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 0x312bdc2137a612e0f466020c94e401bb32052041a9bf7e0eba83a666b73c4397. 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/70c00755-df98-4fc9-8cd8-f25169f0100a.json and https://artists.proofprofile.net/proofs/artist/70c00755-df98-4fc9-8cd8-f25169f0100a.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 0x83607cf2e8ff716bbcd28e44f509c1d5df056975a74e515c28747c4915383796. 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/PL2DY2200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1126b99e158a6b75b73da6d55deb28477b9654b175b5f42ab5648c28918a1f8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e9ed021f32f9a0ee37b34db2f0804b8fde037f5b1c10936224d18af7f6fff7. 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/PL2DY2200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9170732b27bb288b6b43cf660c7bc818675373c6fdf2eeb34e22acd0a97a750. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acc554531ff27b5f9ae1672daa6e8701dc4a8a0453963dc02b7200d9969ea42. 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/PL2DY2200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666f449424c602ddd7d8187b2b0a4f54ff07f4b6ff8292927a1b8658a99fca36. 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/PL2DY2200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81f66715fd65a20a1dbb4ba193619108e34e9fae89babc77cc616cbfcec8711. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1400b12cc5037439edff04640331416829c96514ce2db4b7b18bb4f9fa04595f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c49ef557e5247ff0ea855e55c3c23df46604b2f1667c5412724ef54b9bb57e. 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/PL2DY2200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fe4272433458a50c831fbca423d4a8b21a80f998ef0b35d6615dbb89204af1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb91d032a16c87d129f423d0d0a14153ab936e6f067fca2c1d006a66e7a84d93. 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/PL2DY2200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7a82878fd1a20b989f990450ed9c9663e9e65c1196b2b1471e71163ecbd631. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7560f90916b9a6f1f68fff83c4ebbeb76696565d070cf00ae70e06c99b2766ae. 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/PL2DY2200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66ab0b4051e6121b60eea3c4a201c7db7047e1c5ad8d6550ab115c58ad2b9c2. 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/PL2DY2200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f5172b6e5f427bda8e32ed6b8776e507d412ad8d7e42ea2193f27c5e6644ea. 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/PL2DY2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba17a894795af6cd2a113a18c279a5d07183359989a4d0462c9705a3a01c4e4e. 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/PL2DY2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0812ad136a0867372301b1897db4d9d77a59f0977bc24956484880608c753086. 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/PL2DY2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf082650755f38420bd360cdcf3ba8c9dc6c5718d6e4ed8cef448063a54afce6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb67c2d40d1c63d145861ceb2b9cab98a991cc92b1c6144e50236ccb289f04d9. 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/PL2DY2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe485b7b3b7194a5d8fc18b059c2c0b35a2a986423bd217c3fc5c09dc04e413ab. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd840b35768a7cf6434d297ac2fa5cd1d17692bbd57ae71bdf48daa5c0c64e435. 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/PL2DY2200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb35f4126c220243de3f5a07e26be02c069a104f105fef40e9d7143ae34e2f2. 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/PL2DY2200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58e4e200b35211a90a6f07a1f5884ca5d90868f0055b742607df5a14a61f44f. 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/PL2DY2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16bf208c081c497e8fbb8163743c0a1f2fb959db9d88f14befbf4b9365cdc8b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3215db838e00a45f581419e733b418bab652666fc2e1a16235ba6ca4500f0cec. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PL2DY2200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7a82878fd1a20b989f990450ed9c9663e9e65c1196b2b1471e71163ecbd631. 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/PL2DY2200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e6c405376717e0fc44b9a03b3a4430cfe931e193035467010c4f6b694b871e. 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/PLF242210649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3099c4aaf629d2751396ec28da5d154e149f17ddc8e19a508262a3f1a3cc38. 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/PLF242413939.