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 0x5bc7894f13c4cc99fd5c928b86252dd020406b44637af5c89eca06c39dce0409. 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/dcf94ade-603f-46b4-b702-f21f523b5d07.json and https://artists.proofprofile.net/proofs/artist/dcf94ade-603f-46b4-b702-f21f523b5d07.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 0xe8d5cdc0fccb3d84febd53eb5785c79442da330610a3807290a61eb8b48997b5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:34:02Z), 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/BAA052024230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ecf98f091eca9f91942d346a73d01fc05589628b4743327573ca14834b63cd. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/BAA052024232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0788b34a4049ff5d54af15dce3ae75c6bab50963a2d4f360d9c360cc32e8f2b3. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:55:37Z), 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/BAA052024239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57023137ba4396cae300c4311688c5c2368ec6f9948ce3a93f15d03d7ebb886. 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/RSA221810874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37ed495495542387b73d41be8a149c18d32e451041a04ad7a89390881084a70. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:53:13Z), 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/RSA221810875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f28e439852bc0b5f25dd1eae25f3ef9c93e9f81f57c08b08a7bf592dcd18849. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/RSA221810876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515894575a27dc076a50cb7c2781ae686118096e6dc47dbe425faebd3f134fac. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/RSA221811442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eea2b74663c9a2265de748b70557c2a57b914f5ee5002b26723eee022fc18e0. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:05:20Z), 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/RSA221811443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637af988897e775fc7ad42577d63d00c23f845406e092f36302088fa2c29f76c. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/RSA221811446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294885419ca234314ad44725e20a25ceb5f68e0a3605ff167877aca9ea24b304. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/RSA221812065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa511b3dcb77683b902609dc8d2445bf3085cedcdad82d748683fe5a1971fdf89. 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/RSA221812059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776a58cc4f29b09aafd2fcba5cfd9a897b623e3f5223073564f8ac35c827702a. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:04:02Z), 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/RSA221812061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9802a96252bcc9801d3d442d779665ba660d02cb6e6e3ddf9c28bf7160426ca8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RSA221812062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa58f682a7dafdd9ba09323db522e2e6a98ea519ddc0ba09e05905e97d1c179d. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/RSA221812746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0df8acc6c72bc787607e0d75546cf7e6350f269a7d19f3c1f24eff66fced43f. 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/RSA221812747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3082433547df2d420edaded1f1da4c0f4017592c8721eb024920bec986cd2bd0. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:02:11Z), 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/RSA221812750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56dbe47472404bf09c37cf7b852cba9d6717ffa13e276c61950c731029d6f70. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T22:05:46Z), 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/RSA221812752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee222388cf50d934a498b65d5fa4a50996d7c5975d2e8b1298ac7f6865b8bea. 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/RSA221813438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18086149f118cfd11e230689d428f2b6b0daf7dc12e1e42d6b2f670c342f7211. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:08:16Z), 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/RSA221813439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadba6bcc819168e84a839fea5b4fb0c1bdc07c75d72a1bdf82372267a667e4ac. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:20:41Z), 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/RSA221813443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990cc4e8c87851fe54a0ba6bb47ffcc30bc77d459339c5985d1569d221b29787. 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/RSA221813444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d7991906a423bc41d1a592aea284c505427e87b0d75465c7cf9917f8c2b777. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/RSA221813887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd74412f7e4beb5e3fae87844d30abc6ea78054c1bbc9ce4f2cbf604a377e00. 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/RSA221701149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caf59074ce235a990bd62095881267e48189032248096aae20f5b0ee0b1fa11. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:55:17Z), 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/RSA221701269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c2fc5fa7c8d0d75f3602bfa0c5134cf69fe618b0127172b701dde62854511f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:41:31Z), 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/RSA221900924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199ebf2a5ec724338ed5e3e09591fc78e254b8bdd1e0e78d82724c50b2ce757d. 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/RSA222090991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70b53d2192dafee5b5c3ad287cab9f2a2a42d4e2df89a920df64a8ddd4ac626. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/CH7812356009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d0279560c1eaecc17e66d8e603dede9722e0abff2f21b23dc9d012fd0bf686. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:25:39Z), 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/DEKB72430686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd800c6f04fbec1fdbd5d437795d9f0bfc75a9e75fe212c93f08f268dd99c31a5. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DEKB72448572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a4aed86f33e480c7f43a2ecb4ca5abb456174a07c8571c0e855b97d552c22f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:42:37Z), 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/DEKB72539672.