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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28f35b5df10391e1c17f735d5ac8782a610828702441067a59e6e479da635f8. 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/93431ff5-8d87-4890-8afb-5fbb329631a1.json and https://artists.proofprofile.net/proofs/artist/93431ff5-8d87-4890-8afb-5fbb329631a1.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b44f8b78bb157ad9b6175886d6c4cab8ad0a583b5cf1148dfb9ff0d1c6557ee. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QZZ8B2325445.
Synthwave Revival: High-Voltage Escapades
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b827aa5539674c94d633d0b56e86a591da8cf547419926acc9b8f7fd319f10c. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/UKR4Q2031465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de8dafafe6be11f8c2c1464f2491f41072ac91279ec40e86455540d55f954b6. 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/UKR4Q2031471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2146edb754e991ad43b8bf879f79ef1527f950c74bdfe23c9b2af0253c532d. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/UKR4Q2029197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6512dc22a7d52487b7caf5fd32e0b0377f719631960c0238f3a4859c40031f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/UKR4Q2029200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65150173e9ab0298f4290ac4b31b608d747e706a908b6b802db4abe976059ef6. 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/UKR4Q2029202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584cf3007225881ba09e05c766c0ea32c4ee465aa319bf950a9f6c5496ee0298. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/UKR4Q2029204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb1e0d1b706bfc342e45051baabdebcbca489430aa9a7056aac89a8e5381d32. 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/UKR4Q2029205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad8fcfa8c8c5f54fafaf1b65e10dd47ad076a6bca0d505579bcf6587750d3a0. 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/QZTV32479771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1548d825c935aa555fabc2dc5df6a88075931030717f75117450aedf22ff49. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZTV32479773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796a4e45f101034db2b89dfc23def1d9b900ee1f81655780e78e96f3278942cf. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTV32479777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8825f4a415a4dabe4cca2f3a21b5a80d9db829b4ff47f294e34c2bb006fa37. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QZTV32479783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceb318404076770d005cf11135880d59c45b85e9970b629de23b814eb386eda. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZTV32479789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc6baad27cf194b131a809918adb4b86ef971a287eb3437670fff8aeb958d5c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTV32479791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d1ad8daf07c2b5ccf7ec9d464d110a5eb3b4284b8d9524cb4a3861da39e0b4. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/PLL431947892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5159cd315d854dfb6b99e8fc4b6037a5c1820677c65ffceeee590e8a66381644. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/PLL431947894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc1bfcf671e18c17ec96d033ddcecd76b612cc42dce464142437430e64fa054. 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/PLL431947896.