thumb|Blueprint for a Butler-class destroyer escort, 1944 A blueprint is a reproduction of a technical drawing or engineering drawing using a contact print process on light-sensitive sheets introduced
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 0xbf94c513c0db9873c007c90e02e028b53ac007d5c6b048050550a9c7f920f41b. 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/1a4d6288-2bba-420f-b031-6302470d025c.json and https://artists.proofprofile.net/proofs/artist/1a4d6288-2bba-420f-b031-6302470d025c.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 0x3ae17d8dc64e4da6b06b494613c97f65c0a2c0bee877286a98f9d67966680307. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/USMXP0810037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb6a9b4e20bc6c1744a3719268e06142e4883762d57f8e30cf366f559f99094. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USBWK0500161.
Adventures In Counter-Culture (Clean Version)
Adventures In Counter-Culture (Deluxe Edition)
Adventures In Counter-Culture (Instrumental Version)
Weightless Radio: A Collection of Blueprint Instrumentals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2bc80fe7e58bfb091ebdf6fa68e1aad3414c88896e7b2ed8112765dce326b4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFME1402876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98df9915653f09cd0f5265ff9af6333ed0a1c522e6bffe9ff6c482d3cd9209a1. 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/QMFME1402882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd5af4bc3e94c39b21f5f3a4d547fa1a73cbefaaa4becb75b24f7a08f007516. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFME1402883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5512e36674470b043bab3230567fc3d59b5250b8c7d19376620debbe64329a85. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFME1402884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3464f014452767203c7ee8e9fd31437ee47c0113fbf58aa7b277c315a72b45a7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TW1504767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2742b4ffbd42cfe1b591bef5db26a504c6dcf3dba1f6e06a125ab642b6404c7c. 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/QM4TW1504774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4406fc2d89d01d35ff97aec1feb1c985f61ac1ba3c399b56e3a1cb6b98e70f57. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USMXP1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3f3769f83465fbdd67274753bbb32d5dca5d548277481d0026e963b6886c9c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USMXP1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765c4177ff141bfd8069d5f1b7f1b00978cb44b4d4287770b3a1b3aa4231f9e7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USMXP1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16be5920030aee21f3da376e9d2213a614eebd8b13a7312355b574fdfaa4c30. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USMXP1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a33df32b9bd70b91d7fedc5d65801940eeed4c4d8a301650367a4b9564c290. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USMXP2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3972ce7dd0267b3986b3d17ea9aa95ef9fb0b28c38053dbd88b235db2ba57c63. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USMXP2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bbd5dea14d9cc72e27362c686e166fc26627b346d2a6f88cb261dfd81a0166. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USMXP2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a382b4619b00965cb24d2be9a10a94b39587037b478aa49c76db25f618de37. 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/USMXP2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde871b8e9258caa94846255ea9c4cc80ff4c8663f9b43289d659a3c2c89c2a7b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USMXP0810132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ebda9e26c96dc7d902629df63fb044466d31bbba5d4524e50247e8d23c7143. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFMF1394531.