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 0x6c3b9731caf86492fd8f8bf9592a2536911538789f5a62a05a0dc661f838ad6b. 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/b2ea0a7b-ee4b-4a1f-85ba-d0939d1a3414.json and https://artists.proofprofile.net/proofs/artist/b2ea0a7b-ee4b-4a1f-85ba-d0939d1a3414.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 0xf8326a23c716e9e6f9dfcc8645ada90a127e26b6455ec74baf457324b7f30d0a. 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/JPTK08500650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa184dff07dc74bef6f22689171146542973ff5bf929f67b8f7130e6f711295a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPTK08500680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ed2f5385fe03f0fd3690068d6805e479830f65926e56d312861ac909dac72c. 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/JPTK08500720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e8e6e3d7860e2c4e258b0898b458daa8246ef12627c337c002b57b53a97fc0. 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/JPTK08500730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aaa1d794cd4d8a95c6eab48034f7217acb80cfe8ba2c10621962e58342e255a. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/JPTK08500750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f64ebbda655540cfe1b999c685f53b70bc2620f8551c2b9931fde626227331. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/JPTK08500760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5567f10e146c1818818b9cd8156bbe99fe9199480f6a4e8954818e190fe8f4f. 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/JPTK08500770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133a7d656e5ea17db766c8162b1aedc497e4fff94aaf5deca763f9b32d4aabd1. 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/JPTK08500800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc76197e31aca9f067272a8062979690800f380eb20d63a02c6d66b557f8cd2. 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/JPTK08500830.
CREAM SODA PRESENTS～BLACK CATS (2021 Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba3b43aa2c624604dc6ff7aac79937558dea93807b945e90167e8f424dcd79f. 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/JPVI08110720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061a375897614560f513bf61f66d62c87b22bd78c59ca83448fe3f2d978a0f9d. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPVI08110730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73e3dc124792e58b3ccb0b341d483a227851709db109b971fc29c19ad409198. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPVI08110750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943bab0d9eace5e6e9c9e8cb2cb54f5d87ee20d370ef19545e3f8d58e2827210. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPVI08110770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd558b108f5c76542ca37587ddaa4579bc0f3fc2c35e1d5a55b9b49bbfdcb9115. 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/JPVI08110780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17889a0ab2ace405c9c690a93ab9f57304c7acb3ddf00bede39c749fbe5f7ec. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:30:39Z), 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/JPVI08110810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c7aa3dc1a852c56095291f239d60bf6e74de4395f9edce7e29d8729a3f086d. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:19:20Z), 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/JPVI08110850.
CREAM SODA PRESENTS - BLACK CATS (2021 Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03b0e3197b7abc9dde2ecd467b37452931f92c293e8e0ebce0a5c4562645df0. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPVI08110740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efe48a1c64b4acc888db4f86f5fbd61b84f2d1904769d72a53dfc0bf3a4e520. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:56:57Z), 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/JPVI08210230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058d7c4030041235bfdf395f60e23291bde4ef48c131e03b32f8933735ba5536. 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/JPVI08210240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285310ded6faf1f59dbdff8a275617c59f157a4545d0f243f46b5790d7b378d4. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/JPVI08210250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad7e4154b785bc9e00419508371f4261d3a7a4b323f3e182d3e77ed5b32ca01. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPVI08210270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0f2b8940c335ef76ca625bfcb231191478d7da4f286fb937fd68435e45a047. 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/JPVI08210280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fdd0a7cffc738a9ffb6d27814f03640d302ea034197e09ecbd222aa51faf07. 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/JPVI08210290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc0d8f077db24a7aa78055473f3e11b4286054cbab018379c071f4fc59e01f1. 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/JPVI08210310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54311651f3e23ee5f08d18c88a58a67b51402438e34a9ff5e17539c6e8bde4a. 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/JPVI08210120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bf66bf1d3431c52a4ca486da230f05db07a3feaa60f83c48648abaf71fa796. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPVI08210130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bd4621bcb5a9eb7fbc06b23b9f6fec844f4ee756bb9f9eed1efc7a1267b5c0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPVI08210150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130818993a2d4eb6978aa43d125fc21e8371cf6eb2416e2998fd548563ee83d5. 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/JPVI08210160.
I・愛・哀 - waiting for you - (2021 Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c6c40c9f681ec5829c68b28230dafc14ffb9e01cb6e35c49cec418a1f69341. 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/JPVI08210170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8e8a6f5a4e9775ac903a787036b477400ed0129d63f2be79d256a53ab9a745. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:57:58Z), 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/JPVI08210180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8b011fb4bce88701379679b235bc07469e8207cfe9f8f66a03e5c86af541ad. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPVI08210200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fabb52d32c3dbd3dcb5f457bac25bfb61bed128a28650dcccab86d7b3a1aeef. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/JPVI08210210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9a3b38d5ca061719d09e138760c463afb32f9b9402bb040263ab2166170b76. 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/JPVI08210220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95648d998d4cca7507322e52b635516e325ba7cd89945487d877e20314282cc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:37:13Z), 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/JPTK08400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554ec9462329f824ce6756e2c30453e276cbfac18cb92434ced6b2a3e8e876e0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:20:36Z), 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/JPTK08400720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a707dccd85b2e2eea9ded128a548cd773c64e7d8440fd9c802643b636e596d. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/JPTK08400730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0004b09805338dcf8dbb9f6c7f4340ca7760fc10c72d799178a6287ce1a9ca9e. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPTK08400750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a17c135aa617c827d5ea7f3ef7e0b3fa75a5b9e7674a3431ad202e222226e7. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPTK08400770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da062c4dbfa8df849c72965199c3ee0f1a75283fad292038476cdce939d823b. 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/JPTK08400790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03b0e3197b7abc9dde2ecd467b37452931f92c293e8e0ebce0a5c4562645df0. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/JPVI08110740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fab1c1c6537d964d5206b5c8d48c30e7ea28fbdff5e9190734b6caf7c6f88a. 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/JPVI08214360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0489e69e4946e23418698628ab31e382a1408e195a2ffcb179dab6d7a879a6. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPVI08214350.