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 0xb8983c22eb083fb7fe83d8b062211ec5f17aa896a92a6b0772c07edd20fadec2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ee72614-5477-40cc-81d0-fc0404980701.json and https://artists.proofprofile.net/proofs/artist/9ee72614-5477-40cc-81d0-fc0404980701.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 0x1cc15dc6143b2956af5b6a04c84dd3f9bedca85bfc628c7af78b92eddba7814f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USHM92022331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4d0695dc4241f666ac11b3bddd1fe5f536f09abda894d8cf47aafdd25f91f2. 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/USHM92022332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66130e74ee776677531f3986632a8a7ab8f7586b5e1c4b9f3aee55c1e823af83. 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/USHM92022341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06e2a7597dd761ddff36c43c9acaebc662791908a256ed5d787ddaa3181303a. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USHM92022345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3342e78656699947967e4ec2e729711cbd0e587b839a9a063ad0ca4b4fea6684. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USL4R2057691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552426d8187f7c6003087a934801aafe546a2f594678a23bfda0e38bb65e4273. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USL4R2057692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115eb98d4b4631f350a03b2afe5c49c32115c4e5cb82c6916420f6bfd7dc2487. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USL4R2057693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01331052a5ab52e7a148431cb01f03c71ce6b335a31eee0e4e1c38dd1cc0b36f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USL4R2057695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb863759ae97f6f96663144eeb66de3b9a599b0e2925065244bd23d454be9971d. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USL4R2057696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fb10f58607311581932057a26293d94f73d9888c991a59115518cec3337dca. 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/USL4R2057697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b545535638215c107b7395f82a238b31e59c292f40bd22b65477fa9ee033c66. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/USL4R2057698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321ff4683015294e1ba216c3964a0574b8cd89b8709a1857c2bab2ea7f086f86. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:16:47Z), 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/USL4R2057699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f59cfd91a114de4d285cb651fdc0fd898e1b71babfe6d9af96bc2adc634730. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/USL4R2057700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bf0a99423c20dab0cd15e20de698cd9351188f506eab964e81ea0f97d2634a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USL4R2057701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2549bf29b97f675075f9eb63b752a39cf5811a5f0ffd0f122ad9b3a4b0ca808. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USL4R2057702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c3eea7d130f87e19805b375a71df44eec7f955ffaa381ee9c20b510b0c3383. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USL4R2057703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dbf85dda5fa7f3b961c6c8870308262eabc6dd9e09952d3b7a5adb01d13d13. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USL4R2057704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95e4f2d8ff8a4e6181f7e52dd8791cb135a140da7683bf235ce48bd2e96a538. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USL4R2057712.
Rain Umbrella and Sounds That Make You Sleepy, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ece15b496de8152480bd9ee64cfb2d4e08d32f4842131279c004292c29a2307. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USDY42122525.
Rain Forest Leaf and Sounds That Make You Sleepy, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6c54db7577fd54f3ae0f725d37ee2664a478343536866e9a2e18af99700835. 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/USDY42122545.
Sonidos de la Naturaleza Pajaros Insectos