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 0x5498dd2d872f3498212c05a27c06b6ea91411239015598f2c07f15a4e8915838. 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/5ec74d94-052d-44e0-8856-cd00edb916d9.json and https://artists.proofprofile.net/proofs/artist/5ec74d94-052d-44e0-8856-cd00edb916d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Syoujyotachinoowaranaiyoru -Everlasting Night of Teenage Girls-
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 0xce75dcf922472d482f7ba8eda771fe67abc7b9fa037ba696fa80de6c87af61eb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPD1548109.
Sakuranouta -Song of the Cherry Blossom-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c17664552b865a63488548dacbe09d8e22aa10578e8fcd7d549fdd7a8a6c2fd. 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/TCJPD1548115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24856296f07168c0b1f796c536a9372706ee1765bd15a542493e76bd603e0371. 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/TCJPD1548084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f58986499cd62f19d3bc68e10e78cdd1047b5b02c1d9fbd7b1e5cd7e673c00f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:59Z), 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/TCJPD1548116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb308ee9d714dc2dca9388fa284f4a318a4d31af9974771d753dd8d4d41df84e. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/JPPO01701887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116f3b820f5daa073748af288dc9ba492c333d482260175d7a52fbddb76b5a88. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPPO01701889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb308ee9d714dc2dca9388fa284f4a318a4d31af9974771d753dd8d4d41df84e. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:25:43Z), 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/JPPO01701887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116f3b820f5daa073748af288dc9ba492c333d482260175d7a52fbddb76b5a88. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPPO01701889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77ce3808839f9d81cde484915cc2758a421fc6215564a72df8a84bed61605fb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPTK01706670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77ce3808839f9d81cde484915cc2758a421fc6215564a72df8a84bed61605fb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPTK01706670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a7c5f492bed38e1348adc4df986d37df09edaabf2f689eb1ad4e140a5dccb7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPTK01706680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6e04b8ac021f358afc531c0fe048389768df1d7de24b56deab4f794ae07911. 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/JPTK01711120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69d397a8968600a9c29a2da5051aa4e01fa593f7acc5243680f5d70bda6de00. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPTK01800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e445ee85a0ae1c6cfa19f7e70917ca28973da525be0bdb827116e41f05ed98. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPTK01800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661b6797d3bc7023c7a75510ecc12fe6725d805f41abc9cfa338e01f3d2df62b. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/JPE202001002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0f19f37ee038dc4626fae8bb6158b891b7c18c84336d00c108ac0e4fbbbed2. 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/JPE202001005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08c48e17f909da07e74c77a7ac1404707999b21f9f2f8fe1a3215951cb0f47b. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/JPN902003460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816455fdf364fbf2323ec26092a6df227ae50255607567a4e067da4efa6dc437. 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/JPN902102710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3747a0e934b80843f8aba2c333d7065decab4caca4a0f176a0e4c7c91b880a. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/JPN902102720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08569ca125eb888b4322a64babcff3c04343755f3c3cb3a6253e5756d329b21. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:32:53Z), 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/JPN902202000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5455f72db0396f56049e0fac525342e12dbcbf25edbaeb74f6ad7928f96b4bc2. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/JPN902202280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1595369342d1f645ebff591f81d4544c557905abc776864ab5e47d2161bfaa. 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/JPN902202300.