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 0x613bcff7507691ff1721cc29a496796e7321aa565f7ba12f9aa882bb63010af5. 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/9d1b445f-285c-47c6-8d42-5a309f22ca2c.json and https://artists.proofprofile.net/proofs/artist/9d1b445f-285c-47c6-8d42-5a309f22ca2c.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 0xb9f73d7ccf1b210b2715a75d12f9c46192fffe09f12d045051b8acab89c6df16. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:10:59Z), 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/USA560643385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9182d5019d7adbf8da4f8b3aba209b6beab8f4723518667e91ea13e480e7f6b0. 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/USA560643386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee20eb3b677fc04bd4d67ae3213d164d72542d46ba5b11b477acd6522ad9803b. 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/JPSR09815204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee20eb3b677fc04bd4d67ae3213d164d72542d46ba5b11b477acd6522ad9803b. 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/JPSR09815204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaccde250b4d9ecf846b58a78fd015434cb732e47cceecc47dd6a74de6f4148c. 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/JPN200500441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55af04a2566c73626e05f8c72d00220cb6dd60802ad4b43b5fcfb85d58c8600. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPSR09073239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f28cba3161c0c2fd0cc9a378f026d2e43682f67e721b0040dc67adb2180591. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPN200600821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a9aef4b85d6768adae6597f423d944087314e88f00e516e1c54752368eeecc. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/JPN200600823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90648413387253e1050d3bfc4e76cc11d80bf8c72bb7f1a9d747ea3fb7e7de61. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPN200600849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c7f5c9a048fcdd4ba59f3e22b8719d0bd7715c0992ea25bacb47f8fd02e26a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:08:25Z), 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/USHM21440819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0f57dc71862eff90ebc78e047e96bb922cc6dcbf0e549632e39e09091e92bc. 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/USHM21440820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae33ce071bc9a36d42e7531540d40423ada95d3db3f5768eae15f9f095ce71b4. 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/USHM21440824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ab377984eb5487e7b7797308b82026cacb9b8461d9be24812e2a674dea6563. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:22:05Z), 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/USHM21440828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fe4d994fa3f0829f4150ed743fcaf4b0030bc1884cf003949ebec17274f417. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:51:07Z), 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/USHM21440830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a0bfb3d0b4d065837be65f417516a4e318ab371734a9f435ed31c9dfa3f670. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:07:14Z), 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/USCGH1516789.
The Heartbeat Laboratories "Alatane" Vol. 1
The Heartbeat Laboratories "Alatane" Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305ead7dae70805dfb4261bf5f9e3b8eaa40a0096a34906c99c3dc6d5608046a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA2P2126285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d625b47910fbbbba75113f3eaf7f43f0f71e6eafb44b2a9ef8203ded602275. 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/USA2P2126282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f39e070d19aa73a0403cdea52f1a3c98b21308631b5a85a9776aaabbc389aa. 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/USA2P2130717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3380582c406ac5a575308f481407647a3656e93f6fb9425cfeba3c6d365168ac. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USA2P2134945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c808649bfbedf914840dd2bbdac36fef19fef05f563869bf32362e267c0adf. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:58:36Z), 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/TCJPR2235343.
SHOSO (Live at Asakusa Public Hall, Tokyo, 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef30aad3570afc16d6d5a19f2a7fb29c7808a4d6fa7f6996c45ae73678a1c750. 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/USA2P2128965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d625b47910fbbbba75113f3eaf7f43f0f71e6eafb44b2a9ef8203ded602275. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P2126282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e385a51561f6741ab32aca066500a5a72b47c915977c43de82aa3876a7bfb3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2120121.
Martial Arts Trilogy: Crouching Tiger, Hidden Dragon, The Banquet & Hero (Music from the Soundtracks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b995aae95975da5f978bd3906b345684fdef8ce636d9bb9c9374ae87a227b6e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USSM10212801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f6cb274c621f07af931b4a689c08ba37d7510384bbd9f5ec6f012211f57063. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USSM10212812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bcefcdadeb02e434c5842e7f67773ab5a127e6a1eca35830e98ff23c14c7b6. 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/USSM10212811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5037c7e30b0511e87e6624340fe0cb8f83695d5f2374a60244228f886db80fd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPPO01702695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5037c7e30b0511e87e6624340fe0cb8f83695d5f2374a60244228f886db80fd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPPO01702695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5923a00eb3c1d0c091ddf7d3a21cc0be8f88c5e7208e26c9743b10dc81c766db. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USA2P2130712.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch