La Trinidad could be: La Trinidad, Benguet, a municipality in the Philippines La Trinidad, Buenos Aires, a settlement in General Arenales Partido in Argentina La Trinidad, Estelí, a municipality in t
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 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 0x86894a61f25a7de4b76a41ba49079016dab9773426009fbc3bc83f6bd4bf880a. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89fc8a67-643a-4b5f-b825-0e1363a4ba35.json and https://artists.proofprofile.net/proofs/artist/89fc8a67-643a-4b5f-b825-0e1363a4ba35.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 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 0x8a81e866c71357379d012d0adae4cf2c3698f6f0b0639396df15294531047458. 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/ES5702300149.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdb78e71ce7689ad4eb456d4c7bffc09d2988aaf44690ea8007ffe3dc2e5b6d. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/ES5702300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c86a9988c4712d1e2e1e89afb25031994c3318c4b4de0a80b30f74113cbe7fe. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ES5702300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25da619209cd6e69ba46c55fd29d357f80e61cf27936cb6187da60be95242ba. 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/ES5702300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e5e240e8f8dc7632a75b6534f7e76c404e42a5bf3817c2762b777ad54781fe. 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/ES5702300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf78e74b23524776e34c281c31acf3493293c9f4f20cc1efbeedb3b3912337aa. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ES5702300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551c2c6b6e6aa87ff8feeec0f872727f4fed1a8fe3256d89eacb16ab52e08b9d. 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/ES5702300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87e0fd36338e73c9c03af3c844d8dc90194c548f36d9d78547158686e57ec75. 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/ES5702300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e736a898cc71b1dd06cfe1a6f474ece3240bab9a7585e2f6b5d0daba076bab3. 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/ES5702300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb51079d01ca856c9ef0e20d5aa13533a3546516e382afbfcafd3a25bcee951. 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/ES5702300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc060cb49a69b718034537cf08a096abd5010a94a48a64d27de8accbb19f0ec20. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/ES09S2600316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f44fc5cb81b8970b4c5587ce21a922251df53a6eaf0adf5a9ab4e2f9c206d90. 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/ES09S2000196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa176a0e5876028b6c12ea265546f6dd7ffc57b3df4d54efd8b0399047f51e758. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ES09S2700317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0f24aef527beca35788897aa61718507d834f6821826d6714d75887237eaef. 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/ES09S2000232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1b144d7c86f9c1c67de57168104c4f1edd3333ecbc5ac8f21c10066adec9e8. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ES09S2800318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f31416086d0649a40b8110bd0d9d852b39e9eae3b70f48540ea6067d7a191e8. 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/ES09S2900319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63613b0e1a846c793d10d75ea4ea8612b59f0106a81f7df43344ff1480c2a3e. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ES09S3000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162153d8665d9954f2a91ee5a904ee968513a30852fe8991c7cb2b2cd2919cc4. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ES09S3100321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5616ac67d6bb437ca261c6d25adc050172a73cc5d6913f7f5ed584d3735365f5. 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/ES09S3200322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403c69e87cef185ac03e78a4b6fce059155a8ca31458abe4162c5941226e3c76. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ES09S2000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e736a898cc71b1dd06cfe1a6f474ece3240bab9a7585e2f6b5d0daba076bab3. 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/ES5702300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25da619209cd6e69ba46c55fd29d357f80e61cf27936cb6187da60be95242ba. 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/ES5702300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fbafde5f948aa3b756f445bc82aa7858cdfd8b561f7046738b9bf2e51e47d4. 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/ES09S2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3eeb6d6760ff23d5b9e1da04ec516b2ac06a02401240cfd7719135017556f88. 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/ES09S2200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e3b3f7b1d1eba746033d513a3e80d1c2d611e2dbe45b794284e54239de6cd5. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ES09S2200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fbafde5f948aa3b756f445bc82aa7858cdfd8b561f7046738b9bf2e51e47d4. 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/ES09S2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403c69e87cef185ac03e78a4b6fce059155a8ca31458abe4162c5941226e3c76. 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/ES09S2000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f57c7ce29eb4d5c80e9342d06819b2dcf36933bda041babe194db499cb6a6a. 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/QM6N21907802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891ee7482d899afbbd1c48094db252668d39145f6f0a9eb70c9a71fb20aa2070. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QM6N21907803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe59f8c6ec384db8bed589fcfbbee57c9ed7318d92c56055ff7c82b9bc837525. 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/QM6N21907804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe59f8c6ec384db8bed589fcfbbee57c9ed7318d92c56055ff7c82b9bc837525. 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/QM6N21907804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567097c001c95e029456e2d4ac5d86bd614744d061aab14f6306c8a8c3bddd8d. 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/TCADR1820126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b371d101d848ff5c14093672380d17c055f24c64c7a2c2f254b965935a015a. 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/TCADR1820127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a77453a5fb2d95c4d25a1a33b444d73b0624817cd1e2aac54035d6c6dc6e0eb. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCADR1820128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd4c2a3efee9ec085c120558f5a156fe1c4b7971975026cd73f7a4a79822d00. 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/TCADR1820130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab023bbc80f990fde1979046a663efba231f61ac055010859825d94448aa63be. 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/TCADR1820131.