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 0x03157e53ede1882ff46c2a83f36841926f10528334af05a111e736267e0a2e19. 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/f153813b-d99f-4f67-b71a-c3c1cb57ad1f.json and https://artists.proofprofile.net/proofs/artist/f153813b-d99f-4f67-b71a-c3c1cb57ad1f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1ebff568de6afc386396cd0d3b84ecb812c0f1f96595a58aa1e34600465c60. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:00:35Z), 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/TCJPS2257833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96f74dc6ae7d170c77ce831f9b4a11597490524c233c4425068e44356d6f3f2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCJPS2257841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748fc43fa735cfc8116e18ca6eafe820741bb87d2df7e66690399462052e3552. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPS2257844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1ebff568de6afc386396cd0d3b84ecb812c0f1f96595a58aa1e34600465c60. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/TCJPS2257833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748fc43fa735cfc8116e18ca6eafe820741bb87d2df7e66690399462052e3552. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPS2257844.
She died under the bridge (Append a Last Track to "This is a Portrait of MoritaSaki.")
Light ("She died under the bridge" - "Ice box") [demo]
Light (“She died under the bridge” ⇄ “Ice box”) [demo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50b6aae713d6d6c32c626590f624ce47b26ccf66e424aa629d37c6d259c000a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPW2354075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51b983ad0495990dd90c4ecfccb546a1a8fa28241d5fc1cddb0e8a05ec6d24d. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/JPS802356471.
Portraits (Delete this from your device once you’ve listened.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f92bd70593836c7a4629c76c4955dc3413d06ec57c766168440c5ad673e03a. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:59:41Z), 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/JPS802356783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cf619cb5c2a2a37b9e723bcf758f95a4619ae29b909c72a0eade4e95b6600f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:00Z), 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/JPS802356784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979c472392529e13130fb57298f457872f1d22400022395e7fe0cdcddeeb485e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPS802356785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d401758f82578d3edc9bcb0a0c34a0d8676025d3de31ff02ad3ed9a8829f2c4. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/JPS802356786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb418ebd9611951cc84bd9e4aba9ab5317b45d74e51ec605301c964580131d7d. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/JPS802356787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d95ceb98476785d4de87479ded8f42989e6f059bf3a12f618efa89ebab3ab0. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:48Z), 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/JPS802356788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23c336229e1d8befbe27c7977fb6d7bb0be715f3d1090ea6e785728af42ff7b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPS802356789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc735c7f990d7101859b00f3203c17a573043e14128e34e10896bd9ef8b06c8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JP92J2503122.
Raindrops / Sunny-Side Up (What was frozen in the “Ice box”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4531c476b148d9b3f7204bd3dcbcfe335c0691076b06894767d61fbe6d6786b7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPL542400273.