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 0x079a4fdb4d01a9b7b767887a269d8fd7eba6974d13ac14dea7b2e7d93eb081e3. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1d80f2a-507a-4480-afa1-79379f79ec4a.json and https://artists.proofprofile.net/proofs/artist/a1d80f2a-507a-4480-afa1-79379f79ec4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Upa! (Original Motion Picture Soundtrack)
Toda la Gente Sola (Banda Sonora Original)
Dejémonos de Fantasear Con la Normalidad
Vilca (Un homenaje al Maestro de la Quebrada)
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 0x757a9c7de639f805444e234cab6de7e2b59369402dbd60ac2250706fbb9bc0db. 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/ARA902200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9168f0c1002b518beaa75966777e2b0776d6e22eb424f25bcd1ce60f8e27ecf. 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/ARA902200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736d84ffc363b18ee76c0d49658c01541274d36b9da53f60a5a31fb2c5998f1d. 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/ARA902200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f6620cbf982f02f5656cc8756ca677d8eb729b84afd3414a39baf370c0e41e. 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/ARA902200097.
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 0x8ee730915aee3d7e9a7ae9bc0dae8ebd86b044e3f62cc9f8cbf36122e081b0ec. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ARA902200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf114a3d3e536ceba5c185374bf3b5538b3ae133c73e2ff31fed91b17ec42dd. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ARA902200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb1fdcdfe6707943e897b0ed49a54d57b41ef3c6809e349cb5b115d036ceda4. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ARA902200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd133c88d98d220527a05f02fc1863fd381a5f776da83f2ade205fdb77235f4f1. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ARA902200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18da93a3fedad37da383b8c7d487cc0b7c054fcfba6332eb102d948012575df. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ARA902200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836c6688ddccb930b184ec926b8a0ad588c29c3a7670aa3bec587aba00dfeb39. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ARA902200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9550ea1f39abb4d28ed758d7fbfa88c9d8398de6be79b7ab238d58c0d633d1. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ARA902200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eaa79a10c09fd88a043029b908fc2b34105cc3ae5e79699e9246854b4f89a8. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ARA902200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec610a8ef731ded67b5bb46b8c42697c3fcbacd765a023e787ec187e5a787e89. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ARA902200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878bf155f0bdb371db88da2b0bba9aea7b8ebae1afb5cc68d28d6b31cf85bac8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ARA902200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff093785bc93b32ca1ba28a24f9e517d900198411090998f9125210e279a9cca. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ARA902200111.