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 0x4139ff946d801653a5ae2672d8c4e37d01ff4b406c1afe9e19ddbeb1fed12d77. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f55ac6d2-f5ad-4166-bf04-7d5d88c0873e.json and https://artists.proofprofile.net/proofs/artist/f55ac6d2-f5ad-4166-bf04-7d5d88c0873e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Bilagers musiquen (Royal Wedding Music) "Drottningholm Music”: I. Allegro
Roman: Drottningholm Music - Sinfonias - Violin Concerto - Trio Sonata (1958-1970)
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 0xc884b584b395e315a788a7b4c711a80cabd24f115a45b29ec8e923f228a88326. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417010 — a six-check JSON result.
Bilagers musiquen (Royal Wedding Music) "Drottningholm Music”: III. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1233eb0b37f35547c898abf7c2ff59f1a3477e81492d153b8977b252518de416. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417020 — a six-check JSON result.
Bilagers musiquen (Royal Wedding Music) "Drottningholm Music”: XIX. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504a817a04228cf84730db8626018815b38aaa769a51e5077521160fe2ee3f87. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417030 — a six-check JSON result.
Bilagers musiquen (Royal Wedding Music) "Drottningholm Music”: VII. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5cf012529203017fb8e83d5321132f34c0e8b98060b4d9b6b561f31118aa3b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417040 — a six-check JSON result.
Bilagers musiquen (Royal Wedding Music) "Drottningholm Music”: X. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c02cad8773252226cafc7c5c48289120ec1dd73eab031982ae9dc54608acb6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417050 — a six-check JSON result.
Bilagers musiquen (Royal Wedding Music) "Drottningholm Music”: XI. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e1a1fe48dc92ec61c6bd460dcf97de5a3f6197d567fc9fc058b75544ad79d4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417060 — a six-check JSON result.
Bilagers musiquen (Royal Wedding Music) "Drottningholm Music”: XIII. Menuet - XIV Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0a673345596e89e98f30419b2462be3aca7dc2a10a453ed9662eb27356fa3b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417070 — a six-check JSON result.
Bilagers musiquen (Royal Wedding Music) "Drottningholm Music”: XVI. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b46bb02a03909f392c78d16265b830b0d929fae0724942cc20e8bad2c68a2a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417080 — a six-check JSON result.
Bilagers musiquen (Royal Wedding Music) "Drottningholm Music”: XVII. Lento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80dfd54c69eae93ae0b483e4bb63be7ffa524a2425e1e62df4a9345c2139c13. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417090 — a six-check JSON result.
Bilagers musiquen (Royal Wedding Music) "Drottningholm Music”: XX. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4b4f93863db28e851bff6c1b4e9403e885e1d86c2dc15eb72d4ca12d8ae501. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417100 — a six-check JSON result.
Bilagers musiquen (Royal Wedding Music) "Drottningholm Music”: XXIII. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831696b6ba6b76c97c7e9885b204197e0de1295a76ab505a45c55828df15cbaf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417110 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94c102de219a3aca9f7fcfa31b6c9764e6d5d2b300beb879d3db455dc344bcd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417120 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d2437282f344d06da51711df93d00d16b0596cef529cc261d80ec4a68bb184. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417130 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6ac1c54e1937b68a9bd3e673007cab24bbb85d2dbf759df5e4135cc5013163. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417140 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aa0a39d39e870542c2219ae6dce0ce2a00a9f4e98e17df2b4bdefedf71c607. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417150 — a six-check JSON result.
Sinfonia in E Minor: I. Allegro staccato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49de04343d0333c8fe8160b62b77f2dcd7eda3d7ce4b3a3739f5cba1029793fa. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417160 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fea9fc4caf0294d170abb6c517d30dffcc254461d65ae17b6087493291ff78. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417170 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df8e6a3c17dda6c87331c5014f86778ce21c496011ac2cf761de110bf1fcc36. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417180 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94d78e083ec9b867b6a83e6867e2c4626be9a2f2ea601a5268f5f2e50f6a1c1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAC9417190 — a six-check JSON result.