1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf07f65e9c540aa582cbfd888fac3ed0a87a8173309b3a6f72b7cf1d0b0a0aa94. 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/c5b3ce42-8b42-4156-86da-7461279c3c51.json and https://artists.proofprofile.net/proofs/artist/c5b3ce42-8b42-4156-86da-7461279c3c51.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 → block OTSBitcoinBlock must exist at that height 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 0xdb880ef31f7f760ad43d033f6232fcc26743718199efcc0f6c68690784c18568. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USTCZ0911962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10321f26d3a7759a842b45fa9bb18e31624a04a5769fe382229ca9b0721d53f1. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USTCZ0912319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffceb9fae4bf3673a79274b5c2259f097724a4863e9a1205ffc29052422b4ccc. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USTCZ0912789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fae1239a4314816940854bf8783defc9ae0d8d0fb615516bf618f1216df8c0. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCAAR1073381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb0c8ce0e810435d1ac8a41fc0a289c34f55ac7c57a1d03c8af78b0b8019fa0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAAR1073382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ed9a3c0cc0cc67427555e12f3868bc7e11eeae1bb7982b1294a0ed65b655c6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAAR1073384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511a63f0944858b2b57966db6fe4afb84cd7205dd9492090df0cc4fcf1cac248. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAAR1073386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756311ec1cbc2ef11928c28b301e861b9c3acf92067b5e7e02743c86de8e64cf. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAAR1073387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa89cfa6170e7eea4119aa0786f3dd02bf8fee6c6e7a00786a3ee0860564acba. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:19:55Z), 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/TCAAR1073389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870b3e6709d4304a22fb7ca52981032bfac419df27035430dfe4956238e8b939. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAAR1073390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3bce101470f0c3b45cf66fca1eff67befd0ed03353e86aa47dfd1cad614efc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAEF1928283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e85cbd9a9d63980f04c451ac2bac4950ed79a14233d7fa6ad73d622cf3ddffd. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAEU2038652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343758341ab75ddd3a282adf8d07f05f6cc3c5a8ce3b6f588afe7677cb043212. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAGU2362617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf763c325934618ef6ec5bcf35d6ecfd9f2d37c10bc164793ac7fd4d051ba4e5d. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCAGU2362628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7fadd2b23d679731772f017f58083511889a3332f87a4598633b63530242c7. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCAGU2362635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f27a7a53d3d223360e97b822737901baafba1464a97cfc66f1e87ebad925f0c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAGU2362641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4805f21b6488f46b929a338e39efac1c2812c8b72c2e852ff1b71e7910024a28. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:23:00Z), 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/TCAGU2362643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fb89b45d7cff8c0fabefb5a81ce3ecaf30459d78e066b93f8af1675f6c1213. 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/TCAGU2362645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda88a2a20a4227dff714849e5c7ef95b78d6034266cc1c6cc6c9ccdb1524d26c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAGU2362648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc8d101528e1982d968f104c40b25db40b0add0b218016576435543dc5a003f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:17:14Z), 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/TCAGU2362658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ad9b94f7f92ae079d3aafa2b85e65a2ce88307ab872c57f32747bafad213c5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGU2362661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f3a5fb94c81b00c9271cffd7381306c09f15ecdd9d7558fb3988b5fda2d0d6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAGU2362663.