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 0xb94ba660d8b1ae16c11e1ed47371165900a753d552fed59d9fabd42295f56daa. 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/cb5b5c3d-fa63-42e3-b3e5-6a86a11d391c.json and https://artists.proofprofile.net/proofs/artist/cb5b5c3d-fa63-42e3-b3e5-6a86a11d391c.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 0x2a1fa940a2a5860dc32795508d36cfc20b6ee468118f97bf58534bd08f9b0251. 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/DEAX12000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b849966875a827e12fc7df236b81459b403bb9ee43c50d45bd6f92a3324ce48. 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/DEAX11900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf804e3d0664ad4f0743df78667c5bb45884311b1ea8e1c4a86026ba61de090bc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72300253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b02fe054e94f1aa14f9d9b703e6aec559c0c7a26cea9cc628a655e2979c748b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEYT72300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab4810f52650da673a3847e328cd9f2b7edd6eac534b09582dcf3101751970e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEYT72300234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6977f34e4ec405d9c334bb97da6c1c8192051e81679e988f4fa27ff72e649b8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEYT72300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996ffed9da50f0a8984944a1df17ffb20e245f6037c7704b0162f47f7362d42c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEYT72300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa405f88d02a4566df8e5c54950d71ef280006af5f5416692ba2a72c94606d927. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b23e99635895b9f5aed079c1eb2f6091875be457c6331d8f9d92721d13bb8a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEYT72200464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856ddc6d7e694c9bc235ff5627106cff51590a58207026c566d23476237c8ac8. 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/DEYT72200435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11524f9d848a1dc7706227ad3803c908e0da3358f1a44926073eefdb32810de2. 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/DEYT72200397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a0349d689d70f1d26e17294584ec252f1d230c7da34a697a356749ed09f022. 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/DEYT72200238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4f32eee910be48c14bdacd4db6ece224cf63b84699860af95ab5b1a1e25098. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72200199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a9b05ce1d706569e6e99c5d4d46a69f5d839c1ff78e143b13c55ef7df92b49. 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/DEYT72200184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadea83d761afded56353b35d4e2b1663b09b07d97d766e5daf404a8b943785d. 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/DEYT72100642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b24a7474f21304817a8c6e3858f41c6645b65a2cc2938287adc559f0e381ea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEYT72100571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c74127931c84d08f531f6e2e38347869fa188356c1e3ee39925a7f08a2c453b. 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/DEYT72100451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9fabb152fd51b1da503edffb28b13ac04982a2f5570e331bbd8b52f30cef2e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEYT72100427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c0a756d695f83355b817f94f55be0c55f3ff25f9af9038749d44316a5b4a22. 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/DEYT72100389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa000bd2adb5d9fb4140995206bd347f25b1a67daa2059a8a410134bfbce9db46. 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/DEYT72000262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed6334f01bf12a8587735257f07bb927b25d294b616b97da141e71d6b548c7a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEYT72000228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e3b12cc1c58292027094d52576563035fe34bbf702cb01adfcd9f266bacc57. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEYT72000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4ffaba1dd03cea29db076e2c9f9bd96cea4cc8643f973ad40e69eae3b355ca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEYT72000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76db38cadfbcab120c7756931e0bf8dac882ffd4cf79125e735b19671365afb. 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/DEAX12000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c70f9c06211be6800eebb88ce4898611275cc78bbb0d7bd7bcd849d547b68d. 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/DEAX11900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf070143018f2d4d68361e3c083b6ca275d5b7d1cc9c14ed25de6d7220ff5273. 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/DEAX11900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd661c1b959e90c7721e9ebf2b2392f96f5b1a8e081f9d30a07d02ba6beb2b61. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEAX11900050.