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 0xbaddfa421ac4e97bf3d964ad7593f5e5ce87c40d349920d8074a6e02be885e36. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5ea48c3-9313-4597-9219-66754a43196e.json and https://artists.proofprofile.net/proofs/artist/d5ea48c3-9313-4597-9219-66754a43196e.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 0x2b81c2995584884b329dd8f5978f397309c9b5f05b567a50bf6e6c30330cdfcc. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:28Z), 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/JPPO01903597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a18986d918024552c60c7cb42774138f93f03be22eadebe86b11fe37efc4c0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPPO01903598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176c7380c4aa64a1fe9f5360cb4841cd186a3d788faca55228a2415c09a730f3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPPO01903599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfec423fc8b2e50d39d12ec035755180790e62dfebd2c073238a50824aef05d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:33:39Z), 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/JPPO01903600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6e1bb83fb544b0eefdd659e52f5fc74380da4be036892ac6bb0dce9dc2a6c7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPPO01903601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a4b09e8fc7274bb79ac1de4f08cef26b6c3bbebf8103503cd1dd7066176bd1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPO02004201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570a8d17a95007507c8e5bfc5686c4740f74e9a2d134feae2f181ffb0499288a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPPO02200561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164e4756ae9eccd78b7f60ba1e5ecde8a556c1151c1dc3b1402f9252a2e3f3c8. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/JPPO02300446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164e4756ae9eccd78b7f60ba1e5ecde8a556c1151c1dc3b1402f9252a2e3f3c8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:29:29Z), 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/JPPO02300446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5a72890e5b5c9988fad156ad9d86ab4190bec026ea372f413192aee27a1928. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:37Z), 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/JPPO02302666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16d194d78ffb4c2d097c9f4aaa2ce81c69a4c7e49347309cbe79f492f1bd0bb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPO02302668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d6bd6659beeb00ebfa34ee8f518e6559108f45a9f11cc30494d84909709520. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPO02302670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd281dfaf1baf2419f1e68549425c061a9aa95339c2d6a1ed644e385ce325ad. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/JPPO02302672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27f5d4e44467fb845ad3a1036b6e5bceb17393bb7ac50931722faae1497dba7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPPO02302673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a4b09e8fc7274bb79ac1de4f08cef26b6c3bbebf8103503cd1dd7066176bd1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPPO02004201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2871b3788ac509180993a48a130a5c0881bb0103ae2114a00e91b1d0c2742bdb. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPPO02302674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989be8fee3adaad71cdb075f7b76e5109ebc5b53151ace4ae223c7c5755acdb2. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/JPPO02302675.
未恋(「大阪・東京モーターサイクルショー 2025」テーマソング)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0238a9e9c8f98b82bbc99a45715ffeda3a27f7bb5700e00bf5ec79caa2018fe. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:02:03Z), 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/JP92E2500305.
miren(「OSAKA・TOKYO MOTORCYCLE SHOW 2025」Theme Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62eca707b551ca191b10cba31d3ab057351538f7e063471760b87113fa23a04. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:31:20Z), 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/JP92E2501222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504a857ff29c22b8309a52689ed93a738bddb355d90d8938bfc28139dd90e5e3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JP92E2501223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4709788a74036213d4943c0129e7f9926ab4e452e7a8656f6ac968127c91ae48. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:11Z), 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/JP92E2501224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9f36e48270d8acaa56ea79d9e36e305b21569d83403fbf543210db18c2e99b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JP92E2501225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b288b5e08f3dcb28dfd72187a37a0fe68edd6dddf6aff42a26a2d283a194445. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JP92E2501226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9a0a5e13bd61fc0fda4b8ef6f69323c0e02be093056d6caf714fbb730c5df6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JP92E2501227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2129b83574b3b1f4518ec028579bab700073cfa2b02bfd0f80caa96e2be6047f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JP92E2501228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f4a7d0166face9564ce55fad8fcd3f41669159ce7fe80a3e42f898772622d9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JP92E2501229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277cb0e659099986ff190b8dd644a5870a916c4261dc61fc62187cc809d7cbbb. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/JP92E2501230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4aec16152fe57e6d7ba41c47ff4e70872ebdf74cd86610dfb8709e70f938a0. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/JPPO02400568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7c21ae0fc320a3000af1466e7c785d3acfb2261120e1c3e61c8cd84a3c4810. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JP92E2500231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec94dd1e2c5fe993b7c282c34aada60618d5096196e99eea7792b489268e442. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JP92E2501231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0bc5078e488f3ce454b5072df7b411a11e3701f4011a60751ed35506867554. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/JP92E2501232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c3bca20cbb63bfe94fb43216e924812cd5b45a74a6d7a016f062de00f95a6b. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/JP92E2501233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2c5c004b36b6ac97ce25c93547517602c549b7fe4824790ac615bcc46c7926. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JP92E2501234.