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 0x37bcc588368fce06dcb4b90c2c347f146aa9c663c5f573e0f81da7acb58e1e86. 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/e65e258b-e45f-43c6-aba2-2b72df266aca.json and https://artists.proofprofile.net/proofs/artist/e65e258b-e45f-43c6-aba2-2b72df266aca.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 0x6b4f1c883629511d147b92116ebff00d74c48b3b56690f8c57d25eb3001d2b7b. 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/QZQMB2106678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16d10848d39c06db87dbf85d9b4582c285b3d71d5258bc6feb41878277ca147. 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/QZQMB2106687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c777e610a981d7c781de9af28dc3dd7cb2cf3374cae141dfc8084ae03b8d644. 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/QZQMB2106679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64af5936ed6264d463bfc4725d7e0b2186933510ea037f1db37cbea196218d9a. 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/QZQMB2106681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628f3cdcf1dbbec04570c648922386376e30998222974370d2fd7ed059266330. 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/QZQMB2106682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97664320f26345563cced3d021b629a47acaba6dddb205a1d1da7d492db37f5. 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/QZQMB2106683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6440c4c693290374e76471df7be9b5cc2504205833dbd77b96196663bc1dfa. 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/QZQMB2106686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16d10848d39c06db87dbf85d9b4582c285b3d71d5258bc6feb41878277ca147. 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/QZQMB2106687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecd75dc15f47445e74bde9aa5b8105d9c11afa50d9eeb1e25b50a13af9085ff. 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/QZQMB2107048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea5a37bcc835650c54fc0d871caad837ed11bf29605b4ea2929a3739e427c15. 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/QZQMB2107049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b9ed9f34dd6fb4fd93fac56437ae8294755ebac897e01ce82ddfe1489ed2a1. 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/QZQMB2107050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d3ec738ec15f9a6adc3b4cb8551214cfb233faa36c4389e1aa1955761ccd1c. 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/QZQMB2107051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366d6d598a7f575aa8e81325941048a4085d5aad57adcd11540b3eabc28b3f5c. 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/QZQMB2107052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47cbd6e448dc999b584ff37d000796d56156820dd742e7a83c0b1c98fc0fb84. 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/QZQMB2107054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1139c5456ecfb93ccb18f9c14545522526a64bfaafa86995129e44a9341e2d4b. 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/QZQMB2107055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fb556ba1a8c727accc0da9dfee19932d1e1e446d74d197411eed33a4ec3446. 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/QZQMB2107057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9892ea243006d9d09d41bf6e6eb710175536412923dcfd84c895964de95d475. 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/QZQMB2107058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806345b5dfc140f0a4d8f6be4b21270b40c1a44238a8e0bb3e106baff8e7c2f7. 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/QZQMB2107059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae31681ea794ecd949ac26fe77913bc0b3a6dfaa0f82c5a41491eeae12ff575. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZQMB2107060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc5842f4bf1ae426f034ad9a91462d7866ad8be430fb42510adc9a62b189fd9. 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/QZQMB2107061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6f85805d769d7db8615e7d0ebe481af63a6dc5c4974b7f08b9034788200be0. 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/QZQMB2107062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345a6684430a35ba15539d21d3eeb712a912a177a6cd1d0dd8b07ff8bd7f0607. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZDQH2430075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75554e87ca33c75a558c418d2ca99a4a35f6ba8e288d2142a14e3ce5cc3289e. 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/QZDQH2426975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb662e9f5690e5437b3aa995edd9ef99f69d40001b4f24a4794ee3d558136d6. 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/QZQMB2107645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265e78a210a513a0232e5fd78083fc7fe3b71cad64c4a649f344c85fcbb37f5f. 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/QZQMB2107426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fe52330ce37d129b757aa5a4a44e15ab9bb3b5c29dda50626f87fa09ea89f7. 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/QZQMB2106697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07a12b74a1f8f1adfe85bc8c4d5414ca3bfa83c7f634e88c19ff71bf8a26437. 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/QZQMB2105692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751fada518c04752707f66f2fb774786c8d9472235402b70bffdaf0949e49c13. 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/QZQMB2104792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bacf450b47ecadd2bf8ff7620cdd2f6a1825d3156cea0dcc3d5fb41d1f1ccae. 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/QZMER2282216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd435c2f79644a56a7b7858f1d344b7b662bb3937ea3e6501e3f406d8357386d3. 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/QZTBB2266484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bd14eb95c50de590e9fc66df6e60084cc034824213b5dab1312ca7d62d83f8. 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/QZES72125871.