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 0xf745b5255963c6e8ffa057f5cd9f7389ad54035bb0fb8fad3308c3f39f35b4d7. 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/c7d6a425-2646-4391-a0f2-4f75a7896ed4.json and https://artists.proofprofile.net/proofs/artist/c7d6a425-2646-4391-a0f2-4f75a7896ed4.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 0x09840bded51a4cd4a9ab06e81aff53499542d5a0a7c8986676167490d9e85f16. 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/TCAEM1953111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b2d02bb155409a9f3abdf4b772303204c98abb661fc23054a4c466c98ad31d. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/TCAEM1993940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b7ef86a6bae30e0ee6eb68cdbfe5b031fb2bdcf225288d5db55dbdce24c9b0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USLD91724118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f17652284059eff1476b70a1dd0b011cb6bf471cb111a80de31f8a20dc97dd. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USLD91724120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a04704f7efe74c03a9998965d2bb649e0bc8b04eaa847a78c0169de1579877. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QM24S2005641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6eafe0d761a255defb428c5d70be3217cfbbab4517968327f657fe4ab4bab32. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QM24S2005643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c89ff977e3e8d6ca7a457ae8f837150b9350fa98f677dda74a5f02b3ccc4058. 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/TCAFA2065139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd21ac8d97a719a8909581406c1c9980f1ed6abc787d2baf22fdd16841621ae. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TCAFA2065154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee3becf951654915032df062924cef7d4d37cd5f93a4ab6c8e09d3323ecc436. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/US7VG2164907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1475de6872073f30541abf3d64ca871545ae0e939d39771e6132eb357a5a6cbb. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/US7VG2164909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a401890501448f78b2740bae9ae960e386dca93f69f0ec0a8b39ddd2ad728dd. 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/GBKPL2171590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a2971f67990e3763c79c5af223c8d21d84247fd3389b264cb30107cc33c384. 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/GBKPL2171591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2006fdc39a231fdc44d627a0a59959db19e800a12c031802064688b92260ef0. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/GBKPL2298642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36873a9c9a09c1c3fe6be9d9850e295d8c824d8f9ee19cc5b7080f12254f8f2. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBKPL2291548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c20ad5d3a97a03e3df21f614a5c15ad5b4080d0b939af2a1ee20f46f9c8b614. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QMDA72243198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109902c39ab548164be1a2b5d14b00e08024f2ec9e8bfbd6f39e7346afcada9d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TLREW2235233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ac7d70f1e79e37482b54b7c3b22f412d725450c67d505402b7ca0debd963e0. 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/QZVEM2306526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc835f1f5929cd4cc6193815b95e657e47471e4ebfa90ea30f1105d7bf80360. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZVEM2322122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3560a0b116915633b109607faeab9525510b2dcbc2aedc253f76bc660093bc74. 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/QZVEM2327752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee451cab54e36b66739c1864bc8f5ffe80ad297038b487f30c21227b8f7d92e. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZRP52337122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f1b59dd0aad2264093cd52dd708d5f071d8182d9692f6c838a23702ea89285. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2345897.
Russian Roulette (ft. Sueco & No Love For The Middle Child)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2486555ae13ecba1235bf74242eb9eb0f8a38a3f9d747e45e877634c0c565fbe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2230127.
Russian Roulette ft. Sueco & No Love For The Middle Child (Dr Phunk Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1631df1330e386f48e0dc8997a61a63f7115bb2b57ee1db853bb51073a426636. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2P2245849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7b9fda000e75e634f28546f16e0399defd40dfd4ad7b18d0eb3dd628f73910. 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/CA5KR2438652.