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 0x7c5c9afa6621f20e54098e403e887857b4b554bc69a52a93daed41904c97e25b. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5e433d1-0b2a-4976-9a33-345e1e844e34.json and https://artists.proofprofile.net/proofs/artist/e5e433d1-0b2a-4976-9a33-345e1e844e34.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Scenes 3 & 4: The Mother & The Policeman (feat. Andrew Turner; Lindsay Kesselman)
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 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.
Timo Andres: The Blind Banister: 2. Ringing Weights
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abae3a0a2fc0e3472b6297f4b016a6bc0e57f4e313a223038796bee88b33180. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USNO12300396.
Scene 2: The Priest (feat. Chuanyuan Liu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65cf466635f24cd0b6e618c3630304b23a790c46f5d374b68e74c68f4e1ffb3. 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/USY252311182.
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
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.
Timo Andres: The Blind Banister: 1. Sliding Scale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57008088a36b37b2ca39b364e51380a2d478c5adff94a80d4af184d7bddc844. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/USNO12300395.
Timo Andres: The Blind Banister: 3. Coda. Teneramente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb581f01a8d5c9a7e3d364d255fbc6d016ce70ec259835fcb322b647f98f6a7. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USNO12300397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4c5544380b55f564b87b91541245631fc71a3626e6de71c129f4653439ae36. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USNO12300398.
Timo Andres: Upstate Obscura: 1. Valley of Strange Shapes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc826131f464703472233f83accb5d1f1eb5aebd508db6d01437f51f4629d5f4a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USNO12300399.
Timo Andres: Upstate Obscura: 2. Mazes and Mirrors
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2285847cca3b511f56f4a632748a74a19ed8aaf0a7092b3c9369547c9b37b9. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/USNO12300400.
Timo Andres: Upstate Obscura: 3. Vanishing Point
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d4bf664a191b589a8a5a1a48ed6e30a57a32d287e4ee9d8f9f0dbd9eca6d77. 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/USNO12300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba9a3243b7e5a6fbae1b9ed15588d853b79f92f078712a18fff24274de5dac9. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USNO11200417.