thumb|Phlake at Malmöfestivalen, Sweden, 2018. thumb|Phlake at Malmöfestivalen, Sweden, 2018. Phlake is a Danish R&B and soul group, consisting of Mads Bo (vocals) and Jonathan Elkær (beats). The grou
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 0x874f34b6214592e068b9724601cc8623abc05aedbb1c5d9dc748779a35f25d02. 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/2fe3f88d-85d8-4d15-8c50-3d46a828797b.json and https://artists.proofprofile.net/proofs/artist/2fe3f88d-85d8-4d15-8c50-3d46a828797b.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 0x20de38ab850692ec487be1493c002259de07bf9fea4aabceb36d4d0768f0c472. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKADG1600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1705d1ab7954719392cc77b9471332ed4ad31f1e1467335955cbfd1130a519c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DKADG1500458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591c003b982b2fab3583bc9cd84452e4f74c1a4c67b188380c51c2c64dc63855. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P1837995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48460b2b74cba796b5c68370257fa6fb23ce9867d10c1c7335062abb7dd0656. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DK4YA2295601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325ffa1c7558a9d150ddfa032fc8215c69f35cacf9d747cd777d1b546a1f29aa. 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/UKS3T2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018a23d46ac6fda0faad70d1256bf1beb00a2052747c75340c4dc1af842676f6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKS3T2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3034ec99ecdc018f3bbffac9337113a6f9f3936ee40dab5e22ed4672079d1f. 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/UKS3T2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9bd77b58f241de8785f852424c973556aafc5ae2a5a1ed4fa30638e40db712. 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/UKS3T2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2db9c7c739733e969f3b4f69d4a3317e868296cc23dde8b442d64b563b1212. 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/DK4YA2280102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525d823f6b121a9212fe6c0f2bdbd57cb252f54e0a54b8be17db9576821dd45f. 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/UKS3T2200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68fe3ac6326759db606628daaecfe8aab502f56c34b9de25223c95910b852e3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DK4YA2280101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0364f5b4f3db338ded0cbd5d6867814e4be73e9272a5d4ad118cd657f92ee9b. 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/UKS3T2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe379b21a2a1aa18d9c7a80278d1d713e4d8d8d616244c1ead1d58c273acb8d5c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DK4YA2155501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9115e51047deb98c0523be38fe7ed0339de02fc48a00f77f6f2dae58ca5e78a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:43:36Z), 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/UKS3T2200021.
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 0x29674c3fe07315eb732c2966f46952c268b81c059f5f96eb524882d31f112464. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/UKS3T2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc0bf18527c0a8d44fe54749dc96ae6bb1812f88462da3948911823e042aaaf. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/UKS3T2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11757e8e55f3fd210132c0129fcda8d11ab6eed3c8471e3ce3c24bd2bea30ec. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/UKS3T2200028.