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 0xe46eaeda6401d1007e0ee4d29d2a07964208fd1e9f076124b9e24a46173d9ed1. 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/bda7f2f8-6985-4255-a978-bfa5ea379c05.json and https://artists.proofprofile.net/proofs/artist/bda7f2f8-6985-4255-a978-bfa5ea379c05.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 0x868f7187589216428daca3d6167f8dc46d87ae8ce0cd435bf22edcfa9d78b696. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/MXF061100448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908b2be1049ebfc05affea2b2389b861846e4c3efe9370ae05ce63dcfc91ec8a. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ES71G1619314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13030e4e6212337ecb8c83a306e00ea0429dac699ca369e4a7c0f553aeeb8544. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES71G1619318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aafccf28b915e5e05232c0e665014b05dcb6a0dfef4eaa830a5538cdbf4bffd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:44:04Z), 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/ES71G1619319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5666dd2c4ef0e8ca3e27759b225492d7589e44e2574f14018ff19ebd965da0e1. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ES71G1619320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f41b87779242d1d3f18fed0772ea1ea15c75ade8ef0f20e8dddcaf47208cbdf. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:49:02Z), 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/ES71G1619311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c3fc80e0eb0cbb5ae8cbce45834a56cdeed69f558df0f0134bf4205470a6f2. 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/ES71G1619312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5accaf0f7ede8aec7d92aac875a5dabfb904fb4d9e12aac44bf3c52292c10c2f. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:21:16Z), 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/ES71G1619313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a821bb62d8d91e5795f442a2a152e0a9f8260b437bcdbbedecf72c3cd33f978. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:30:16Z), 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/ES71G1619315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656d4478bf68f44615f0a8722babf5bace9dad102db1d35a56012471e9bdd2bf. 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/QZGLM1902571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3b32aef62efef7ac4ec816874575c922bfbf2197b71013e483c5e352923f14. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHZ31994415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbda479a12a973c26fbcfa3d3deb9db8ad66dab1ce46645b318a58857b68e04d. 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/QZHZ32018389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853201559b7ec52006962e6651b6769d362813447aa1d2222895fc756ae6d08c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:34:11Z), 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/QZHZ32066373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1247b2dadfbb99ad183414935043c9c56220f17529a799c436a49715860cb849. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:40:40Z), 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/QZHZ32066374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c32b315651e70ac6222bac8ea68b74f274a72285871fcf25b1d046fdab1740. 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/ES28A1010221.
Nos Vamos Juntos - Un Tributo A Las Canciones De Caifanes Y Jaguares
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abfe7a2165a6e57362f4a86d5ebf107c59edbe5d44a551daf51f56d80b8bfbd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/MXF061100305.
Nos Vamos Juntos - Un Tributo A Las Canciones De Caifanes y Jaguares Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abfe7a2165a6e57362f4a86d5ebf107c59edbe5d44a551daf51f56d80b8bfbd. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/MXF061100305.