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 0x8c851e5cadd9a6a0672b552e88b7b34a047105572471ca2aac620c09107642c7. 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/960c3c92-c2e6-4792-8fd3-f2cb0da7c0f8.json and https://artists.proofprofile.net/proofs/artist/960c3c92-c2e6-4792-8fd3-f2cb0da7c0f8.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 0xc707a49c512d6e993f7d211e002fff8e8516e745419e922e9eba716ca53e660c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/FR1JK1500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2587d40878064e43678bc015a3d8b917b3965bc5dc3350463b9a7860053666. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM4TX1836011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea0bbe8b43bfd3fa56556baed7d65864db0eb9b322996ca1b99838650f07ed0. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBKQU1840490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8496baec7483121d89f338817300d188dccdf6c477ce212f9700a88a33b5d22. 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/DEU671900543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dc763548a32071e0c0614116a75888023951920634f9d03aaf855bc1290fee. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/US83Z1931758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5613cce05fd75d08a77e1b6d4db9299683803164c0bed3fff083e2164e128388. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/GBKQU2069216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a42821064ed1c37da54a15e521254492f77d09e887f3f581abaade8d75a6a2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLV62137721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947aa745369a235c7a94e784259ed135ace08b894e119bb35dab2a6b4c9d71be. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBKQU2327845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf81435591fb95d9ca1c2238b2a706236b1828d02a3d46396654ed74bbd3cf7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBKQU2396351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d19f857878e2351e263b2560df3b1cb7bc360f8b10d49e8c6ace87849a5a31. 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/GBKQU2522558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38365050dabe30f8bbdb359c7b39e1a1ae032b69516a50117b52abba3869424f. 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/GBKQU2522559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdad98ed7c644db180a7ebecf3d554346596227272b963266d3ec80631bc58cd. 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/QM7281794507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a7554f1b0188ca1d9313cf49c29ab320eb57abc64072338898bb8747bed5f0. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/US83Z2496076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a7554f1b0188ca1d9313cf49c29ab320eb57abc64072338898bb8747bed5f0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US83Z2496076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb217f79e231ba39e20ff03a5f4a6f1b63ea09bd7560bd122114f293e6f4626e0. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR2X41768956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f1c9a752e02b10eae0017c05dc7db17661db485d1fe72f0202923ba98f0bb2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEBE72300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232c79ea2cfb027cf1809a8536f36eff10269198040c62c0ef7758c448597908. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/US83Z2013860.
Sol Voyage 011 - Lost in Mykonos (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea966ccb0d443f5c2f292a5c7e704a2d019faac99826f464404d983b94df44b. 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/US83Z1822557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692a607fa90ad66b4c02e9e686560cb82ab48417d098eed1899470d09db5ba85. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/US83Z2005264.