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 0x9371ea317d965063a81dc0a905ed37a4a08a76abbd9754f74ea43f7bc2ea27bb. 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/4913c95d-bcb8-490e-8c0c-c09cffa62392.json and https://artists.proofprofile.net/proofs/artist/4913c95d-bcb8-490e-8c0c-c09cffa62392.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 0xde7e3e0b32cc3f4df40ea9cf58ceae9c097afd5c2d5857b91753e9b616c211d3. 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/ITUM72100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d46150e8f033ab0d874a696bc0e04981a9c063b735e7cda8664d03fe0e2f29. 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/ITUM72100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bc9a2a02de9cd0618c17e256b1b2418f2191f1e70f8c90ef0b9eb50210d1e6. 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/ITUM72100189.
Smith & Wesson Freestyle (feat. Marracash)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fbfc35baf6b28cb23859e94947ee667408e312db936bcf792b0ba32c5ea759. 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/ITUM72100190.
Champagne 4 The Pain (feat. Gemitaiz & Noyz Narcos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33620fd1fb7e824914cd63a39ffc20d13347bb7ad5313d9725c9eb0fd6aa6240. 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/ITUM72100191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c7ead6a0e0965df6a779750c3fcab0bd6ab005ab8d5d1f53a4e9d0a3b07972. 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/ITUM72100192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0674e35cdf51dd722dff3205b5b76d6a03b5b577c6874951c02cd9dcfbfd1a21. 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/ITUM72100193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea78e1cb0170984ba1d5cb101632e0ae7d9126be348a82eea873a651b44e54e9. 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/ITUM72100194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ee356414876c7e5f949289af481f65d2f89b99e4f9c169d52828fef2ac86d9. 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/ITUM72100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099b47fc6879053075fc7ebbb269c4298fa8cb2380f5a97093fa073661b1160c. 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/ITUM72100197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f209f8e0192f225b96bc284c21e54d772ff582151f44e40081b47e96428a554. 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/ITUM72100198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc57c02d9ccd0a5cacaacd6e0cce8b90800989b177f987df7b19a0f058688282. 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/ITUM72100224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbeee3e327cc2b3ee14114d7b9cc1832d3059a8d3dbb38c8d6e74facbd36471. 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/ITUM72100199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fc3d905f9454c4d98b24f0c3d8d90d0f79d029860e6762518f2bdc9f2ee24d. 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/ITUM72001352.
Il Blues Del Perdente (6 Gradi Di Separazione) - DJ Harsh RMX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152c13566ce59d68a689a2d7ca9e10cf20d1c59605d612bebb97b2517077c55a. 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/ITUM72100142.