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 0x6199d29aeb84ed6da60cff9dd965e363c2d79db0b85b16938a4a59d2f0fdc900. 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/2261182d-f2d3-4dd3-bc00-f3d4821077dd.json and https://artists.proofprofile.net/proofs/artist/2261182d-f2d3-4dd3-bc00-f3d4821077dd.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 0xb4e7bc731f5f36843964ed5299f61189040505ec5653e8b7bc1ba6c80ab51323. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/DEDA71901002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f1bcceaeec15c358a4f500bc18e9cf3b01a529ac9b720af1cd01a317ceb6a8. 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/DEDA71901003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6018815b0df2ffcd666b7bb7935ff7b7a8be29769af92007ef65399a695b12f9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEKF21900868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220624eff01c050d0cd3dbd9765a6343a6cea82d2e636a9425a5c0bab6e8ce80. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEDA71901009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6895ba3a5eb638991f3a8fa8aa8669c682f6a4453d3ce5d87aa327a2d3056dfd. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/DEDA71901004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c084b7072a5f334c7ded21e5780a31067d744aa99d21e3c697d41a6d92e6b96. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:08:09Z), 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/DEDA71901005.
Gorilla Glue (feat. Reda Rwena & Soufian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8bc0aea3a6d0e7ab90d38d62a622f25e7b2cf0117fa7875e0ab0cbf5a4f7e4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEDA71901008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f1bcceaeec15c358a4f500bc18e9cf3b01a529ac9b720af1cd01a317ceb6a8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEDA71901003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c3755304af83582f905e3d9843c5f07d162b829427bbf2cbf68ee0b6195a58. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/DEDA71901011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef87d9bc69fc2c44a65ab9e3598a0263a6b250d41820101571805e78bea4e965. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEDA71901012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d87541d77f56ed98136959c75c560f9e316f4879d2f3c04558de6d41b14e99. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX452135838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e5d55287e2b9aaf62ad6586b794e5e9f5eb33fdb73579d436fb131a557c2f5. 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/FRX452164370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778f7fceae456e60574d14f283d7b9820a339b7a91d14ea9e2392f144ad8e2cc. 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/FRX762120988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0970096f3f2f36497efd25300ee06e8dfe9168e07b56d6398f0ce1add32094. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:28:18Z), 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/FRX872167506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08899f76e2fae27277a831d88494f6a0088721a59d932933a69f2daf004b3c52. 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/DEUM71906823.