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 0x8ac55e3e1f42bdf7639d711b8f56a6cf4eccfbf5baade187ab33ce754a0f715c. 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/a8dc7909-75c8-464b-8983-f648fa24ff48.json and https://artists.proofprofile.net/proofs/artist/a8dc7909-75c8-464b-8983-f648fa24ff48.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 0x6be36a45b39beb47789080d170ce6739119f24a0d4639e22e9acc7a89df52d28. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/USTCF1027503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06523c6801d81e6eee07ec2fce647427d6d6b06cb70f4f998f306b926fd63128. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/USTCF1027564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf256f258148b56f20658d65226844001ae87956c879b9fb540cb420ea9e1a0a4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USTCF1027565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440942513247c7bff52ad18f2e72cf19a0722837a6c356abd04d59e43cd0276d. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USTCF1027566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa916a041d6d602ee2c4622a76978b02e5150fc61002f51e0e2fb9f39cb27789e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USTCF1027567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20fae26aee49201ced16debd880e3146de25caae378df719ecba5d25e152c2f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USTCF1027569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034ada26d884146c12a83d3019ddf44d8f6cbb01af7a2c5cb36c7c1962a44445. 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/USTCF1027570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5621fb6db63fc5b2929273785b34675081b6c601014b401ad86a13df6c2b723d. 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/USTCF1027572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51b3052692c8dd302636b920aab782d4065881b562890579309d58b57b49f45. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USTCF1027573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcfc3fcbe3e50f8a58e75cc15bd8d62c0706c31bffe0ae3bcb2fa2dfd60500c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USTCF1027576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769fff71489d35ea1d6caab1919554c3c00c9f07e978ed2a6599b698af0bc711. 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/USTCF1027577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1712c8e93d9c356aeae70b3142af710461870ef674ab5004a41542628edd2d. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USTCF1027578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12be8394910a6b4b3ec46d759e0cf3a5aa383a0d70e896d97f149cdb4a8a01e6. 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/USTCF1027579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dcd99919149dffd60dbb87778275c8317f81c51ae8e59eac75ddbfdaaa3072. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:18:34Z), 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/USTCF1027580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5b4ca4d4d0f67077372009b9341d7736a6213cdac9ad3926c6f978f2ee5d3e. 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/USTCF1027581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3a3f09e9cbed83f4f49bf117ce12423b29ca0e53864d686f0fe05c3fa8d703. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USTCF1027582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2ae6f35184a4533c47f0122dda497534406dcda3d32e4cd8e5a4428da061ef. 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/USTCF1027583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d3699eecff499c7eb322983596e412b88574d5180acd049b774c9a9f66feea. 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/USTCF1027584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85882f37bab8695ce147ef2ec7bd1dac1773541bbe5c4c2403009030087e9fbc. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/USTCF1028933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f34ecf1e748a3a1bb4526aa093022d5764f12612144af2d973818856f51e5c. 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/USTCF1028934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44cfa1ff5240d7af94e99b426698b3de8dc2077500726090e337db88c67655c. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USTCF1028936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110f651db39bdfd761067702159fdaae963405f89ac27ec32c6c148f4b0e86bd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:01:32Z), 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/USTCF1028938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa09f5f5a18878ec5d298f33faa1fc22c289a0171dc31cd8e3a72e2ff5737a05. 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/USTCF1028940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a59f94c051b6cfd458ed62e51416ad32ed39520855440fd5f48682bc48391c7. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:31:11Z), 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/USTCF1028941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe697e8de8453b1b858dc6af7223deb7d436625abb1a130d7dd09777b9eda437e. 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/USTCF1028942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9323a1e7293cffbd229474a1c7bd87b20b4284be85eebf73a814b07fcc2a3557. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USTCF1028944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21935e0bc94dd0a960357e6739e312f96828a6a4c6c14479280be4b6943008d7. 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/USTCF1028945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca10a4a756d2b3ff0c915544dc0cb4ae0d43947df8b9188af55607a2b94025e1. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USTCF1028946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fe8d9d8e75334e0997eae7c7f6b0f4120e1f3587da6ef4a450cf57985c15cf. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/USTCF1028948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9985b1da5a05e7bfc14cf76dbbdc5010c56863a44f0b4be793c7808675c1ac03. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:19Z), 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/USTCF1028949.