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 0x9f4499d8df57b3ade2b6e433e84d6e62f20c7131e61095aba2613c4359b2420e. 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/2c34dea8-431c-4951-bdd8-2b041499913a.json and https://artists.proofprofile.net/proofs/artist/2c34dea8-431c-4951-bdd8-2b041499913a.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 0x2321d8b6ef83aebd24f27f21a1cf17d33efca9d794ec9d1cecca94b6b2ba3179. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USA560868746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd879836c76e4714b9b810e7b5656e134d1801d0e996d8388db1b70729ee1099. 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/USA560868744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6658d28cd80b09a7b48c59bdb29e7e62fb22fff471fcd0b0d93cac7cb389cbc0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CZA751047502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6704d362a5a11b567140c4aa225959554bfd64429c5e326da20ed83af49520. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/CZG961200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c3b7884d1945601f336c27db2306bbbd875d19d483bc7efb6f88ab8e73ca65. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CZG961200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44cfa8bedd7afe7213689493ebcfd50c087f39cd60389f849b5399c3f273bd3. 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/CZG961200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f80297d7bf0c65839d37d0383db4508226256a016997bc3b87f20f018417310. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/CZG961200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc3b9e179db7b2616948db14e373b4bea284825b456e7077296e4dcb3672362. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/CZG961200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bed2da0d104997f3e911180899b27b828cdc6dca2f039b2a41d1725bf62ba0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CZG961200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed34ac707e2e71f2fc0c3d35fe4a0058b5f6d0776d1d90972841ac983783aa0f. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/CZG961200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e524d3ef108b700beb7880b434954c8f3bbd200e15e0c0da48dd397beb3bb0f. 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/CZG961200028.
Cherries on Air (Original Chuchel Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a63de4618a366954b930aca80a7995d3361a6abcfc8e81e6ed7c1bacede6b6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CZN732100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977d35e2794eb104d760fabdabc1ef78fc73d9f1b3dc9780144cf2cf1d40607f. 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/CZN732100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddfbfb8fcc6b05b9786997ab2a1acf54aa44b04767aad1a6a2aca6298f91bcf. 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/CZN732100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfde60bf5d25973ca2b4ced2e5fc1503fff8c4925cfe03af07f49d296d1658ef. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CZN732100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80825adab2d06c146a01e00980ef9b475a39d635ac20b1161dea8273beb12022. 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/CZN732100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7636e293dc4ab3055ba72b22db28d5056baee173c7109dbc5cd4f0e816330f7. 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/CZN732100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66bfbb1d3d21ed40d507faa4a8f5cbacd3ca6512d586b148d8979f676ddf6b3. 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/CZN732100062.
Attentat 1942 / Svoboda 1945: Liberation (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a810adbc722420bdcbf343f9c63616de5475be9443fbf2c656ce177f7488aa. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/CZA232400851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eea086647b23daf6dfd62f8377b0714635ee721fda72406753964de6bb4e964. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CZA232400866.