Hashi may refer to: The Japanese name for chopsticks Hashiwokakero, Japanese logic puzzle Hashi Station, railway station in Gōtsu, Shimane Prefecture, Japan HashiCorp, open-source software compan
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 0xdc0744a1043fd16ac05811f3b3385631cbd695635744b0d0e54152a26b977d7a. 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/09dddc38-0e84-444b-8f64-7b127405123e.json and https://artists.proofprofile.net/proofs/artist/09dddc38-0e84-444b-8f64-7b127405123e.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 0xfc2fa017c93ce9d72e09a5454bb4f1dba1c2a1c48618ee46546e4ea6ffe1fc89. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BX3H92100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb928addbb9b99e4bed6711033cd83e131ac0cc814c9ae4eee9cd64bb6f4a59f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX3H92100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4ac656a37b378db17542c3165c204660aa7220815d12a65dc4ee5b4d5f013a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX3H92100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05a22a8be08d6df68b1dbac048cdfeaff80e42789fc0abc7f63bb9aa1d66f82. 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/BX3H92100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d372d27dfb529b084beb66595f7e3230ca9ea02870d1b632bb0b37af4100574. 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/BKM2L2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69c0eb1d5ad9df6c3e73f12d064835199f90c2d11f339d29d67a0f728536295. 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/BKM2L2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0c1b307678a2cb937ca7840880ee5a90353241c01bb77e40493341838e325e. 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/BKM2L2400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890a098d51477e524faa9643ef898b94ffca56f5072e46afe1810e8406816e7f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BKM2L2400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835b5b4d05805703451dd91191fdd903bdfd6719e6abc904bed2c2b80ff335c9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BKM2L2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288f2aed9575c7bc9cd80fbc98583ff759c7cd30431ad0d0ded08e3751b3d1f9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BKM2L2400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59195c1b464971f97a1d6914e413c16a9cd9df892a3f1ad1a27b9fd17ab85395. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BKM2L2400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48c2d4bc5b957c9e380b832435a5180b9bb3e06bed0f52a7f65e4bee5e8df6c. 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/BKM2L2400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce6605217f2d816899bfe641d939aceadf849c389a46315efb13b8e2e4778bd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BKM2L2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631b22ebf203d46119ec6e374824c6b9640801dcfe63711e978f05b499f15625. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BKM2L2400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce6605217f2d816899bfe641d939aceadf849c389a46315efb13b8e2e4778bd. 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/BKM2L2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efd6d50225fa3729ca859cf4e8d4b4c41c65de85700c33178eff149d0dd07be. 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/BKM2L2400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0c1b307678a2cb937ca7840880ee5a90353241c01bb77e40493341838e325e. 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/BKM2L2400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835b5b4d05805703451dd91191fdd903bdfd6719e6abc904bed2c2b80ff335c9. 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/BKM2L2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69c0eb1d5ad9df6c3e73f12d064835199f90c2d11f339d29d67a0f728536295. 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/BKM2L2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96567bf00fcf896e2cdb2b4b481b579f1169fd07c246618485bb699c3f6abcf0. 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/BKM2L2400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288f2aed9575c7bc9cd80fbc98583ff759c7cd30431ad0d0ded08e3751b3d1f9. 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/BKM2L2400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48c2d4bc5b957c9e380b832435a5180b9bb3e06bed0f52a7f65e4bee5e8df6c. 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/BKM2L2400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890a098d51477e524faa9643ef898b94ffca56f5072e46afe1810e8406816e7f. 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/BKM2L2400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631b22ebf203d46119ec6e374824c6b9640801dcfe63711e978f05b499f15625. 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/BKM2L2400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59195c1b464971f97a1d6914e413c16a9cd9df892a3f1ad1a27b9fd17ab85395. 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/BKM2L2400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ab8ded6932b2c072f8437914df657d43ba246e40f442c6c8a255e81ec2657a. 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/BKM2L2400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1848f1590aeb24018029f90611fc5d763f328020ef5e6ac88afc85dd6f5fd9f0. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/BCHT32500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5205a7d4addaa4ae6248b28ccf5e1fb9f701dc709d9b4460fb6c8d3e866536ab. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNMU2502083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817e7769df2a8b808b3efd355c4b3f7ba7d062a6724d24103817d78a90d1b408. 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/BKM2L2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa284d95b8a20f540f6f4af0a549c51c2067196798945ccc8676306de66b03367. 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/BKM2L2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4c98ddb045cc9df24544222af499742eaadd98422c5250defaa2720eeb68ed. 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/BCIOS2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae14423bee60264a5d5c45f4758bfb23fcdedf1aafd842d6a3ab128c0446ab55. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCIOS2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174ef3deea8c80971164e786563598ddd45e0dc3272373a08bb3cd47760be81c. 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/BKM2L2400579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae14423bee60264a5d5c45f4758bfb23fcdedf1aafd842d6a3ab128c0446ab55. 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/BCIOS2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cec8afc49a9a8f6bb71bb84b901f165330a5ecf2191a0ee12fe1acc22d1aa5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BKUDN2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817e7769df2a8b808b3efd355c4b3f7ba7d062a6724d24103817d78a90d1b408. 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/BKM2L2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dd2d81b56d9dfd4abb0a1e0b9d69abb78f92d5d2736bdff45853b8b86b44bc. 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/BKM2L2400300.