Santamarina is a surname. Notable people with the surname include: Ángel Santamarina, Argentine fencer Eduardo Santamarina (born 1968), Mexican actor Enrique Santamarina (1870–1937), Argentine politi
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 0xd2d34a650339231d22e966fb869da175a1359c3c0aff49b48d731b5e5ce00d62. 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/f6a71d39-18a6-4f05-a5d1-02685afa1400.json and https://artists.proofprofile.net/proofs/artist/f6a71d39-18a6-4f05-a5d1-02685afa1400.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 0xcb5cd15ecf265df2a9c3577953d41bb4bedf1e223dbd0b41017769b5acce0a59. 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/ARG991029335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c5e12e88bfa22e2022712f3a1e5ec07bd3ab6aeff8d1da2f86fa590ca4218c. 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/ARG991029336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a037a052372344a534777b67bdf95a31cd6a426215fa3509f42e45b4729595. 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/ARG991029338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b581c05d8711ecfb91bfb5ce36e7b3387551c3d45ce1eea1202852960c36688. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ARG991029333.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6b91da8bd8b1f068c0a2567861165d833f767b0c7047564515a5dca37a4d25. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ARG991029334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d724232f1524330300c7fe6eddf103ed47699e53a4659eb242eefaaeacd0430. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ARG991029337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8a87339f783096b815b0ab4f6eefa5223c212d6a179a6154d090e26c169f31. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ARG991029339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b99bef50e46dd0b272a363c126241ab377006ce27f77248a102f560e67e519d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ARF109400318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf987ce6d0d03ea1a4578bc0bdd4596ca6d87ebf82d09f1fb238e7bfc034275. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:27:59Z), 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/AFR109400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e9a8aef2eb49882a0fef1c4768ff62849d6687f20a44d344356c9191408cca. 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/ARF109400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfda04f1c4ff13e8cff46fc7b5a4d574c799556e30a08c8f912c44454c3527a. 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/ARF109400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1030cd55760d6b7b94bd783989afe5daa86638fc42fbee9cd9f98b20dcaf52. 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/ARF109400337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c55c1b5b325cb8958583c953344d1f541ebc0636027637aa3f63da7b784974b. 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/ARF109400338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf293b54bd91b04d5bb4664e2f06f096ad97de4a74ed4db13530b1d90ac590521. 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/ARF109400339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394d212b81d6e65a74340c575e029783e9d448785e89e39bb90e9ae486e47076. 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/ARF109400340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7c2359bab51cd748383cca51e70fb071d403b82ca49848a99e8d26656e51f6. 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/ARF109400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb335645014b6a0a4b1727c50c378eb1231376c745bc424c9aac972674b8cfe20. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/ARF109400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bffd9002093e6914327a5afe59ad2724d031eb18a0aa386481403784e8b210. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/ARF109400333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860a24cc0d08a7f1c83fdbef03b75cc0d7ad9fe91f09e9a47176a461fbf9af34. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ARF109400334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb49b8682391d24faee34eb991817fafd3d4ac72215d930238801f5e9447120. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/ARF109400335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1757a084d2c73b2f5733eaba19d93dd0789a0a290586373702392e58e65b9c. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/ARF109400341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c99ed76bbf46664990f2bcf0c018bca94309a39c41551ac62165f7414f77f78. 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/ARF100200356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8769a0c6214f4e1f4ea67985d15f57406f329544215cd14622ecf1d882987220. 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/ARF109300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50900ca2e1e800044627d5e5e342c41554e59c1a74e238a650f70192044779e. 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/ARF109400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54abacdc4652fd0a8065d5808212532a3412416845da9ee13074f96f51f4c18. 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/ARF109300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5c641fe0c26b04509480809b343801a638e7cf8c37bee82ef99a4d8bf1ea6e. 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/ARF109300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2f3b6cdfb5138d9a8c142f8a9a83325d9d6b4c81a16133b8106e21fba44875. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ARF109300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef9d94e460bfb883b7d90b58c8283c805a4afd075d5588dabe49e64d985bdcb. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ARF109300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a3f70cd6012a7a207b5209ab52915710eefc65b5e53567d0496e8daa244ae0. 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/ARF108500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95270c40249a0344b206f187cc8654eeb202e31157e4ebc5fe14594cb276ea7c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ARF109500286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fe83c1a6783994b8b087f0576603bdc2aebb9748133fe10f73dfeb02c4f1ab. 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/ARF108400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdf05e60b40a9f0a90948a83d595f3f38d048fcfabd9362d99b863c0880ed44. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ARF108400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3383b9de97f73bdf557c3de276dfb97fe8c92268bc7cc59cb8b4701b470c1f3. 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/ARTOU2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0ef217704ecc54c9ab80ad366d1ffc8611dcd5145b6122676165f252a3a992. 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/ARTOU2200001.