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 0x17f4075900605c52f7e01a61d1aeabce05c8999ae986c07234b61f250de170ed. 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/708e417d-0dd5-4b66-bd94-7ad3f286458b.json and https://artists.proofprofile.net/proofs/artist/708e417d-0dd5-4b66-bd94-7ad3f286458b.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 0xadd53ba41a7e5ed8b8c05b047417d85607af644053a61acd116f25bfee6f1c0f. 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/ES71G2054236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa564150d7f53ff85748b9bf8f83e87aca01098ef462a79c7df8a3e4b94f341b0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES71G2151598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb85820308cfa5a5993ed35bd665a70d4c9bc931ecfee762c3e9b17f2f6eb164. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USA2P2407970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f163dc0f70666edd763f85a04078bc8d315633430837b4e440a8ccf3d4f4b5. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USA2P2336435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2339e8a5bb3123f7fb9603ab45ea3b4bc0089457e5551074d79b94619c31245b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USA2P2407971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b1334d12f8664a3b95390199c9d62088ae252dd848c0aaf30e5a508551035b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:00:05Z), 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/USA2P2343312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf56a249856ac056e0b23329ba74cef1c2fa09b562c3aa247ec4365f75348a93. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USA2P2405936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce7a2f7716c558d5d4abbb6c5a9eb1810b88dd9f597c91fe61d1b2dfafd8fbb. 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/USA2P2354405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cba14d425fe6016c9bdf2510cb6cedf8fe5ba287c22fc7d6cb8013681b92728. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USA2P2407973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1169bfc00ddf87b3ee8a5eb274ab2f2faeff624078a6f02ec7fc3b97b8715d9. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USA2P2407974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd153e2a0f47230d07d7497e7da3f273832c905a7ccbe0d06fb42a05afc0ace2c. 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/USA2P2407972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b998987e0304dd238326ef5188e8b4bf3ded529959deca64bd006640dc81871. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USA2P2504985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677780f69c10976ca80dc415cc36686f182d0af52932a8a4c59f98b1078decc7. 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/USA2P2510086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce32d686f9be13493ce75002c5cca3848a21434e21151c281f87b713db3d0ff. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USA2P2511665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a044e0d7e217dd2d963eb0f5b548c6ac59884abefca2bebfe50e775920e7be5. 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/USA2P2511666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcbd37df9fdcab0f68d0aac33dd43c72020c96c65abce5e71286da7bdab7781. 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/USA2P2476425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677780f69c10976ca80dc415cc36686f182d0af52932a8a4c59f98b1078decc7. 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/USA2P2510086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b998987e0304dd238326ef5188e8b4bf3ded529959deca64bd006640dc81871. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USA2P2504985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1eebd98ecd667b43544b6d971a4e3520f54f65c7fb7d0bd2abb0da6d0086fe1. 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/QZNJW2361907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f03ce42419cabc8bd64994e015b28bce3553b04c286b05f0b1d164d15863dac. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:49:57Z), 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/US1ST2037009.
No hay nada más de vampiro que tener unos primos en Portugal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9e870cbf78c7c9488deb22e384a1a25de23e78bf973ed0f79e8a318f57cc7f. 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/QZNJZ2439778.