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 0x1d665161da4e72a6c6d14bfe2c59f505bd8c7085423af651d441578062846a15. 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/b108c19b-53c5-4b93-bf3c-f740ee6cd775.json and https://artists.proofprofile.net/proofs/artist/b108c19b-53c5-4b93-bf3c-f740ee6cd775.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 0x6c47c10bafa6e3c365007eb5ea3eeb80a9fdf67dfbe79a96c3f9efab005ff5a4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LVA101100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec135c678fe80eec892ab6962205a2233b80ce6b6711f418f670565a76e9c651. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LVA101100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce11136ba8f45efa5c8d7f5cf4d76b3f485ec3c339d21e5f0a8fda3227fb2653. 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/LVA101100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d9606b0480da65182a60ca8ef56d645488a2c9963db26538c296f45b4d4e3e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/LVA101100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098b0a06e0003bbdcd97a41876c43d1ef3f0b8396beb097219cecb3344e25f5a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/LVA101100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb29508de6e68c4e6098b75c6005e872163388cb3c805c754db539a4862d122. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/LVA101100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55207ac88a52fd39193400ed80ac150325cbe49425b32492425f6c1a7cab2e06. 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/LVA101100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3bb91bc1c0ca77b1518abf86623e9071a014f41d6959a37dffd2b4a361e1ca. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LVA101100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4917eedc91d7b647e0c115ff65f041d51c6cda1ce81d5b8bc98117b2c7b4e57f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/LVA101100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c1869bfbd05f8c70b541a3dc4cb7f385a08a76765f431e126a54632179bb6c. 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/LVA101100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14108f434b1e38fceed84669bd2dcc22b3d6fa9dadd9900d44fc2e0cd248ef0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TW1544881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe938f49b7bb12cc1d40a201683040132f5e4b5a3042133ce886d57fefb5278f. 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/LVA101100145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc61e59f2d17700827f0d561e1d5e035bfd239e961b5ac62fd5ff1632a1ec064. 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/LVA100200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021764fe2910cd06c6bef73acfadc249268986498ef9fbb94a3771679457a74e. 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/LVA109600348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dbaf96e12e5d6f72481cbb586309fce843e65afd8331b41852644f436412ce. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/LVA100200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d83b617d8050be2cb910ebca1b49eb382211710922e2652294e2efe71e52cc1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LVA100200137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba045b4f14fa205c06ea7ed022de4fb85a07ef21d91c9c5243e77f506be609ce. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/LVA101100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd938ba8d5ba92037b2269ac7e37a1e7f66fd857aa6b662ef2851a420cb01cfe5. 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/LVA100200321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9126b8c9b05586d3ffdd8bfcc8ae3bfdc28d0d41b8f5fda335884cddf0aabe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/LVA101100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b52edb9d3731a27f91450edcd69cc2c441f5c7c296377dd917dd162d6a008c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/LVA101100139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7a26b8c42bd7683733e17561df4ae2bcbd369de20c9f2f50d3822aa5ebfc42. 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/LVA101100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5d18b98e51e33aa6f7218711943e9c215d5c1e07353ff0565fb1e78e5c9f5a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/LVA101100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd337f1ff180e3421c7677265e97c9f36a330553ef01897e5f8b52eb300913e05. 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/LVA100900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06226bb71ddbb7b82f8e400aa0cf86f7f37d576e6dce99dee10b79ea88831a2d. 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/LVA101100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97049a2f29dab4375fe020180e72dd29aa024931931253a04678a66383082364. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/LVL151700509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3ae22691125670dda1aeb4eba7f12281c3e9300fdb3d67229f5c98366da423. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/LVL151700506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591671983c23141680f79610f3bf6a58e7e596451ba96d6cab0236c16ff57528. 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/LVL151700503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4f36dd5fba270d2284267ed488e041c0e4b8eb0f1a3e1cbbcb5d83b72147c5. 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/LVL151700510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf76c1955ea878ee5fde999b7a97a6310f406e3d2134319e8a57867a3844b61d. 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/LVL151700562.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021764fe2910cd06c6bef73acfadc249268986498ef9fbb94a3771679457a74e. 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/LVA109600348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706affa5edf2a3b3cc311645685831107c27f0c60a555ea7fe1ab4a45bcd5d5a. 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/QM4TW1596448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc61e59f2d17700827f0d561e1d5e035bfd239e961b5ac62fd5ff1632a1ec064. 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/LVA100200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dbaf96e12e5d6f72481cbb586309fce843e65afd8331b41852644f436412ce. 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/LVA100200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ca22ae53daf5344565827bd45abcb0bb2646180ddcad553640a3dafc99a9ca. 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/LVA101300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea301bc8e5dd278b3d0a9159ac9f4500f5d0b5bb21e0e583f91fd410ea013c2. 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/LVA101300729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938b1d3bb0a4aba798f86893ae707be9937cac958637d09e1e9414ddc6a553f8. 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/QM4TW1596449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b52edb9d3731a27f91450edcd69cc2c441f5c7c296377dd917dd162d6a008c. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/LVA101100139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e8a77a2d71e3cf36448fab45debfce737c71b2153af75d6fc5b0cd402a034b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/LVA101300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa69571cfc05fae33c6174cdf4b7fe0fe6af8ac8392b4c578ca43c3d2b4a1c88. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM4TW1596455.