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 0xd9a7bb4a65c4ed804e1fed038a944850a7acf7bd930affa9312f652c97fc6756. 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/5d988722-6ed2-45d7-96ae-b47f375bbab6.json and https://artists.proofprofile.net/proofs/artist/5d988722-6ed2-45d7-96ae-b47f375bbab6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Percussion Madness, Vol. 1 (20 Brazilian Percussion and Batucada Beats)
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 0x68096cca932dbec2a224cfac55cad8fc64927cbd0b34eb534e76814050311760. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/FR0W61469383.
World Drums: African, Samba, Taiko, Chinese And Middle Eastern Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5f855fc8d8741cc741cfd107fc4015a5a506eb70bc760d7f05532d5318ded0. 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/USHM80850545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8184cfc10db6bc84442b648ada42f78b4e8704ea79e02c949b58846dde2184f. 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/USHM80850546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7026cdee30c19f3c4a162424e52ec96c56dad574554a53973e052dcaf604be. 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/USHM80850547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee2b75285de65e5946ac77a661a11244eab53f94104a34d70d3d41be7ab9736. 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/USHM80850548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fd8f63e90a21a01136509b1f157b1a09e53123fcb9fd8501a6f32211a582d2. 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/USHM80850549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf619700a88f85064fff6fc5bca0c66fe2aa81adb76494d0421d1c2005fc429b. 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/USHM80850550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9597ab518b08dc19d8cdd51a26d7c99fcc009793fa6f0dd0f0d98c2c986372d. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/USHM80850551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da3a136995260ee49bd9b858947c1953fb3ceef09a3eef03a3dc65535ef2b40. 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/USHM80850552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b558b3737b74e3ac401510dbefb760de9c746baab9becf3c1a015c48ac1160. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM80850558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16218c5df55a167c95087a8368cf5cd682a9eabae19cdb25b5f75c101accc6ea. 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/USHM80850563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24904d97634ec3e33f5bcf3e630bdbf1be2ce59ab701fe469aed6943b50a9c45. 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/USHM80850564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63167a43ea1814c3d60c89e3b2eacffa6f58e6dd06f7f05e26621673ee2d4e2. 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/USHM80850565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0236a10bcadeeced50d1fcdb2434ab6d79d5ceead30d221a0f456f687229d0. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T18:05:05Z), 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/USHM80850567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc332233c44310bea013b1a371a663fc4ef51c60b977318cba9aa558cff0c066. 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/USHM80850568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77817e5c3fb221ff1558ad4174769c7e076723f91782066a46c70dd50bd5784. 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/USHM80850577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790b3aa63eac695ebca6f0bd49e2ea4d9a4810adb7eb59ada93fa49f3d5d8b58. 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/USHM80850579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eeae5c61170325e27a3b071aed5537ed6b462513fad09e01ab1c8a79af048d9. 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/USHM80850580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a098930d874d3151c384db3fcef4b6e02c06415cea7ceb13f581a085af0b87. 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/USHM80850583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e429a1795497edb3531382ca4c0017c331faac266c42de77cca22cb7eab4f2a. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:04:32Z), 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/USHM80850585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7282c4680773c73bb18207ebfeb23ff5b3c7dec2af0c9ebca00d775be61e5e7. 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/USHM80850589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61e011bf90554ee79619b0bdc7d339435e021b4f93023d1ff915e0d6c51cb05. 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/USHM80850590.