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 0x1d643b4ca5e948e6a4cf62eaa825bb85c2d65ab8d90fe1c3bdc89de593b5b198. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09a1b4d8-d4e5-4e14-83c3-aff0a9079b2e.json and https://artists.proofprofile.net/proofs/artist/09a1b4d8-d4e5-4e14-83c3-aff0a9079b2e.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 0xa0c1b317136336a4772e6c43676cbbcf25bb4571ecf9686b7cb5a624a66d0e39. 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/DEY472178009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a919ce81a2c9f80ff69c495ef2c6ef487fee1677a7db10fbd778d8a3e9af2d. 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/GBLV62022322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9739b0c24343e59bcb74e371d6323ea536dce747fe07a81dc613db0733e202f. 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/GBLFP1911075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abd6ac9f7bff0f23d136edc6da7a19315ad4ef0b49d58cc39dc08a4c1fbb155. 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/GBKQU2244794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1893f808f3f6bb6bfc2e79f7ee8aaa167236e0d73a949815a7a5eff6e4b756. 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/GBLFP2082921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccb48d20f5dba39d36e44cd6b58e23d2dc25b4c6695d5b79720efe07a26dec0. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBLFP1900406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4ce31315003a7635f84bab4410daa3b1cf990c5044f0fb743115df32966971. 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/GBLFP1900407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fb9bbee081c5a7f6745296f71fa53ddb4aac749e2c3dbf38ab47f41cf1425a. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/GBLFP1900422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeabb11b2739cef28fef1b2a2f0bdf39d5774e12272f9f34f0b73113275679fe. 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/GBKQU2406363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b173c354e5ee6ae19ed6e9db84cf04785915245368bc51ed6ca8e31a232027a. 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/GBLFP1991729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae2d00d0f20b26bc0c249e5f8bfb3312f2632408c977223425879a45720655c. 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/GBLV62321541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4425fd9d36c945a1e25628e92f6ac82bac96657f676bd6b28889c1b3bf1ad129. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBLV62321543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988eb5888a66fe954df61ae04a249882a99bc1afed37e02d56dff4e605e62e74. 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/GBMA22006617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7725256ec6694850b61bb3aa60581cbce8c2fa74772418446d9b6fe29f58dffb. 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/GBMA22006619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bb1cb9d319a486391131512f6b41f4e312ebc32d1b17445924f9eab88cd561. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/GBMA22006615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4ce31315003a7635f84bab4410daa3b1cf990c5044f0fb743115df32966971. 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/GBLFP1900407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e025f014915de42e6a5f099a0b358f13559672284cebb3205e05ecd0d30d811. 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/GBMA22021245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1f6c6a8f1557527e59a9262cd3a15a838ea0848942dad315c92817de62ff5b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBKQU2244789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fb82a232b23b38de0598eebeb79a50c078acb76c31a2308c8a60df611c1a6e. 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/GBLFP1991725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b173c354e5ee6ae19ed6e9db84cf04785915245368bc51ed6ca8e31a232027a. 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/GBLFP1991729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15cd26e0181245f447ea240a6c7179149708f8e5099101abd4d513076a42155. 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/GBKQU2106564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d7b9c483ac0671a9cda1c2c31d9a8583623bf6fb71ef932209232d9b9d2300. 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/GBKQU2511851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389b2f68a3fa85f85d3022d2cf92480a4fcf0e77a622e8d32926bdac15f28e9d. 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/GBKQU2511018.