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 0x8c2d882b6b4eee0c4c940eadc8969ffe00565cfe8c0b5977f4541f98861a0202. 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/82376848-32b1-4461-a40e-92b5f91fd493.json and https://artists.proofprofile.net/proofs/artist/82376848-32b1-4461-a40e-92b5f91fd493.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 0x45d639e313ea00321bb7105bf954da9b956db2f906ff9954755874102e5b5d9d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QMDA62488479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a4257563425d4d691d17272c3376e552d1e4091db3b862e3b5fc1c71b1a752. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QMDA62488480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54872572e20af528b10be44eac598a366f4f388a3583121766b8cf383664501c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QMDA62488483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeff96b6633187b87d3ad4fb04f0e812fb0c8c9bb29ec268f1b998f1e9801e0c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QMDA62488487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b5044ba1fcb2a0f6ab2f0bee28a2b625b9e62bf250c75b7cc8e73a3b7617b2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QMDA62488489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbee0c9ad6ad843560aeb1a159c9c70b4c35e97d8d99fc1d3df6fdacce8ef06. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMDA62488493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063e42bd2f6fac265758f13af8e97b9f6df42a24bc04c58528f25da477c6a8f0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMDA62488494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a849daa76757fb1ad99ee702cc8f39fd977a9c93a44b7ee40d46cb98e5e900. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMDA62488495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e65202ab7328125611a648c17a23ed613fc9d0eb2bf7f4bed130b74246b1837. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMDA62488496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da48989e587d4a4b057459d2bfa248efd48677d97c696352785fda9111988d0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMFMF2448452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4c2205e900143a84952604e3fffe115e23d139596edf9bd9c1fb629aa7e106. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMFMF2448453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aa54d870f5e1e65015125d3f5d27766bd6d7f47b8ad40ac899fb0bc4970226. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMFMF2448454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036e1f0bda5d35e3d1116c1f15d0412ad18a7c217193d69874efa4460068cfc3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMFMF2448455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e360885dba02ba912dd4f2c56d2e7511847e342fc68eb5f2e6a1110f2e6679c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMFMF2448456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23779582731186b068344a695d531e7b55a420442ed205f13aa9f85bf60bb8c2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QMFMF2448457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0703bcfd846c9ed4f0854de1708452795a127184e08df3a8ebebc86c24c18f7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QMFMF2448458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b679641906c1f138b4ebb781ef0500b12e1fe878435219a767bf136d7aa57d4. 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/QMFMF2448459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d64cc02349395b88f0993d7c6f05cdcabed45b3102b43bd8bc143e63f2097d4. 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/QMFMF2448460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b570d165f5b090c34e347300773c72086eb7652d456cb600e25333eb27c660. 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/QMFMF2448461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09eb2b978b9948888579c4355cb71c5315220710dbf74164a683ed14a548a686. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMFMF2448462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703a29eadc0c7e1c1bc2e9fbb7965821509981356f4f93ed495af7f29b6fc223. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMFMF2448463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3d4abb685ab9f3d789828d6f60ea103f9a7b3cc9e3794aa8766905c7389fdf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMFMF2448464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64aee70ff5a57c4139fa42c93b70fb5b163ca36899216d11606b13f520ab8efd. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMFMF2448383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cf813285abfbd484adeee8e7953d574d989f4d912cc4d67ebfc7b54725bc63. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:05:18Z), 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/QMFMF2448385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52486165f2e83dd1b92aeb7a00efc2a111de1fb8df23aed1d98bcdc2979aa51f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMFMF2448387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6d462d8742922f7c8102f7b514e915545c82c8b9c4c3980d9b8cecff468acb. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMFMF2448388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4f4530b4e6c7c499722f20247bdac786f0464423189c51bae4dd02143e0679. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMFMF2448390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f21d8314afab26d1e984f1d76b0c2b87d9f4aba0fc14b0a14af0ce6b69c6d0. 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/QMFMF2448391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaea832b2bd8fd9c6f0d4a6c953a1647a1bc690fbfea1609c3f839ed2d27844e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QMFMF2448392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d2015e7409204e65c1e0f9c0a585e04078772a21793ded91c33da2a2eb033f. 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/QMFMF2448393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03a1203ccf667ae696493b8a1acd18ff21d18c784b6864ffe2e64d9ed4a2c14. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFMF2448394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6148d91531a24d4ead9f2f5da797b7fedb839dafb6d9051d482b3102923143e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QMFMF2448395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98052d058acb6d6efce76fac9cfeb9affb1da2c3a1cc6ad61995be23cfda745a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:39:42Z), 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/QMFMF2448396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ac3a13ae0323b8f23b52938bf5d88dd910011a372493f6fedcc8faa2c113c1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMFMF2448397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217ef3c3842f958ededeb497849ac979107adab3b20537cd1885a75acf30234b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:37:39Z), 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/QMFMF2448398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f418954e83229fedb888a530f5960bb8b16c7d4b930f76995f32b6e5d0c2b59. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QMFMF2448399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160aed43d164e83853298391a769e96b7d638582f6efcb9908fd08b77186388a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:36:55Z), 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/QMFMF2448400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711d3448e3d9452d8acf4322d72e0ce6a8c9b779fc8b3f9796b72d2f237a441b. 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/QMFMF2448401.