d19ea54b073e7e8c141a500759b97fb7d955. 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/USJ3V1439362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93c4761d6f66a00d539d3c2eb4578c75d169a439041b0f1c3aaa5af56971512. 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/USJ3V1439363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7b66ae1a295de8e135c35fdcd9d05f235f87abe3d1366f508f347f5fda14df. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USJ3V1439364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d589748c094b7953ec09192f5d96073194d903f2e76b6d5f3658fd4ed7e185. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USJ3V1439365.
Humpback Whale and Gentle Thunder Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8d7db44d7a13825db5a3c2872dbfd4bbb4f057b756495a9539fb83cd57103f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USJ3V1479217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaa9bbec1e51ab352e71f24157fb3824d4f35ec451fdf73780d2a004f7d1a28. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USJ3V1479255.