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 0xcbd72fb225172ce0786acaa54cc1c5cc5d466a5c61165d279559758898508dbb. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12e39f0c-f8aa-468e-9499-f218eb42ef5f.json and https://artists.proofprofile.net/proofs/artist/12e39f0c-f8aa-468e-9499-f218eb42ef5f.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 0xd4a51567a3c46a2759a9c07ec3ae733b3a1c300209cf8d91c928d79dd843da66. 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/GBKQU2487628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b22860ee5a91b0d6d2816fe28cdfc572e4bc01790746e1e57a4f185090202c. 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/GBKQU2487633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe718c2b6d227e0249640f1fba8ccaaf0d5103c725fdcfcba617a76cf98293a8b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZWV32435201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c2ab2c4614804f1a950687c1fcf16265235d90477f4c39287645d7c03094a6. 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/QZWV32435204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e1c679cdc309bd28eb2a6a2f49a6172a4a31cd9452118ca44097ccf7b0accc. 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/QZWV32435210.
Collective Sounds Various Artist Volume 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3cf14db6706f379ee28cd3f75c00bb4b0f53e116f7c688d7061e34f378be6c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMJG2421540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3944566c7416e969915c8f3a53beefc43099de2c87e5e1bc0e5d18a4672cc86f. 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/DEZN82369696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa915217bf7cc2ad234a106be40c25bd482f7c74b83238192135a2717237f9410. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEZN82369699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd67db7a6d83e236786a56e2cb6196ee897035ce789e1363b350620a26cad93. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLV62401212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1504e5a94e575bc39472e94347c119ed8087fa90f1e2382685056a53c55ecf1b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA5KR2501477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a88eb173bd437ee68c818704c38215fd0ba382fe8f875c5ffe0c44dc27bbde2. 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/CA5KR2501480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344ee79b6ea8de86e46cd8d9811a39312f859a7ab6719bfa49d9e86dbc9deb7e. 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/SE57V2409650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c68c796e2d3c2150a48515cbf12cd5cb42ac6d262d6ae42b784c42e744442a. 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/SE57V2409652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f52b9dc08bc1142c676955179ae6050dbbd4cc6a7f48f70c1c4d675129e8119. 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/SE57V2409653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e5fbf3bdd25f69bd8c6030b2c4608e0035736137ada15b60ba34f513f8e2dd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE57V2409654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bec88988c19c0e5e9ac4dc22dadac63422b01d2e0f0c938bb47701bb81a63c. 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/SE57V2409656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bb9b65a141959587dd2c128966fe8f46579d75939f317f9c0f2929627bf333. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE57V2409657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ed91807995feb52404418c169771606c958b56bc4956c4ad817d3f9910bc77. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE57V2409659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8423bb1450d2e6eeb7442763bc66df5f992a9f093390c7777b2d1cf6d27366. 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/SE57V2409660.