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 0xa67055aac6600e9d96028f75afd4e194fb28c675f7de256af986debe2348c3b3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c151c95c-dd82-4b9e-b146-2f4b0aa87d7c.json and https://artists.proofprofile.net/proofs/artist/c151c95c-dd82-4b9e-b146-2f4b0aa87d7c.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 0x22d1f1348ba835e575b348f67973e48125a6969e569a28f8fcce5361dfc55b41. 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/US3DF2454787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b41fcfd5e3ba67dac81e82cde916b6d91a4c8162d642293687897d43e17d06. 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/USANG2445361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69e5c87c7cbca2e45a7d25e5e2d2d3f75a4ba300ee240857ad2cda2781cce9e. 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/USANG2427019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb296619e412cf250f2ddddb648af48a0544d1fa1f7ee0bdb44cdd22684eadb55. 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/USANG2415520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5a3cc609b91b722d770bab1eeb78ba4c592a073bd445ce51fbb826d3cc27fd. 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/USANG2404821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5eaa4695302692d14b29c67cd9062847c60916ba59d13b5ef9dddc5724a87c. 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/CH7812411099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9916e3c550db274ff1184b7ca0ee6ac9a30448fe95a2abc4f269a7a7c1b14743. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:45:27Z), 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/US3DF2455461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63f3028b9ea58af21e98da0ab2c0e5ad29a50dd684c2d94d9179bebbabcb259. 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/US3DF2419064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58524704e9a28e6b137b8264f73cfb07914b9aebf1f4423aee25a5cf0d50e6b. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/US3DF2421799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4674cdde47459e4f0443583662c49c9d9da7afbf1e0bf4d1beee52d0d681dd1e. 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/US3DF2412712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f545dd243e664c9696ac95d1279e50c6b6466c4cdc41057cf7415ea2419c137. 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/QM3DF2485358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307f4ed84c6d3f725a41e0bd87e55f0c094b5f715a7d1c711d1a618d87eb2e4b. 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/QMANG2217491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0418245438dca5f94fe01cee39cbb8bf56942d465764db1abbb7e7d8d85673d. 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/US3DF2491269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3cde5640d7281c33110cf21c5ea5e05cec90d412339d008d890ce06ecc2b51. 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/FR8FB2323400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2ba7db7440ceab5a894c607dc306ae62e0e4623185cc4e2c83be26342d60ec. 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/SE6XX2311725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb44cd4cd01da7ec7219370b139128497b4d8fedf1087661064fdec80c84c405. 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/QMANG2228823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f32692244d8e241832795bcb2db1fba0d3c8debd0d929904ad2f04f3e0dff4f. 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/QM3DF2296084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13855d7d1960fe2083677254581d414d1e0f3d196a59fcd2e01c22d62af804e. 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/QM3DF2274202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4831a9dc5841903b71d6c27b6077aa8dd567a7cbda990179a56d23ba80dd5c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM3DF2282973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b66249fb888856d48e626ff5e23b9d9e3f5c58dd65d783d9315a58702b26ed. 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/FR8FB2315400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38296db8d7536e5915850ab5d9473656b1db681b9c85abd7083530cd84f9a077. 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/QM3DF2250850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420d32ae493f0d6497a220f1d1fd3e7a2f5c3d903ead7b0d26f054330b1d92a3. 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/QM3DF2224656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9660953705c9c3b5d546cfb7a775c988bbc3481f31d8e0625f29f4dd5f80f182. 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/QM3DF2214273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d64fad422e9f07aacfbb26935a8f46e0289b0c38bcb7ecb538199ef2f23f959. 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/USANG2210144.