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 0xe1828f607a172ae9172647c0648d79dab7c46378662a33b1b53dc714a835cfc7. 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/de89f550-b1e9-4925-9822-d76ac61a59eb.json and https://artists.proofprofile.net/proofs/artist/de89f550-b1e9-4925-9822-d76ac61a59eb.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 0x10517f09addcebb88255a86bb2d748a1fca789d6db69536099db60ae5dbb0aed. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/TCACF1527500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcba7c111c332d64ab50ed2591add76432a2fbceb81dcab73afbf3da326dfc3. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:53Z), 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/TCACF1527501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21e5ad672fee22d951b6358802b5d2dd45588b90b3ad5fc87dbc6b6278dbf8c. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCACF1527502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4349dd54e48627868cb64dd47088ef6943dff89c4c8f73b54253972f0ebf50. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCACF1527504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1c22efe4e20cbfc8864490b816903e5743d1b4d862d650b0cae38c92551521. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:26:45Z), 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/TCACF1527512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9428b9577732f6a2f2f1e2ceb292d0438e7ff34843604b0ec06544e7270bb6a7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SEXEN1700701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2541c7a0f98b34b7963620d4e9fcea556a37259c1107e7e1a48af15d393837. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:36:15Z), 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/SEXEN1700702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6cccb9338a52facb04bceebd1caf09ae66ab110a9c43e46eb5f28b6b79a45c. 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/SEXEN1700703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4801cc2a65b2dfde10d59b78d504b660facafb589509eefec3e703a22feedfd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SEXEN1700706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788b5031203cbb487c5a9e406bdafd1602d9c1a4bf56b5ea7d861c73a0f6d134. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SEXEN2201901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be4e295fea8aef47aa994bd90f634ef59c373f7bbbc1b0e1c4e32234a8134d0. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:33:05Z), 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/SEXEN2400901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52fcb6c75e11e586864eeb0c0f908061a42596de512333188a50ecbe45aac1b. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/SEXEN2400906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be4e295fea8aef47aa994bd90f634ef59c373f7bbbc1b0e1c4e32234a8134d0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:55:50Z), 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/SEXEN2400901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0aa2f7491c95de019b3f1f9f92f38e313bd526eed32d9e8ede6932bc3364a8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:45Z), 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/SEXEN2400903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2623c2dbea5bee69b8ce569436da37f8dee767858625e8d0b49d5866efa9b181. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SEXEN2400904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9c1fee5935eaeffb29184e0f6380a26cce552256e7e45b3ce3d492d31134f5. 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/SEXEN2400905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52fcb6c75e11e586864eeb0c0f908061a42596de512333188a50ecbe45aac1b. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/SEXEN2400906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25672204e21630203e921602f520e26d3a02a063a3d7e7ffdaf2c63de538bb5c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SEXEN2400907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29658c06a942290dc6f3b65f44053d1c23ac441c3b3234c38484735a16b096f2. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:56:33Z), 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/SEXEN2400908.