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 0x3193dbb5ddfd8300f4f45ca422c28dd1b1534a49ca3822816a00646cbf4d8d1c. 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/f53ffa03-674d-459e-a047-406405a32861.json and https://artists.proofprofile.net/proofs/artist/f53ffa03-674d-459e-a047-406405a32861.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 0xf9163b13481df7ea645795c8b2965410e3b65eedfb7a5cc1bdfe8f282f5fc992. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR96X1639282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd970c1ba9b2a8400ee8ee91767e79b96ca4aa7f11330b407d987ad096dbd486c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR96X1639284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7d4342cbfda9168b7f604d2275cdbfd5610ef3a8571bd5748a8683cea4bfff. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR96X1639286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5d027617298e933cb1139d0bbd8515f7c0e06180f5c7f84fd533ca9823fe2d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR96X1639288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6be3e24e380b96b0c57479601b49919e1c1baf1eafe0786ec95ffd337a6613a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR96X1639289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca4d93fd3a9aefb076133c70dbe12dac4715b48c51998bc81605ccee06c5e29. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR96X1639290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be6a16466798d564c875c845ba34bdf7f893696ba36246d509c822668defcaf. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR96X1639291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033ecfdb291a57d054c84681e0b949b1585a8328f820680c442d6e4897017775. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/ARY4P1900235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9eb2036cf8f60023bc637248faf63b7ba3d5aa62ca6c7e8c0e8e244cf96801. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/ARJF61900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37969c811591a5fe1d151c4d58b78f4aa4f3e11ac95565731dd7623b2fc9adc6. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/ARJF61900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5cebe6b6cb7514dcca233f4c73a49312aa52705eb3a7385cc4068f896c65ea. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/ARJF61900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa775067db258e96860948df0f04909d66a9d5d8d238a9ee6a738e9c6c89155a6. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/ARJF61900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7101abfa914f7f41cd253c0bc3a1f63c3d44b6b1e2f668f456c31673e2147d9f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ARJF61900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3277d8fef92fdb821869f7642b25180456f41a21a0c99c64d2fd47464bc08b. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/ARJF61900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2544f35b0b724428a2021f8943e7817f456dbe78f143569c203d8d698f0cab9. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ARJF61900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecc0d6c312ce5fa3c27dc09dcbaab60ab5ec10cab2f5322846fbf8bba0f4423. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARJF61900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4de00b6224adeac28966382ec17c00a6f92829a424c582f5f2e16142ae8ef7. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/ARY4P2300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea4646dbcedcb7b453df909cba6c01914826585605f11de8d2f53e5fa126778. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ARY4P2300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf901611e4c4d9a141ee36fbe6340a7ea9cbdd94f840e7bed5d017ed74f5999b. 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/ARY4P2300154.
Última Estación - En Vivo en el Teatro de Flores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e0a4e84ffbeb5bd61cf1d6858482b717ba72393c9c39e86bb5b798653f3838. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZWFL2321137.
Tempestades - En Vivo en el Teatro de Flores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfe57fa45da4d730efa3d5993ce6204246d1ecdd00cdf541945ceeb8f662641. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZWFL2321138.
Arsenal - En Vivo en el Teatro de Flores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f25c140ab90e871ac24559a48044a166f188f1b59f70854c211f1d0018364d3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZWFL2321139.
Somos Banderas - En Vivo en el Teatro de Flores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba0bc74b6966df9df8f1ec8e74c88a3aef5eedca6c201aa583e5fcb83f98758. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFL2321157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2460caf69e4a42327e529b3e22f0f552b0ffc84478c2a5773779dd7f868f9f79. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ARGIX2424001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ca41c87905a88a8a75b318e0a8142af916153450901ba68aaee1194eff4a36. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ARGIX2424004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594bd29f3da5548ae45d3d446b236d40531bb1d3714bcb44a3f9196e9f5672cc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ARGIX2424005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6de26a29eabc5bd779b65ac5485bf8e590ae171afcbd03564b39f81f63e28f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ARGIX2424007.