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 0xc10dc819b1037dd4da2add11be21e2b0e4218072c457c899e703364bb23fc9ba. 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/da1e9682-63f1-43e4-a689-658b54f87a82.json and https://artists.proofprofile.net/proofs/artist/da1e9682-63f1-43e4-a689-658b54f87a82.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 0xac3715d872edbd4e0ce8b051a6c37b655960a3b9025ee3262f76caa3976cf74e. 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/GBWUL1805875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf216eb75f3236f39f96191a98548f0d81edfc20051d2c060d5d046805c0988e5. 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/QZK6N1945170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce16c0b0a992096a32f13e0b30895897eb1a45aba298382b3a759c39c71d79a6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM24S2402880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc7dda3e23c0f99c1ba97ebc0065f478707e1139e2c8ea49ade373bce54d4fb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWS2020069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380b2f3b1a27ad7e9f086c1184a40d09b3d80cd1fdf066d0a1015d2a90207350. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN72092485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eab38c0135bc001e27fd4725c8d064386db6eb1c49199bbcab0f71a11fee125. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ8LD1920758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d82eb90e18f50ff158594010f57d643f127f1fdf3bd15282a96c5af5761b45. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA6D22400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ca3bfd6f71770b6d753ea8da28ae294f43e386aede408500c84adf7e285a86. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA6D22400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dae25a2a87fc4298d7c6a5f760878b7a22c2a4885dce98276be02d35c8598a. 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/CA6D22400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee610ae71c4a2c915cd25527892f3d2db9b1bc6ff27be2d39b00f1a64e439f0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA6D22400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605c8bfd67be32c386eb9ed9e4228eb00c5375b710ac54588dab52a24710babf. 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/CA6D22400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc778d4b8b53641648cc84b71a711f5a73b5937840d582ebed21130e4c3e18f. 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/CA6D22400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cf0b77623432805fe9396f8d91b6509b3336491d1ea4cdb3f9321287ce86be. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA6D22400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c96087703447450457bc8fe4105a357504319b9ce31b3c00091c5515c4c4148. 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/CA6D22400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2887832fa276e1d0fa88b64b120be5ee1f53fbc1d98053e2d0525e1ba8011d11. 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/CA6D22400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec9126139c5cbe2382b798dc57536e3905523156cc5f5797e68a5196be80413. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2405017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc569ca99ca8be4ac1b539d9c65a09a8cd2b828d24b5727d87c506169b501a76. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM24S2405015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1fd5b8594f648fd5b69f6bf2f03f5418b41db440df032ff08c419786657ba4. 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/QMDA72159400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52fdeaaf5b7f8b509bbe8bae5b40b1dca5155dbdc4eacc0b49c2022b7a69a1f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA72159402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992363e3768417ef38cfabf61086248d9d76937d9c5e8a8a940897948200d265. 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/QMDA62158118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d5b7943346c003f1bad13057db1c34b1738ae9937d153388276d5ab521518b. 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/QMDA72159432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be8cad422d6c59d093e0f860403a30d50829f7754cb3cb0333382ef30e0a8f0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA72159433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0d65e5ee1d345b59a67093b5a19b39fc18388644b71e3142b720b7d0140773. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLZJ1868702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6834693a737fcf22b870335cb187b7a2c055cc34923d7d2f88ba01988f448caa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e6f5d6e25cee51e00917ee4ec1f3ea2cad09210a083318d04afb3d203c3f61. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2500319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbd1726abd4ced9d97b220540fccd378cb3b4f74f9a0ada933faa049dab25e9. 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/QM24S2500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e00edbe3f75a19b02c3e9cbd487831b317bd70641fa14180db17a0b36faadeb. 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/QM24S2500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9cfa8f5ada428e7bc9a3e8d0c13a5a9b36c43f012b0d48a3220e7911164627. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7669b6e90de8255cddd37d1424bd6de48a9859a890570034fb6a6bcfb33c0b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2500064.