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 0x6f9eed40f6de9d1364104cdbf676043d3a22bcff8c5852185c8a3c88806aef16. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2a10090-6dc8-48b2-97e8-f9e14f51f65e.json and https://artists.proofprofile.net/proofs/artist/a2a10090-6dc8-48b2-97e8-f9e14f51f65e.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 0x0a2efab90348683306c63f3acba73e6a3bde4d2a8c5997aae16beea1da1335c7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DENC31200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8df3e79e2d4ed5e0f4c795dc49c059ac4f2f69130ac693354c7144980a0315. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/DEH741305966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dda5b53ad9bb9cf79da179339e52c75e857b000e644ec487ddbde05c5c193e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:56:48Z), 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/DENC31200194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9b8f47476ebeb7c860bf945ae430d0687d099076fb81f1607bab1cf882eeb5. 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/DENC31200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a6a9a3179e27683ef97ac320337e24e38a395895a0932a731b9b88c27ec894. 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/DENC31800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd79ef626052ce162f35d193b12eaace820de0d6e87b3de10c48d257769e4e7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:38Z), 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/USLZJ1829214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0f96bc544fc580b8fc04ee9c098d5fea1dcf624992765586ca2f2477e53214. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:18:44Z), 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/FR59R1890363.
Volar La Pluma - Andrea Oliva Remix (Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca99c76e50a2474a7143af72a28eae4a40787a21b24968f745b651a7102c1eea. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GBJX31982017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca99c76e50a2474a7143af72a28eae4a40787a21b24968f745b651a7102c1eea. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:36:54Z), 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/GBJX31982017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed6e315b6d2520efbb9ddc22747e260c36a6f6a2e4b57f4634498233668192e. 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/GBJX31982020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f735cae4b86818095b0b43f6e249f8f3d0c00ba4e567fd282327e8265e35fd4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:33:40Z), 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/GBK6Y2116801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6b52d06af858c514cc877d04086553cfb34db77196a956c806dd0780cce8bd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMBZ92141196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9614f28929143837e18ee9e3c6fc0438f066e0168a382606244637d2814dcbfc. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEX042300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eeb4495a4eed042f0911f3e39c3737ac97448ffcb688ca419dde01395eb8509. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMFME2313675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a19d35b4e3dc82f5d390364bcb3f842fbabaf67c0aac516c16b28a619d0044. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:49:25Z), 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/QMFMF2359273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c6954912322d5a262a28c0fe8ba6daafb4109a668d43cb4a09017fd3819650. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TX2426660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eeb4495a4eed042f0911f3e39c3737ac97448ffcb688ca419dde01395eb8509. 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/QMFME2313675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef36bcf4c1b890751fca7d8208cdff871fb32a436b357fe41b24a10f9225b1c. 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/QMFME2378859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c6954912322d5a262a28c0fe8ba6daafb4109a668d43cb4a09017fd3819650. 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/QM4TX2426660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe777284709a0af43520a352a3b5f3c36dd80ca56a57957bcef82cb1de5d7ea9f. 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/QM7282480098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e85485761ad4440be2591e11703b7454ccc0d53056f96569703a3fab12254d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QMFME2378861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04242d64ea5aa2c30321508a01e1370d79227ad60c944345742cba321f0a870c. 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/ES5021600124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7760d186b2414604b768ac86fb16dd87775064c00b16e15ba66e532e4cdd11b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:40:58Z), 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/DET751700032.