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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ba5196cd4b299e787e66b623cea4354ecf708ace6b141c0d9b0f4ccb5e5f01. 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/7b19fa58-4572-4080-853d-fa5ae487c7ab.json and https://artists.proofprofile.net/proofs/artist/7b19fa58-4572-4080-853d-fa5ae487c7ab.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb684d379fdce0c5949a9f007abfda523d32494bf010b69e43625b439415e6ca. 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/USHM81548588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcebf37574adceaa1058ca924e84fcbed4e1e37794dda0c6545fa82fb271950. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM81548590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5b5af6df1b07d39ad5cca4668802fc1281bab0f2952f74903feebe1ddff5da. 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/USHM81548591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bf02e5541b251ce26cf9ad9b0abda233544612e4180221410f936f49d139c7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM81548592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f64eeabd7d9be9753dbda72122eef018c1e4e429f7a0a1f6492607a38a53b97. 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/USE831527478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f5073183e8632fa44453d4430fe632a21c0c1466098fdf403b44e8375ea019. 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/USE831527479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe019d5cff39d4ba68fdc182cdf0fce979ee6fd79f49943a0a3bae4a63a0e540a. 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/USE831553422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cadb90dab794f03f4793b31a66095ab328435be5a285033b63cd97172beaa5. 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/USE831553423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11072dfc3e54dfbffa28661d32b1200cd869e62c3f123a286176c58d277de6c0. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USE831553424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323308919cbae18091657fef7a9860808a3ebcf05e531e2305f6843d51435bd3. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USE831553425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5741d1f163d3830e3eae03ba9e82d21ae2ae4ad6b694ffbf65671f0fadf627b6. 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/USHM82180931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe197ff253e69c436c73191b051cca94b2d96fee8855c4cafed0b3a6b6831ee26. 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/USHM82180932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fb2539619135c881ce94ac15959e0d36ef265e3aa6545b0911ce98edfe1b64. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USHM82180933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6deb3c8887a25866e7925f3ffed75f574b92b41f02bb82634c8dbee88b8afcc2. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/USHM82180934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fac1c90d0975cea7eecdd7ce2ca6075bc6042c888b8e8733db022b3ba8f8c1c. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/USHM82180935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac1feeb2b2e2b7c66c47563e7892a541a2ad57c186fbd67728317175af81fda. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/USHM82180936.
Galactic Girl - Lab's Cloud Ambient Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfe45b8d8a64464a888eaa3b6913d120a5c3ca5dc3d364229ef849f6f279ef8. 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/CH6542179091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029747a886f0814af8fd764a575f5452f1932cbcb7f1b9b0a08b0b3cc10afb32. 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/CH6542179092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a076957218e00aaff62f56e47dac993ff8b5d8a551c68c664329d5a936d581d. 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/CH6542179093.
Celestial Medicine - Lab's Cloud Ambient Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a69197983950d93ece0a8e2a710bc456bb9f338f0e243a08f417036f8af3cf7. 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/CH6542179094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78425cbffcca3b573b7fe8ec1f4cea1ee7a13aaf94732566c8a20e23dba86046. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH6542179095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb933c1de2dec27aed3343a5fd19a3bbc13bb39c98a35f82882e9b6e75c5cd3a. 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/CH6542179096.
The Continuum - Lab's Cloud Ambient Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dd6f92b37014e82165b820f718d7a13ffcbc078ff1f42fc6d437e122ea67dd. 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/CH6542179097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1393098d82fa5f37b4b76dd4f1b3b3a9498c92ce97b426d715641dd05de329. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZPJ32182675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdf21049961af09a5487ccc776786491c28c9b6367e8344aa74585332075a8f. 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/QZPJ32182676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0a34bfcf399f444811cdad8e9d099f4b909a7f7b55e0043465b252461aaf49. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZPJ32182677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72d85596645c370c1b03e48168677475ec6222deb730c4694ac8b20487d8f78. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/USDY42368835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcaafacc9dc7fe6173698b78ba382139119970cba8bb6946ddb6043632484b6. 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/USCGJ2475859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9122b3cbcfff100f2481f1a7203e6930bdeeabdfb7ce6df3ce46f393b928589a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/USCGJ2475860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9560acb7e47c48febd538cb04c0999b9ae816bfcf6af6fbafde7e4171602e7c4. 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/USCGJ2475861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd016fd03c512df71d3a476a2cd88600af57d45b6deb6a8929879ec02e4fe666. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZTV32456795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238d7364a99a766abde7535078aea64dbdce7b928cedaf99bb9235af1683a0a8. 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/DEGA21750331.