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 0x83ac14e1ad5812e36e89d94a0f96bdcd89c092f5cd4271c3f2a9300f11508f52. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9126a7da-2cf2-416a-82a9-be81dd433dd0.json and https://artists.proofprofile.net/proofs/artist/9126a7da-2cf2-416a-82a9-be81dd433dd0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Caroline Shaw: Is a Rose / Eric Whitacre: Goodnight Moon
I Will Learn To Love A Person: 3. I Will Learn How To Love A Person And Then I Will Teach You And Then We Will Know
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 0x71f9f0ddb4cecf7eec3af5e5591af3d05e424ae9b81c74e9e5eee6197e6b84dd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USY252143891.
Scenes 3 & 4: The Mother & The Policeman (feat. Andrew Turner; Lindsay Kesselman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed26810461a0b71ba705257c4a4c17c0fee589354984f9d5d726579e3b0f2c6. 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/USY252311183.
Songs for the End of the World: I. A Long Time Along
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadecf4aaec564401792991f0e41848ce5d9496401d5672045dbdb46b447c30a9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QM6MZ1782437.
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
Songs for the End of the World: II. Raveling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bceaef224fcf9596454ba7bce195e2508c6503afcfc02fb10ac62c63348905d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QM6MZ1782438.
Songs for the End of the World: III. At Sea
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c7cbe152c609010f306d00d10e9fed02d83c297ae4ac0980b7a063beaaf51d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QM6MZ1782439.
Scene 5: The Outlaw (feat. John Taylor Ward; Andrew Turner; Lindsay Kesselman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f65c77ababfa55ff802f20207dae7f6b758163415ff96fa7f42fe9628e148b5. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USY252311185.
The Pieces That Fall to Earth: No. 1, The Pieces That Fall to Earth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c2ea3f24ed7f1bea2bd3bf50ca59b1ccfc58aa9c2bee9da878c769fb67fc1a. 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/US7MN1900989.