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 0x1410e041696d624167b63e80e4c84e33dd169f25c07843906d6457cdc113b063. 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/1af7c0c0-986b-4288-b7fd-ff4bc4532c0a.json and https://artists.proofprofile.net/proofs/artist/1af7c0c0-986b-4288-b7fd-ff4bc4532c0a.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 0x70eaac1aefdc3439abbec19bfcf58442a5bef0fc67cca58d2db543cbfe862b81. 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/ARF060800887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacd74116991b76ddd09f1b63fffb535e87c9eb978854026bedb2c26f801b805. 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/ARF060800888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2710b2ea4eb9ca904ef417c10d2bb81ef806795fcfece9c540f42e832fb2dea0. 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/ARF060800889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a4432862cc19241b68eb2f846c45edd0036169e3708e231b54743b684c3911. 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/ARF060800891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ec448e9cda2eb35369f9a24e53af4ba425e332a63b8af9754100eae2cd47ac. 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/ARF060800892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059b27e4b4a9cb3ca777d65659164b8d8dfd3d4c2099dc759b026da0f464444e. 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/ARF060800893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457af32589ad69bef20807b1bc7893ef7876fdc16d1dda66e9c611ead14acead. 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/ARF060800894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4271e56098054aae1b58e587a9d954444dd6612712579f351247b61e086088. 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/ARF060800895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26d2cd8625387eeaa27bfde9b85aa1cc3a9a48db2d40e5aef55fee1efde3330. 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/ARF060800896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99744b129512d7cbfd27f8b0e8e1289df3eea07de5010cc28ce8ca116fdbf94c. 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/ARF060800897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf892f62ecaa733665436fd2e2d44d0a7148c79d7e916ab93ff246a9990687aa2. 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/ARF060800902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e2c15e0b16907cf46e26c80b663718618054c8028b5f1c817fc4946abd47ef. 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/ARF060800903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8bf337b95318bfd05e1a6f14711213b24ae6a5308be52c5e3d8910c81c8b5d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ARF060800904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4498a05b0c610c6fe02346d84278c1bcffc441f90c933ffed58ebcb085f4f3. 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/ARF062000373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf24116ab94867ae53315fb5d23fd31b1c67f8a0d44195c116d25477085e6523. 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/ARG991035584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7fcbdafb180f2287f8b36eda7d46fbb5955ee4792a92f27317d46b5831d49c. 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/ARG991035585.
Descalza en la Arena / al Son de Siete Lunas - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdc04e30676dc546ec50a20f932e6cead2abde0ce69c9c4c5a97712ea4f6b89. 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/ARG991035590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86e464b75fafdde381f89827d5cf81200b525bf98c76efd790bec0179b89670. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG991032377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3121466dbf555926deabc321ff776e2fb32bc528eebaa27a69bbec1eb9803f44. 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/ARG991032378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97de95ae8cd93e950b7b779d96b92b910ef0ef0f599bc93e0ddebf039dd2a9ef. 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/ARG991032380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76286c1a939a2d9d1d985cae46d35351549fa08702968ed9167df8eb12cd0b4. 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/ARG991032383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad21512eabc183ecc4f2c82ff3dd8602b74442fcec15b4c2da6f2bc6a08a13d. 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/ARG991032384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41020a53e9866e997a2d07d1c5d925730a76f550d3fc84e52928604e61fd6fcc. 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/ARG991032386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3921b50d0ae85dfebd2344b98b9f9a1aae74da8da8723cd2dd81a2ea11cd3d0f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARG991031854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43783066d6577035f1bf08f13c3d5fccef08b9d6a3bc73b86625b91005849018. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARG991031855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fcfd05b61b7defa49a5b7e3623eccc90bfdb2b9573630537413545c621bc95. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARG991031856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe874aed92955ad1a986064da5f1eb2923d55b85238839963a660cc730575979a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG991031857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cd30c245fe396002e663d6e7874776922a5101421e8f94baa49897d6ba5977. 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/ARG991031858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b48058f3a18ad675884db98cf807beb1fcbbb5b4c7a8a840310d2349ff9d35. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARG991031859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc0b256b5cdd12c4f12d67d13682373967dc6d306ed2705566215a593ae414f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARG991031860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25d33c857715a7388516cc94a5df896c264f16a9ef27a2378bc3cef6272f99a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG991031861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70e9e76f989d3ad8c29012ec9b24d5dd61f80791131bbfa8aadc4e75034914e. 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/ARG991031862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34f024af1c19ef98729344b9da1c3373adc17fd02359323233c6ffd845c35a0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG991031863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c2ff89a6dc9c43d49f23c1c2a9a4d2037b652c4e98aad31650010e87b4665a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ARG991044091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15c5db5e6b479a3df23984ccd8fcaf6886beeefb2a9f01131fe079d9926ae97. 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/ARG991035000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4149d4f463d2c543833e03e8b64ba0ef5b3eafd0cf1c47623e9cd98a2a1c80. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ARG991034995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ea7f8da296870b52dd37e790dfd3215f85ebb234fd9d8d119cc91eb6809d96. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARG991034993.
Pideme la Luna / Los Recuerdos / Corazon Espinado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1445037a5edbbde24dede8e478ef2141ac1f6a6d13abae38da1f9ea9db297f. 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/ARG991026165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f38f9f62ab58becd1b0da855c05126109b2bf493ea7b72d19e01094fa5aaecc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARG991025405.