Towa may refer to: Japanese municipalities Tōwa, Fukushima, a town in Fukushima Prefecture Tōwa, Iwate, a town in Iwate Prefecture Tōwa, Kōchi, a village in Kōchi Prefecture Tōwa, Yamaguchi, a forme
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x898bfa1fbdae0d7b69b7930becce4faf838d23d61d1f15ce41d67ad036b6fbf9. 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/b7013523-8592-4991-8473-a54646051356.json and https://artists.proofprofile.net/proofs/artist/b7013523-8592-4991-8473-a54646051356.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 → block OTSBitcoinBlock must exist at that height 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 0x7837527ac6a8d86ff8ee5f753d0e26d20cc5d069fa7bd3165bb6883dea3d6146. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SE6QE2379428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290a625c04b8382dd932249e5a702b2827309af77e028acc690d683ca23135a7. 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/QZNWY2444211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8d6c17b5992a97ec5c1b1e0dbc3a4c8e7d0dc9630f5f94472aaa525b686554. 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/UKEX32500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec02299d7c1a8daf59bb0b1d1e2151dd78271d3857a4f6c861d2c3cdc3b94487. 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/UKEX32500302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a2c912eae5aba49bb397bdaab5f3f2aa8b2b57ecc80aa8d9f912f17a6a5573. 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/UKEX32500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140ebc4f212814e3157a76ce2c188d494491a4b191c2df9d02c2134448315cdc. 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/UKEX32500304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15551625fd65f4b3f88735d601625693624f5a81fc10b90c5f69be2f874b2b0. 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/UKEX32500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec40d3f11990ec1b9d7b68e8ddc03bc38a732b004f0bbdbcbb466c083ea2f70. 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/UKEX32500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61739f01e84235d37b46e0a8b30d3d547a4da451330318ef5765b2a24674d36d. 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/UKEX32500307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1424ecc3abc1538575e00ff1809def46057ab992d213938339886ee5ac1be389. 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/UKEX32500308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80b935f0baab44fc70ce7bfb17f44b6fd5fa658c837afbe76c6f0901ca8582b. 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/UKEX32500309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ec5b058efdf4b450dec2fef2ae2eca05b6091c3ab61acf9dd8ce45ced05943. 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/UKEX32500310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5543695172ce67b0d8289fd39396208d5d55cf286db578c9d7b6443ff3cdd54e. 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/UKEX32500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b78797937ceb63bcf75b5d44eea27ebb02453c4a7aa71bba0bad9434f7d6a9. 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/UKEX32500312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75251ad8a70baa8b015a96a9db3167ef1a1d1ffe52048b7f3965351a9aea1b70. 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/UKEX32500313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c6983a2fecb7f0ab712ac0a46935c302dec8f3067cffec7006618021c3b189. 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/UKEX32500314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105bf40010dc5c1dc31b22f6b6e3cf50fc969cc259cd75231a28afa136869007. 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/UKEX32500315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a9b5570dbbe1ac2e78ead9ba9b7bfd6333e0ce4167f6bfb5756fcf9ceb25c7. 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/UKEX32500316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094b61c2af8dc63f279f1c57e1210821049e3315fc08c67995033ba2eff03274. 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/UKEX32500317.