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 0x159d08114e07c7bd255a22435747fc3fe57efbd0ccc2b69fd23112b6e104ef7d. 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/c7b8def9-6a72-48c9-bfc1-77e53f3faa62.json and https://artists.proofprofile.net/proofs/artist/c7b8def9-6a72-48c9-bfc1-77e53f3faa62.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 0x365232416ca54b76b90252956f606931065a42e0de7e3f7574e35b7c11f63fd2. 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/USALZ9100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190baa7a76421326ddad3942fd6d8ec9bc321db1c9d70bfafa015c5a768eadef. 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/USALZ9100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910c26d50d7cb98df2a43417329967a24614ebc42c3f4c55ab6bf773f06a1d35. 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/USALZ9100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120f8478ba57ba7a21846d95b0d4ea16f5e64450c876f18116e7ac5120b1b956. 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/USALZ9000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37185f498dde064ed595a67f8914ce8ab5f4482ac754a034c627c09511000110. 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/USALZ8900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e4151c7d1148c6198373ce348dd14caeb20577f7df70af6bda87eb3ae6bd3f. 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/MXF019201022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf73aa51edffdbcb17f83d72c98ae5e40d67362ba1fff8884eedc7ed2027eb7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/MXUM71803199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf73aa51edffdbcb17f83d72c98ae5e40d67362ba1fff8884eedc7ed2027eb7. 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/MXUM71803199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d8580a75434efd3949c3cab351c734005c89f09f956c408bd2c662b63bf012. 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/MXF152301650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d8580a75434efd3949c3cab351c734005c89f09f956c408bd2c662b63bf012. 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/MXF152301650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cfd0b6317adfb6b055903b1653d25128d4bc13ef53be20562a10050b02888d. 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/QMBZ91710183.
Tesoros de Colección - Los Maravillosos Duetos Que Siempre Recordaremos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb47d34aac2e79fce5f186905a63a8a844e8f4dfe2aa89e8495d0040bbd2657. 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/MXF010100499.
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Tiene Espinas El Rosal (Marraneo Time T2) [Acústico En Vivo 2024]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25962ba80f98ad17555c0a6a855d03f19d4dbc1174a49e24127d118c87c9c7e7. 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/MXD782302147.
Carita Chorreada (Marraneo Time T2) - Acústico En Vivo 2024
Carita Chorreada (Marraneo Time T2) [Acústico En Vivo 2024]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6574c665987c9b269091a471fd3be1da4a795278830223d180de2cc80ddc13d. 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/MXD782302148.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e4d13181b4c5685d498a6a9470f2893fc360a15d4b5368c0eb563e087c1ccd. 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/MXF012000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd8c67c4fe5df32292ba95d6f75b9f9fc11012d7d363b868fe2397e1e21d69e. 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/MXF019200440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d8580a75434efd3949c3cab351c734005c89f09f956c408bd2c662b63bf012. 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/MXF152301650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7e8e0efa3adb04e166fe4f967ea808c14de85f984a9a807a9902c3af355b8b. 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/USA2P2003868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf55410faf565d290fc9482f7488de4801f39da2daca7e958db78b759724e239. 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/USWL12300760.
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