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 0xbe79b777d1649d20bd77fb2ab1294c01a077c6916c17489d4108f24e269a7afa. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e954bbe0-c883-470c-b46b-9a7d4f8fc84c.json and https://artists.proofprofile.net/proofs/artist/e954bbe0-c883-470c-b46b-9a7d4f8fc84c.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 0x579f6b549b949a2024646dd26734ecc736014bd16ff259b2ed45b0ab9b7c721e. 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/ARX5L2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52399b8731cc589aabeea9578c467929a9caeca2a37dfc027ef7a9a340e84733. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZTPX2392744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df40c29ac30ee120ab630dd0ecfbabee5f91aacbf690b4906cffcd82e748daf. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZTPX2171661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadd1ed7fcbbf3bca224862a2ec3b818893b60cf06961c25e594bffeadca1c6a. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/GBWUL2590033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762a498a0111a022aabcf8bee08c6f1b085c055f7dc100868cf6eefb89005c1e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBRKQ2530598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715f888bfd60f6eb95df0ce54690bd2aa10efc5c3c2df888f29ab6842e44da29. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBWUL2407774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579f6b549b949a2024646dd26734ecc736014bd16ff259b2ed45b0ab9b7c721e. 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/ARX5L2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9070c60a30c68689bf1c2f784198078faf1429bcf743061d1554545551a5f35c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTRX2400993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591cbeb7c4801690f553b703b0ca287b59a62d7f079ecdd571add89dc3f7af13. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QZTRX2401319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8beb8cea3b5187e503eac2ed2d0470dbffec383f28c1d325adac2ab4e4c05d29. 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/QZTRX2401771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f51a4a4e21a5b0e0e3fe40c2936efc096adc0eedae8f1e9e79ba1962980b20. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QZTRX2401862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6d4aa63b19a14d1ede7b45ed730982f22a8d95c4370aecee88df50763d24b9. 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/QZTRX2401942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2dfa39a4fb64c6bb07e4185553e3d8d503324c45c5c14a29bf32e644da36ac. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZTRX2402405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397bccba902cd04e25f85ee2c97bc589c024d49188349d32d411a78fad76d294. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZTRX2402767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eec208166aee2b1278a94192f01ce6ecce9ac58fdfc011e4f3b3252cebd1d9. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZTRX2402991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6ce797a5c23e292d920ca310e7aafcb307bba589c1f04f146825c797874246. 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/QZTRX2403806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916b2986fea2478da20566b01c097ccbaa4fb1701b43f3494310205306f3be39. 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/QZTRX2404140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57e6744cc31d34224ca043685c943a3d3b31fad9be6c439213d674a68917329. 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/QMDA62430040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e7360553642fbd98e32c5b6d103c84780e1b1ccaa186472996834934c58bb8. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMDA62430042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc09c9251921e119a81432db09f18811b9cdb94e4922348d175c5779ee701d71. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QMDA62430082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc7d6d8c0b0ab534a9b1e14d2ed9b0dadd207c6007cc9fc900019a64cc4e55f. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZZ8B2457645.
Vos me enseñaste a amar - Melanco Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e59af446dcf8aa1b5f0a54c80ef42bd918bfe5cce1a0e1fe2b290581d4c9186. 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/QM4TW2580656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc378ffad1f3aae2f3c5fdbbe7735a90ae501ee10c988b15e7a0d48c5cd9ac800. 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/QZTBF2398457.