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 0x3d6d5f816b1a7fe64ac90ec267aff7ea0883365abd66f1e7d9f2f00118c50228. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b67c312d-8489-4f94-beea-cfda40bce1f4.json and https://artists.proofprofile.net/proofs/artist/b67c312d-8489-4f94-beea-cfda40bce1f4.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 0xd4fefe1b8b23f43fdcd9752412b7c7825b709fd380c6798ab6c07063da9914d6. 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/US5NR2332202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d292f12dcdd48356041209cdca9fe27c1444acdf782d76bcf0e6ddebe17eb1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US5NR2332205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1e58f7ad823c307fedaf0acdf93a3ce5e32ade4a881c873c3eaccdfe535b78. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/US5NR2332203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fefe1b8b23f43fdcd9752412b7c7825b709fd380c6798ab6c07063da9914d6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US5NR2332202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1954533e384aa82276b40b52fba6cbb16ad36507c66b95c88c5c932245a474. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKXM42000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8fd11caba49f59fb7907ba3435d963ddf76df260ef8349863da7d7d8ec7c43. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLL562301593.
Unzivilsiert - New Frames Remix (Digital Bonus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf364e0c47a8cb22612e961f0b794b20dfa0cac5e00e43dbc8485e1f5efed2dc9. 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/NLL562301598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda526be502457e38e94c0167cd9c079b23906c9f236f49a3019894659209fb7f. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/NLL562301590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3d998f4c4573f7f961316f539b595dbd02394d9e26d0dccd3f9ae7cb001886. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLL562301591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f9ea0b09742ad46379fe312b8601c3d1ff7059b20ebbdde68702aea456848c. 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/NLL562301592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bad6bf89633fa5d8a9358508d676237ce84f4207eb6ea27e1682d1fe5b2a905. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NLL562301594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088c243a4231e2669526e744771cce02e811d0dad602fb88a0945b9794afc556. 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/NLL562301595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adf4bae88225602a3c9a3dcf6afd11a1171c336b59ab713c4a2b40eeecabd18. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/NLL562301596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d73c2d5dcec8c070bf7a7dfef3501a360c790024bb20a3cf156e6e62268d234. 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/NLL562301597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df08e02b6e5a99a7d1ff3a9d5669241c131dd2dbce520b56eca2486fb0e12b2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UKXM42000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0f5de40262f32e9777c63247d9b7d1db6b00a3675b3b5404f4ca5b84647e96. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/UKXM42000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c5dbc74ee05e0a7615651fdb3c2c8fc79eed585e63c5701086686ff41f3419. 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/DEMM41901245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174b0e70952c1f98b11a5d1f2ac226415c3c28f3f3d94173c606f85aeace175d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEMM41901242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eba8c7867e588ee9bb79458dd0075b5290f22c09f8434962205837b062acd4f. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DEMM41901243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75c73bd7932cc51390bcb559cacae48b84da9a436a35b58d89ff8f4dde2fdc4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLL562301465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50183a6d6f2b0b422f3a5ce69bfb9916872f0d1bc6b622f4004dbd2a4a319d37. 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/NLL562301467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda66477b9b74544eba0b2473223aeaa713c1eab27ef08cfb26dba45a85cd916e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLL562301474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f80eb9c5d2825188277d12619cc0b0d1535f2ecf0e1230aee06fed53eb31ea. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLL562301478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe826d4a6c971280467a13eab16034df46e2da9c533a450dd41415811b76fd7d4. 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/NLL562301479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476394e410e92870ec7e2fa29635a7a1cfaca0786bae707facf2a4000a32931e. 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/NLL562301470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5741579b1062b61a593225c87ba02a24d6d75ea15197667f9f2b09b3aa688743. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEMM42201189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b10981109efd7f5d15cc468a638b48896d3f783826330b2f9d608017a0ff6d0. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/DEMM42201191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2453301275477f7340603cb416d25ec21e12b739f000c1fab9b2c256b6adee04. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2062079.