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 0x59f73971c2e5ad1d3b61025b200cf4fe61882d09ad25250181ac17faefd7c72b. 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/05068ed0-5299-429e-8dc3-c2ad39b241a8.json and https://artists.proofprofile.net/proofs/artist/05068ed0-5299-429e-8dc3-c2ad39b241a8.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 0xac089ea7207801770e4204e12ef740b608d4d5872303bb21694689116bbbc8c7. 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/ES35G1200937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5da9918d83d97d460e350d6c83f5bdc1bc663ae69928e0654cfed9f7691a05. 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/USQY51768752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7a432d74dcddeb285689316c380e6775be97584bb5322c000de3d831dbaaad. 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/USQY51768753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1298026219853215c0f8853e53427d23af11a001e7d230aff8cdc9a969473cfb. 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/USQY51768759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf8a459e8982ec1234bd441ae845e9baa0600f3fd6414eac760dc5ca03456d2. 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/USQY51768760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3957681070d7d676dd8f2aefbf3f9fcd394ecdcd9bfa58161a95d6feb62fa5b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IL5001500802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbdd47b92dc19fe11d6a50d873402a07e842f30cea451724ff5f139fac7f02e. 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/IL5001500801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ae3a2d36851da46c7c74e5628680708d2cc428cf13001a890efd53b48d47a5. 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/IL5001500803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a3bb85034b55b1e52a25b0ebc94ddb3e7b241642c3ec9dfc68c7fdf3f1c3a5. 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/IL5001500804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa760604300f8dd5bafdaf18ff286f8bc2a5d0b8194f4a580b32c4c4e79c049. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:17:08Z), 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/IL5001500805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac272eab08fb4ceb96bbb1923bdf621754720d2016bd4b5119e24cee6120f4aa. 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/SE4MF2200524.
Celebration Santoor (Laroz & T-Puse Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0e66183f2828daab80e3e472c477d961be422e53dffe918093a3801484e52c. 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/ITZN62100374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac09ed266e295126bec8b154c024b534c79e655f9d1e2fcf50ecc73cfa68614b. 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/IL1042104291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc893c5289e120d88418a8dcbe0e4191deaf53982f1151aa87f7c24e3637e5b1c. 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/US83Z2120261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4020dabfdc2b3345a023c7ed2ac3b5efd2574322c238531d26118eb9994f0ecb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X2141775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e64ff4d3410ad0adb5f3cea5229c8a5d39e05a5ed069797f1aa1221f31ba2e. 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/FR96X2141774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dd7b40fa8444b0f3aeada98a9ba7d70be06674c10ce67d5d561b6496a6511e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:31:01Z), 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/US83Z2108672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecb8adf5c5944d2d8401fa489cfa035ef00e0a046c95a810f241a85a9a70d2a. 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/SE4MF2000327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5eded429009effa78c264ef15f0a6f08d0e22489cd64e20b52d9bc29325915. 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/US83Z1768386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd70a993d734a8a4bfc992733e2f439f8992632e5f73b5aa1358b4d4e00f344d. 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/US83Z1768393.