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 0x1d4a7e7a2a0e22e5e9c0ad8c5b7ab38f19ed2272dadfcdc8e01a4084344be0b8. 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/c8f4c9cb-a38f-45c9-8a49-2ef015de1db3.json and https://artists.proofprofile.net/proofs/artist/c8f4c9cb-a38f-45c9-8a49-2ef015de1db3.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 0x0bf5a98c5d12f5cb3143d3bc12638b2be9a6f03f25e1e404955e8c79d094a017. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USTC30792963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b361dc3f5b0291a3ddbfc1bc7a953a8158bd08c98c4f2b3a1ef572b571bfb16. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US5ED1200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe912a96617f9b2087fcecd17d66cdd02b87e822186f16300f7b3985df0f65018. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US5ED1200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfb8e25fcafe95236d827858e113fbe56eba7e168ba2bcf78c614f15e5071a6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US5ED1200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4e59f4bf2f119605d4a24aba88ba4e604c3e6c31c2e27551bb65acce09110f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:05:05Z), 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/US5ED1200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41c4f0b9b1796b32defdff002c0d431355e05f78ce4823aad2c4b5b01511246. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:26:17Z), 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/US5ED1200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206262e0f789f0eb5c4f90a90d5035b29038ab817bbdd6ca198bf0dc356ec005. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US5ED1200118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707f6e57c329b4d9d29bd65e7491edffc99bbd829c0242093c5f09e7cc28ff65. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:33:19Z), 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/US5ED1200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030b55d70a5e6c956552d595d3fffbc86dcef98a3f148e60a0e0873d2f53b50d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCACA1431339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e369da3f8f15a6a20a929477ce6d0e3d854abfec5dc19aee43f9eafa5c86f8a. 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/TCACA1431329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111d29fbc5d66143549c64d4cc66acba07346e53c98f6961f4dad272096dc777. 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/TCACA1431331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0404666bfcd2291e1993d62ee6d5fd9f698cf004b590ea562196fda8fd82d97c. 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/TCACA1431332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dee29811ff87a0ff4ea0723afe4bb973b72bfabd928dc0c7ef8452d6f487b5. 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/TCACA1431333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a3d4fb4a228d9dbdcf04c8416d74c329ac2962630c083fcd7c2f3f5f575874. 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/TCACA1431334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030b55d70a5e6c956552d595d3fffbc86dcef98a3f148e60a0e0873d2f53b50d. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/TCACA1431339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc911b0e18aeedd1c5ffabeb61c388c9c43baf06714bfd02b1a6306a7ff3f3d53. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCACA1431340.
Que El Mundo Escuche (En Vivo) [feat. Freddy Rodriguez]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cde4e20e0a21a0e9ac566d61b61392cad9eba77d496816bdf3fbd3d896d9fb5. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TCACA1431342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c3ee6160d2da917c83326a957d1fb95ed33f5101a821bfa18f39212aa16c9c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDHM1707230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a89b0bffc9692620a06aa2a7c654aa6ced4f339fce7b5d6ee1022287703990. 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/USDHM1721781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6281470a98d5a60383b85c167db6742c18ce268ef990d6cbecd9e7b6c0f898. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDHM1721782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623fbbca52b04054beaf802a2228a2f7483c30ab6120c0368024406bdf0db8f9. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USDHM1721783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1870b1e4464f4a1496a34190ae157ebce1244a65e55588604e816a5b866362b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USDHM1721784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0732efc2cd022211ec143c7517b2ef3a2e854f58fda57f4eb10bf2ea24af33a0. 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/USDHM1721785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa937323091848c8c61c333f749ba720b47ec56f2e2f3706b18ebc2ca3d5ee614. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USDHM1721786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0228d29af010eb51ac233210d694c8588bc930a31c4aa0091ad513903a704155. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USDHM1721788.