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 0xfb9f61da844834cf5c70ceaaa3f8f7e6c453afed70d1ea5cf3d7e559df167ee3. 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/25bf614d-f6c1-410b-893b-b131c25c615d.json and https://artists.proofprofile.net/proofs/artist/25bf614d-f6c1-410b-893b-b131c25c615d.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 0xd1ce01c87ef943e64a62eb22a1973a9f0d66ad93a237b7ef0a0dc3e6b6841d0a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ESA011940308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf72f03c820fa848a810e3b165ad04f3291425589489ab69ba4a2539a5ebc22. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ES6102021902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6c9b36ecbcec3c690fb4c5c55b9bf397bee7fcc1d146b942b77eed462cc03e. 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/ES6102022201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234eb16218eed3fa6556b4021ee900f7bed8fa7a926c483e190501541493e440. 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/ES5062308001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356dfe05ae17f0c972cb8f0d9c426714a0a129c01b628ced9431d06b20c3da3b. 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/ES5062413001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7eca9dbe955aa19cd7e557846cf8d6c54e0b3f99051b9b69f0bce4efd6b436. 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/ES5062406201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d74ee2fc270cd1e8998172b9932c23550768816972fde7a9094d3f86009ad3b. 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/ES5062404401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecf3e6fcad44ce3694ee97fb889436e36d176264c8f975dcfb91ed3434b080f. 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/ES5062410301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b4390bc781bf42df7544632121565c6a02fadd67be98ed1528d4908a4795f9. 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/ES5062413005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fe6ccb6359c66e8b5397cc2c165345841daef4545a4d0152130b6df9542a1e. 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/ES5062407801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b0928bafbf9c5e0c2c5cd74af6416838b1896910ec90edd72bcd6caa29ea59. 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/ES5062413007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fe5d361ce99b76e45dc7d0cbebeec5f1ecc2617a9802dbaddcc3747e8c8e53. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES09C1700184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ce01c87ef943e64a62eb22a1973a9f0d66ad93a237b7ef0a0dc3e6b6841d0a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ESA011940308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b43813ccc10788dcd36629065b7c4def64cfaaeb97bfa768cb8ecd9c1a04776. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N21756360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037a8ed1abb5b9cbf3d040c6357f9bce622c202597d75a7d3e09881fdc5a5894. 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/QM6N21756366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e242f57801aaf70a246e312dcf01abec19ff579dc787a61e3b9241d33af036. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:31:37Z), 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/ES5062413004.
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 0x59213440e221d416e444311afeac89a72911793b42153897154e7b231e1024af. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES26E2316219.
Algo Raro (ft. Teuma Thug) - PERSONA Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e17377ad584bf7290d403b9cf91035e0bbc0d0babc0877216344065aa9579f9. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES97D2210418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335ca131c444a5e2d8423a4337e39d6eff1df9af3802aa5d9954cba560de2586. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QM6N21756365.