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 0x42bd5f7a2cdbadc765cb4b4cc7e36b2de9ffaa55c4989d589eb2d0002420df25. 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/4d68dcc8-958a-4659-854b-9062b50fcf43.json and https://artists.proofprofile.net/proofs/artist/4d68dcc8-958a-4659-854b-9062b50fcf43.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 0x1ba49a9970d54904b256b3a298260556fe77da3df5b30c8848c25b74257ba2b4. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/US83Z1806221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39bca06d1650f9b544d7c29f0ba14a24c765d020ecd2ea97bdcfe12f19a429a. 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/DEY031801458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b9b2ac2b8dace381a56b6964bed85210033d0f0294a91e2bd5255539cffe77. 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/US83Z1911867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69d7af221420b8b9a5a9410d2d4c9a1ea110a001cc390fb268d14e7ae8e30a2. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GBEWA1905982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4271a5c5a18ed208050f110f4a78be51872abf7193d5530561df60d23ef787f9. 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/US83Z2025670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cc85de1c04574449335bf9a3624a7568e17807e2f2dbb261243696e45df719. 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/US83Z2025671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22a6d354e15f8fec68c2ec0434c203d353c6a84240d63fd14ff1713d58cc1f3. 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/US83Z2025668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81596f22ab1aa67e318e8765395031f2c33d7c78bd7404ca11fc11d2b6663742. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/US83Z2318191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bdcae29c1e6a07f281ec81dfbdfca48d2d3a403f54cf2166dfa4af56197fd1. 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/QMFMF2330537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9f24c08bfd0a2c4229362e1806aa7eef24f6b993259627dc9c5f33ca3be369. 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/QMFMF2330538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c296ad805effbd6caa0060f36da3ca50d8cc460f03fa049681d81c7c4c9b8d0. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/US83Z2460974.
Kasper Koman - Biome / Mike Rish - GT (Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcebbf290e3a5082ca4faeabcd3866271b3e1315a8fb7f0036eaff1a9a294b68. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/US83Z2542027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b7c28d72e1375a75d6729ef96b68887680ecc801bd11b561cbd02d4bc3c8de. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/US83Z2473402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b7246081ff931e1a12505e276060b473f5625b8cea3666a51cbd33d7e7ab7f. 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/GBEWA1904141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4ab4193dbbd913b7d4dbec55a474b748abe70d987018f03b50cc22522ab58f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBEWA1906066.
My Golden Cage - Kasper Koman 6AM Reprise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9497fea68d3b732d89efea6212accede12183a550e47583ed6f5a618b8fb79. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBEPM2101594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee0bdb5ee28149a5d7773c22202254f9c1a8f5c23f0a8ca85708acb83954597. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBEPM2101606.