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 0xd903ba6a169a8f38fddf60da04aee2ff1c96374e103f478bca566bb980c44dae. 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/c8a758f5-dc4a-4322-b016-68d6ee02c866.json and https://artists.proofprofile.net/proofs/artist/c8a758f5-dc4a-4322-b016-68d6ee02c866.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 0x21dcfc010ea6b66ceaf0a1014cf26cc07f28b6f498fa77c1cc25dbbfea03f988. 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/NL4NL2003541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceb96c11c272a8ff64c1d286302f40ee6f3f6d09c94cb8afba67b68581ddcc3. 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/NL4NL2014655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e6948cdb203c55b5862d4f56cf6c6cf91257826618ecbdc9e7cca74128fa12. 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/NL4NL2104689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b076acf9a38c5791206302df0498cecee335ada74d8104cd541fd34f7941c9f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/NL4NL2132341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372cd1439fe3d643479b7837f4d3331f0a9281b1cde9bf61049428587eedb2a0. 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/NL4NL2144164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424f0dff0d44aff5009281c15ff9515eadff9d3b0efb2b044dd01812e477c820. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/NL4NL2148626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95c64ba073e825331ef91b175e50fcc8837577cd1fcca4c7779c51453f66add. 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/NL4NL2151837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6e1c5c6d96f8adf39bbd99454a8bff055d3a9a39b7522b58ea86ebfd246f6b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NL4NL2155432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bfcc226dba8e22a0803f2e563a915b58fde5237a6db99c6c58469fdd83a3e2. 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/NL4NL2163032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785a8740d7bc5b33ffe4918e6c21e70525f3dbc07bbc2e41240bba4c61d26806. 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/NL4NL2200287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d28dc0afe8773dd325cb905feef5a0938e232690e243bfe87815c34cc48ea54. 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/NL4NL2204599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ec59fdbe8b9749a27dcbcb4ab9fa7592c4a93de577847d1c88847055602a55. 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/NL4NL2211360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1adc3f39a9561bd516534af459f4c99d1079ccc24b66d50506541648e7cdc6. 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/SE6SA2202715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f948e50489ab23cd5ac6c13820f179613d6ba07c922298b5fa9dbf9d3ac9c3. 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/SE62M2213371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdefc473efbd89b1973fdd9ba4548e89a2b276e4799ad55d1b93d1ddccd9d3c. 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/SE62M2282214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2317d51641c843e4634f4a78b6bbaceed06852672475837323304c6082450808. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/SE66N2298532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c13516ef66d5b2a7e05c362963c5b9f00d1ee0ad9e4c43c49f16e0c19f3690. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/SE5BU2350869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4461b5b6852d0f2c20226aa61f34e5b2404ec64157fa5afc1bf7fb001275bd. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/SE5BU2350878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ce673ff327313041533a3af5a13fd722f49163a132aa86538245d8f2eea9b8. 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/SE6HN2352292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdc38e024f5cdc06d7a230dee85b01a3567f980805582b39fc72684fd5588cb. 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/SE6I32336044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e7a2952244f9ac12b2a782789e1b52498e2f11e0b615e7a6b39f910b52e0af. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/SE6TI2367679.
Royal Straight Flush (Sped Up Version) [Remix]
Royal Straight Flush (Sped Up Version) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7e648993cc8aef0d172a16d0726698bfecff5720e5373ac6be8b0f47f5ddef. 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/SE6SA2351644.
Tvåmannakalas (Slowed Dunkadunka Version) [Remix]
Tvåmannakalas (Slowed Dunkadunka Version) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94068a97d86c657732dbc3d28732a85e78b1e01e94c84ed4d69c0c66d4ffb74. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/SE6TI2352646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d50bedb5494492d9260ef6fdbdea2d5d7e644c8973b767d105095a9b44fd296. 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/SE6I32477272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaba3c634697964f3d632cab267009c0bd00131c8fca1cb165a1deef157d7bf. 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/SE6I32489098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154175b81b7e3b3220f9ed0549e84937966fa5b39f39cbaafbcc88058ae89f7c. 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/SE5752452823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c83b2d5a6a5823b5c8b289e9a272039491d1a8bf7a193ce18ed750248a432ee. 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/SE6QE2496600.