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 0x662843f0605e0afaf17abdd796768fe5de5034d60486207d1b742d8bfa22e5b8. 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/542353ae-485a-42ce-a096-e3ca6bffc627.json and https://artists.proofprofile.net/proofs/artist/542353ae-485a-42ce-a096-e3ca6bffc627.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 0x7a1b47151b86ccc74776d2e1ac1e3060d2d26b823f0040c7c45e56b7d72e9a3f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FRX201955409.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cf1fd7ca6604188d6c10e3c6cfe661b0f016b4f4ac71e6c709fabc87773dbb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR10S2034630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5199f516c9f00af3624199d1d7bfe30f45a945b634efde6784d22df39156ca79. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR96X2004809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab31e8e708b2d95373186d076da5b1c70185f324ddae293de238ed009503453. 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/FRX202046969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e07d8510355cdf2c77fd1aab69bb94b0d8e05f36e5adb60774b9e28ffc9912. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DGA072112916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4a57b98ee304c750933973b2d16866b5d4de852a841c58e068eff46645cfd2. 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/FRX872124649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f51d0a79057870c665ffafbf8c2a4d5fd79d4ec9c31baab4e0579f156264c9. 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/FR59R2230220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d3bf783fe07a2aa1533d73d5c26f49df3b85d2e718ca4d2b4df89800e7a00c. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/RUA1D2339648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15125a9ae8ea810e1c06201ab79dbf0fe7cf033fff1753df89a95ba5d0168844. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUA1D2372246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc386ddb92c268018e9dca4cc28d48f6a88bfd593eb4b54c94ed7cd9e48fe4f. 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/RUA1D2387903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1835a3525a7bcce6439786ad3e90f4f9caed8574e9daa3af2116e5f55ffc42ed. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/RUAGT2359551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2318cb3fc2bb8a5771564ae5dc65ffa5bddb324abc8b10e864486e84183dbaf9. 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/RUAGT2439262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d29dc5c16e64dc43bb62b3b33a54e33e1cd9f82057328435750ffd5d3e519b2. 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/RUAH62408524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1536d09493655c494f2e9caff5dd6d8164e3d523818204705e2035846427d0. 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/RUA1D2515380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5df3c0566ea2741b699c3baf81a071e05985356b3a2f4af2c414c6a557e655. 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/RUAGT2507879.