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 0x5162150c38cdb0c27c1bf1008045f8c34f62f58bfd2c57aea8fcd9e9b600bed5. 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/b0790125-9f7d-4f16-98f0-04e99c37abfb.json and https://artists.proofprofile.net/proofs/artist/b0790125-9f7d-4f16-98f0-04e99c37abfb.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 0x7fd475a202fcce6b683848f9f8d9c311d38a460114445c86e0ccba305e97cda2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCACH1551789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5e0b9f85d44585580822e581c85b4e3d2051763e4d799770b3d8bce6a9f8a5. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCACH1551790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44732e9f619d99996f0fa7294fefe9946edf51019086ad847659e9b25e73ae4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCACH1551791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0763d7b30051016561e13ccb64816f7e23dd989dfd48da149d9f75324b0028. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCACH1551792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4acf6c0ed40480b4bdb7a1f69357f33d5f7346a7ac06414d59293cbdf5bffa. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCACH1551793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53f602c74b2fd942a7d092340087624cbe4bf3966bd30534e2d230ef57f26c5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCACH1551797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa285e58a5a20c92a3bc2ce208555a84ecb08e4cc47f58bd98e0023866b71c7. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCACH1552433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a9afa19f4edda8b9900eabd03c909d4269f5c6fd5a8381990e52632665de78. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCACH1552435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8b419afbfec070b54c0e04f332c43e10ac3066b74861b2c48abdea2fe8be0f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAEZ2000804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8365d2b3543713c1c8d814adddd38800eacd8ddd90c03a49c6ba09171b19e18. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TCAEZ2001734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f0c2ce3a391ee381e2fac86185ac7594661ff3c69335f65118c69e5069145d. 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/TCAEZ2000809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba1e0e099d30441d11c86899c7aba33064894e7a2f1cc0b2349307d5db0eeca. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/TCAEZ2000812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c84c14896f498caa7cd8ecfbaa09f9654c04454945563a0a3be1977c80d3caf. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/TCAEZ2000814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019455b5f612f16bb77504046465d697410fce2d421011208455f3a1091831af. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAEZ2000819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cc32fb58f18c1df20db9635489320660a30e2ce012e6797d6e724c7eb1fc9d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAEZ2000820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3fc8623d9251680cdd20c61612a61e7b14f36adf995c3e9f7e982ee200b584. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAEZ2001687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5fdd0b859de304e70a0c939278f25daa3a5018c12baf9885bf6616c4dd6212. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/TCAEZ2000831.
Oso Empoderado (Gustavo Lobo & Nilat Aviles Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26cb184933e12990fbacab0cad66394507f3217b452349022afb9379f4df1bd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIS2424831.