Hana or HANA may refer to: Places Europe Haná, an ethnographic region in the Czech Republic Haná (river), a river in the Czech Republic Traianoupoli, Greece, called Hana during the Ottoman period
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 0x927b5950540b05f525010a542ad9175f100892490cb2c08f525499068b9ca6f1. 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/64213f77-17f4-48e1-a301-0f30075b062a.json and https://artists.proofprofile.net/proofs/artist/64213f77-17f4-48e1-a301-0f30075b062a.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 0x6ea5052f9d238bc7992944330dcc0b48bfe4ca88ec4f35b41d8c9c38cb9c6c13. 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/GBEWA2307320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c9e97e39cd926269a8358acf54434d5702bad068756a43718337ba76c73573. 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/GBEWA2102381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf1c76abf62623136575892f8c94ac986f9037963e1ad73b1bbc276ce44bd65. 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/GBEWA2102382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58874b069f93880b3f658b1326bbe64e5dedc67ba030d5c6831b954437ecfb15. 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/GBEWA1905990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad6c08865002793b175c1f57ec07de83b9fb1c18d2a7acd7dd3129c52f8b808. 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/GBEWA1905991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84734156f433d80eaea6f29205c82e98a33f91f0c196ab4a8a888c6924dc5011. 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/GBEWA1905992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec5e19aa6abdf4e68464f6741150d662423699b0c65684a771fa219c7b83130. 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/QM24S1926742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf17a6d1668aeb2a2aa5fa91049f4348b5facefcfab036d0207da1c84e21882d. 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/QM24S1926743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51ea9f281bc3ff4364051208b19f25abe69aa3df82b7eaba9c8b1fe94bfb51b. 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/QM24S1926744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dd2804e1261e3b6fffcd606270043ae03ad471f81a1a9e3289afc4c3e97c85. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM24S1926746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ef467a7b2912fa87ec55232edc47f42585b54f770a85459be7b162784bbdf4. 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/QM24S1926747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a341c298f706776b528a31bd85786c96e281f14f25804f3561667309c83a22. 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/QM24S1926748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe886cd0412effa80a13bf048ce66d6efc5664dd936fab9ea1685cbea7fa931b. 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/QM24S1926752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e16624dbe5f71fd431d9823c13638a8f4902f46004f6bac9059931ba228b49. 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/QM24S1926753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0328f5eba5b14f649a2cda24751702b46e2edb62832995bf0650ecd33e5440db. 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/GBKPL1663709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91b2d7e57f2069594ad1ebcdd23e142c3715b3285324e62a68bec3ce8988332. 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/GBKPL1663710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c975b7d17d7fee69d144a3eccff570289f405e7e6ac6a280e2ac1e1d3117e1. 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/GBKPL1663708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d75c162eaeec2038b60fb77ccb863e79985b73d7fad6cf7b531a43f0991c051. 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/QMUY42100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4560e02028d27675852845b65a01d4514d3490532d8c25b853887e8bdd10cc. 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/GBAFL1800396.