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 0x2303e9daa37b7a5feb5fdbe63e9c3c5dc41de642357164c3f86848bcf2114135. 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/a11ad044-27ba-4a2a-aeb5-992cddffca69.json and https://artists.proofprofile.net/proofs/artist/a11ad044-27ba-4a2a-aeb5-992cddffca69.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 0x3380fb614f46a2623443241210b72fccaabd99fcfa0d635b2ffb23022821c879. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/PTIP11000039.
Eu Sou do Benfica Desde Pequenino (Produto Oficial Sport Lisboa e Benfica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f6760f914855e1a9cbc0d2ad53a1a86671c92396bef70f9ef5452a27e7ff9a. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:06:38Z), 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/PTFA11301853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664012a280e845319eaee541253cd9549a81fb6a3193cf8b3d47dc0a824a7bb4. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/PTFA10800741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d886c7cd012d046bdf159d5255f1317128b74aed41ba227055c11c876cab35b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PTIP11000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aec219b92d460dcb2d96226b6cef2b396fedce28f9bba0ae6ad7e149b6638a5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMFMF1451750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0201b1419aaed9d694ba9584c0fa0e31f876a19edad2e64fc9610ea14163158a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/PTFA10800742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb61a79cff7c2d6095df486201cf46c1c758c94b52421ed31301b0694bf11a4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PTFA10800740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565065bad7622525c2dc8774d55e6d751a5214733550f8ada92d055cd2350e59. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PTFA10800747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431b3cc483503bfabb971e174db4ddeb867e99288aa4b324db3c10fa2775e333. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMFMF1451753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ca348a4209276f22d9f60cad22e5038bbc692c2c471c3bd017224ef849f7fc. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QMFMF1451754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318e2512ad25b6ee70288f7d85c5f14c3916385af50b8fb267129efee706666a. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/PTFA10800743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9ba1e8863f0ed1c959f8a0235e44d5faf5348447b61ea1509bccf3b808dfc0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PTES11509901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6853ecb0ae57129004b1ffe91ee83254fb217a716c9e99ad58dcf70197a024be. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:28:34Z), 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/PTES11509903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920bfb10dbcf94fbf2657017d2dde5b095d5e22fcb58749d6dac743bebfbf4f6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PTES11509907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9b67a549cf487eaee586fbd4b8fb82d4b8efcc80e5a9eb2520bbad73f570da. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PTES11509908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebc445d76383108afc4b0a2fd27f070224446c139c9143acc60206fd2c3cd97. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PTES11509911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcee29772be132d4ac3e7f202f25a297e2fdeb80497a07b586aa8e9cb645f66. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PT4HA1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcee29772be132d4ac3e7f202f25a297e2fdeb80497a07b586aa8e9cb645f66. 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/PT4HA1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4f54b3d586445762fdcef13b94e7485125d061e6bad007ae90de2febd70e48. 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/PT4HA1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb479427b777de882b8ef194e0cbaf521437d257e0d9afe088dc2c5e250fdf76. 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/PT4HA1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d635ff7367a1e6695469eda33e1b3ac69136acbc7865a3c10896bd660f6ad7. 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/PT4HA1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8313e27625fca5ce69fbfe98843271eb420d150750d05bf06fbd84df47a71cf1. 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/PT4HA1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b48e232877278464af527ddc6f559df128be07d59f01a0a16c66d55b562190. 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/PT4HA1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b85aeff2c8db61fd0ca0f7caa1e5d79b5667810759423962f04296f899eb1b6. 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/PT4HA1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5406bbeee5d1f6e54c994e94074afaa0305083df9ecba51fdb31ebbf19131bfb. 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/PT4HA1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcee29772be132d4ac3e7f202f25a297e2fdeb80497a07b586aa8e9cb645f66. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PT4HA1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da29ab7cd7aee7d5e510ece8d63531d85a3629068da2d8724da7daa0b5cfb4d. 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/PTVI11000363.