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 0x816df74e6ca87866e6de0e20d723c7d88b1c6f02fbdae7eb33f3079ae897de8e. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97573f9f-4657-48d3-bffd-243b8c2b4d83.json and https://artists.proofprofile.net/proofs/artist/97573f9f-4657-48d3-bffd-243b8c2b4d83.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 0xb469778e2e6a1bb70a03614b2f47fd2f96e7547dea543ccf6038028a3be17e35. 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/CA5KR2082956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19d476a06e7df42ceca589bc4e16d6291c9ce89c378f28231391c2c81b44adf. 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/CA5KR2082957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf101e2516236546ba9df0ca3c50e758bb3bcc5602c9355f8e49b597fff49408b. 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/CA5KR2082958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa560fa87f4c21188fd9d14e1415af2a60613d74b8ac4f41d838d2a39e09da9fb. 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/CA5KR2082963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28639e001f347dd7db250b1a3388d65ed74446dabbc56a4c9477275c0e895ecd. 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/CA5KR2082966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba21abda4acfc95bd032deff7c8e3c86ace98d58d50b2fcbd58bda6d96e61d2. 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/CA5KR2298022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6514da7c8d41162092042f2a7778c70f834d57feb07387355e93d5c4784bf1db. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/CA5KR2298023.
Above Thee Below Thee - War on Heaven Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9378485118926a9e52f0e1bbbd8152843aba70c376ece83a7b76d00047d6b6ea. 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/CA5KR2298024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ff77dfaed6d579c88bdc024f04705635e29d348e41c0be5cd5acd676de7705. 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/CA5KR2298025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3309871d43ef14b3dae31793ea14195e34169007bd5fe0e12ff57f3a1ed1a037. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA5KR2298026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fec996babf32f15844cd89dc6a5ad73ed0df8d233a72245f72da44479dfc6b7. 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/CA5KR2298029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a5c811049eb71b7d3dfcf8e170f05192c58931513acc5fb3524dc373d33b33. 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/UKU932380684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf23dc689b2d45eb4764e77a9c1f5ba7d3f6bfade305b30c4d7f438af4ea3a12. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/UKU932380687.
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 0xbeca0a28af5727d6e337de40a07cdcc75475a623f7d5ed3636d15cfbb06e0169. 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/DEH742317422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5900ade8499e92d600b21e963056e3acd794a0e4327bb93b44e62cf094a1cd2. 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/DEH742317423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efe159e1d65614cb49ed01c0d83daae628ff2aef511c20919e95cb54e201cf6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEH742317420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8fc7a073cf65d1bf9c5d71dbb0ed6733a976098df108506176759a544b47e0. 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/QZS632327067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e0d064e2eef61f923e1c6ce20a34cb5f112160cc6d5a93ee986c618b5c74b0. 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/QZWDD2376083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3de504ead5390c476653cd37fa530cde787c83409cb7e73c2cef9c6aae5196. 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/CA5KR2080589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f52a5c245d4143ed986538720c70a5add42f3b17740f82f01eb14420b1f87d. 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/QM4TW2147489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93257246af901236ba2bafa1d7d412c6040267adb03e2c5cebd2bab6b9b44f0. 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/DEH742043928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e10c114d4ad90763cc96f6fabd662589115bae759cb2153af470541f3912e9. 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/DEH742043929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3cfe504666c9819add9e704923d7f3dbbea37ff9c4f8a67a057b339010d8e2. 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/DEH742043930.