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 0x598bd2a03c3a3a047607d9d0a8c0a696077f2ca3b91e41514cc4bbba6e775730. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/287c7d47-3bce-4b6e-8a38-206865f4d519.json and https://artists.proofprofile.net/proofs/artist/287c7d47-3bce-4b6e-8a38-206865f4d519.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 0xd3a2ebf65de3ddddc41babb5edc57645be76917eb29a91e74c4277e9e50d1500. 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/FRPI62300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11fdbe4ebd221e17980f0461abfb83b6fa5627d51ecd47f57e300410b7ec5ce. 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/FRPI62300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6437a6048204e05ba81581854b3b30d32e5d52c6d7317778dd39981ab6dc519. 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/FRPI62300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d1a17c1e6ccad40db5356039c35bd738c4b7f078df194984c5e3abd0596a2d. 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/FRPI62300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1931bfaf6be683f6661d06d9328a44f0f2b49b61fbf2f331bf86a73c5de3c153. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTB42260229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf628a8ec3b79c09c95004b7ba1a9d02e9ccaaa6d58ce050d097489f3d52f94c4. 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/QZTB42260230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497db65fc2677fc1c0e34f380c4473c8cc66028856d6e81aadce833c37626722. 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/QZTB42260231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985d2fbad2cefa120432ca51ec88d5a08e093a2bf3af31c7ff2122a7acc3aa75. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTB42260232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c2ac053a549ee5d86787c3a39c7ccfd9b9946f41222b169f4ee2eb7a060e99. 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/QZTB42260233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac98140fac54dec0f2977b41087562c249e9cd4617c86b9868c7f5215fbb0e7. 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/QZTB42260234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945cafd16fdfa2b2f9c27e5d8a09ae2ee531edb68a01ebd2dc5a1d6adf4abbf9. 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/QZTB42260235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9840f5c37215b2b4e3545b907a2b3682240973e950616e84c508d42d2189d23d. 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/QZTB42260236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdacd66091deb8101093dc0f18ce65f893eaac72846743a1c43782c28c62ae2f. 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/QZTB42260237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998321f5b9de59e3075379edd96c7f4ee742321ca2573cb5a8c8edf71ec7f932. 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/QZTB42260238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cafaf16d972ab1d7a1b14a1c437c9527f6d4fc343ee9c5b017c76c4e61645a9. 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/QZTB42260239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf513bf99bdeea48e2ee2f5ded621c3b18819c2c971d06ee7c0cdcd8c35c9ed0a. 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/QZHN62266047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2489729db0ae9c764f41be9508da34cc98b0cd3227ffa22acbdd576bfab36b. 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/QZHN62266048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09889c992632aba7a73d0ae61c214dcc8f153ce9e056fe448c2bb71effd56ec0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN62266050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a44e3509377ee93bfb04739cfb08e04d033ac862733c7b5231a8c7e6a30c978. 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/QZHN62266051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505c6003d3809eaec9fadcfa1c7da5961facfe918a48dec276fef6e061fac525. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN62266052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38985692522b37a2fab63a3c9d0b98b6315eb8470e9c23535ebc203c43d18634. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN62266053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c50d3215014eb8454d9fb38e3be67764671beed56532c3715a69b2a6e06b061. 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/QZHN62266056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd54b2c0b7e9f7b35ee98d73122839727940114187a8c186229fa4fbb328780e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN62266057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f43d3b2f5e81db131d6d228dbc33a72aa214745a17f3b66ce6057ccc34d901. 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/QZHN62266058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c432690d0c00d281cffef531cffece0709b962b880948bc5038a048af3b692b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN62266059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a0168fd65fdebf69e475b28b679e36c74751c2ef52218639089c8f207d87cb. 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/QZNWR2152831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8069c104493bb5721d92aa86aad8e36b802e369a8e73c99b4bbf6ab9944610b2. 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/QZHN52453880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d1a17c1e6ccad40db5356039c35bd738c4b7f078df194984c5e3abd0596a2d. 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/FRPI62300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6437a6048204e05ba81581854b3b30d32e5d52c6d7317778dd39981ab6dc519. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRPI62300130.