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 0x8a4912a83473e2ea3ed24ab0fcccdcc259b4a7859678c378b2ee846ef6ac8cea. 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/eeb19da2-ceb3-4e13-b5d0-b05cdb918368.json and https://artists.proofprofile.net/proofs/artist/eeb19da2-ceb3-4e13-b5d0-b05cdb918368.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 0xeb424dd61a546cb73bdff77dbc1c7a78f4ec6f8c35f52e9307a148655a668891. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:33:32Z), 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/US7VG2260356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c714d652d9b1cd57b04632b932152f20c07fd28c29dd1894e1de936a6b700ba. 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/US7VG2260358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432f0d54d1a6ac85fced95b246c7b7c319657aed5464830bfefe1fa10f9efcec. 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/QZNJX2107009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8099024c62b950cc3954b67706641d3a4864f6aa24cd0b78c0f7a6b702ca8833. 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/QZNJX2107376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb08d722244a542aa3460a97030a26b10abf64cb04cc1daa58181c19cab99af. 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/QZNWR2103754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec585889c0e54bd36379e874cca646019b47abab05c9b5fcff761c090d451d69. 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/QZNWR2103756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e920685fb1c6c0b625d41535947af9d1afee4737c2f452f894017d7b144fd4. 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/QZNWR2100756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31d576a0cd4b5d104773118257135a753e320380875a4544c0da5c8c6d79349. 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/QZNWR2100759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1111e7a06342c9a320af93a15ef16dba82dd5e277c3ce0a65eb4c0f85916ea18. 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/QZNWR2100761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c54480e712ef02cae866126fe8f094c4cdd307459bb636cf65b2a3dc23d69e. 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/QZNWQ2166067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d0f463ca5104a87df05befa3d4777513ceede1151bf8f4a88e2ad7bd436c55. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZNWQ2166069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd8b056110aa7653d44884027b7b008ca57d7efd5fe5324e1c380ec4b0a12e5. 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/QZNWQ2166071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2d474049fd504d31a9f8d68cde10e236849b0e3e26e7039f3c8eaaf9291951. 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/QZNWQ2166074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a939bb12de47ba3aef7278830c8606ca1843315dceb94afc60751117ad144f. 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/USHM21831612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8aa4c73077942a4ac0b300ed00d19b9c19bc8a053f405ff68ca024cc9a75c54. 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/QZNJX2152948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6af2a1e702c10d8ec0beab1be754f87b774e19c569d7be3da865b2dd73234c. 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/QZNJX2157019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95ea2c67844084a2c24c8f808b700409a1a3689fbe2539a49159603a3262694. 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/QZNJX2131842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83c70475427b17a361d146f2c8879daba64b58fa8fb0bbc8f43f0e309a8d70f. 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/QZNJX2131843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db86d8a89059303d5bf2b0493699b17621b867e38da4391a6ff6c6be14936f0. 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/QZNJX2131852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54844fc443b633e846ad427b8c80d9f62219be2dee7d13de713f1dca5553a1d7. 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/QZNJX2107204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb196a8f2bdebd9db1d6f9e9743712fc1b7896e132fa670ccb5efa97cf7802318. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZNJX2107206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d24e66b1768f15ce065fcadcc630d5824c5b88ae846e01ce3e18d994c1c3944. 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/QZNJX2107208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faa1922152df9c1d765b53e48dfe31d2cbb8f4ab929c8e698b091e9e1c58da2. 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/QZNJX2107209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8333828f9cc418f75e9bf73b010bbfe8b146d9d2bc2531b166ed0210e1546601. 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/QZNJX2112956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f0d62041c8baf761862b30e4bca73df5eb6eb6e9c8a190c0b0c57c84fbaac1. 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/QZNJX2112968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a34649efb7368685c0f06b4b6a4c304b450daaf10571d3ecebc0ae74664dd37. 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/QZNWR2116636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753608f7b15502983740bb3246ad6f9209f1072f53a0a879c0f3e9b861538bab. 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/QZNWR2116637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afead9ed70198197bc99c5707e1510e8a878ce4bd18c49dc56dbd2f3e0a236b. 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/QZTPX2282880.
Hasta el Ultimo Minuto (HASTA LA MUERTE REMIX)