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 0x3304a5f746965e0f5f45638f42529ce7fcb51033b5b672b2e143ec5037de20eb. 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/c7623b00-a20f-401c-93d3-0bee30f4f96a.json and https://artists.proofprofile.net/proofs/artist/c7623b00-a20f-401c-93d3-0bee30f4f96a.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 0x514b43d4c7e0fa9783c79700208a40b0a896b5525c0052ac3c741765cfd8baf7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPTF00401303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212275100b87fe88f089d934b544b69859aa4854a109fe2abb2ee1bcbabb961e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPTF00401307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8e910e5539884b7bc019634793e0a48785dcf6729dd05488971bf84d9a8b48. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPTF00401313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947c5b2b68913dc3a2cb5829e43e2fbe8f0a2a65f48e81bb71ad81fe25107caa. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPTF00500707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf807476c99a5617a4c0108b618cf97af4e1d6f7153a4124f61448c243148ceca. 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/JPTF00506401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad490e10e2579b77b193963c2344bcb1989184c0992b3ecd95da4a8ba64809e. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/JPTF00504101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27413cc4639e40517a70738b9bfff5a7a0eed653fc8bb3d6cc432fa7dc17b357. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPTF00600302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f7d05e3230225ba5c0e35143d2b7580fb4127c4b5088f12ab479bf48dc4177. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPTF00600306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab993aa6b63bda5201cee91c98c0e14cf460fbfff729dc2ae3e5308903e9d56. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPTF00603301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08e9cb5b8deca4ce6cb9fd161ef5cef14bad8896bfd70050c7c6e1c71bbf8ef. 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/JPTF00800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a0bf325a2dea94322f6f1811f0441f4b94a2d01914127adae02120a56563be. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPTF00911202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecee6ba2971dcdecb5bc93305e125bbd67858be8349ee631046bb45c96bf739. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:57:51Z), 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/JPTF00911203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccefdbef56398b3037525904f0ce51f5cefc1fc20a1454b2d4a4e3395bd8bddc. 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/JPTF00909601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251fb1e5448ed9b64d7f26c1189b23f89c4e51d59abcc03532f7cd511966e525. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPTF00902601.
あさやけのうた/すべては僕の中に、すべては心の中に
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab993aa6b63bda5201cee91c98c0e14cf460fbfff729dc2ae3e5308903e9d56. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPTF00603301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ba28aa813ac2a6873faffa878a8eb2676aae97c32001d3d0c28efda4a25fa6. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPTF00500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccefdbef56398b3037525904f0ce51f5cefc1fc20a1454b2d4a4e3395bd8bddc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPTF00909601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1f56b058f7e055b502154c5865424377ee7c38ce9677c64023351e3abad5ba. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPTF01109401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa084295421b45c27e737e6bd3c4785b6fc079324cb6c966d0fad8a1d4e76f56e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/JPTF01204101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa673b4511ec2ef2f0cb171d2a7d52bb550b57628fd09eb92b7813c6201def18d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPE871702289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc839cac98dd99ba1f80b3e6bebcebec7ec81e00b8069e717d663c6533a7a25cd. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPE871702629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74d79b7c7b36aac2acf40b1527ad1d896d9e5941b1ead4f27c12f2d1e396151. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPE871702633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e9838b5ecb2161e9f379db3a18b875c0e990ba01ff9e8f601c528c5d75b500. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPE871903359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339aa27593515d4431d9a4329362dba00218919ddd4bfe3328767d5791d6798c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPE872304716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb192b697e38dde47f28941f6fe11c619b1b32b6cc02d36dd2d0f597c08ffe0c9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPE872304717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d74bcd7dc84e8977e0bb14092cd29e1d16b5b649a2d36c6a0c575044385c8e3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPD2589838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762f0736e8548bda327cccf569d3dee260c650e9978268ab2dd08bce6200a383. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT66K2516984.