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 0x38a8a3c4424f1a8a74574e5375c792b28dade00bb0a75c39f3954c051cc549f2. 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/36ddfb30-2e34-4275-9eaf-5284b0b4db50.json and https://artists.proofprofile.net/proofs/artist/36ddfb30-2e34-4275-9eaf-5284b0b4db50.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 0x2abc414abf90137f68932e51315e2e8f9ad023a38f35bfdc15d2ff1591b67ce7. 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/ZZOPM2002121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cd680f802efa5042ec271d617a012fa713f940be867f16f9ff8a341c9c6226. 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/ZZOPM2002122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9cceb3e15b51f9d7bbdf087c1fa2a1664ae4bb26ba4397aa0b70ecc3c69141. 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/ZZOPM2002123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f79bb14cd84edf0938ea69884e18773a664d77a23370c653f5abeedd68d8fc. 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/ZZOPM2002124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d42b0fc4c81f24673f08f0dc98ff020e692afab943467071f2851366b2f1d32. 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/ZZOPM2002125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c394a009dd35aaa76ee05bec46b6be90964af62d23a37301a3650281df74fef. 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/ZZOPM2002126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1f09beea5ecd63d234a0288e3d9c53ab2d80bef4c063535a11de12285f14c9. 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/ZZOPM2002127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a90c10763f307a4a9d33c11610fe481fb5f064ebce583768340b06774c581e. 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/ZZOPM2002128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cfac55f62ff5ad728863c3f5333994de65c7f14c053b24ff81458b6e70700f. 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/ZZOPM2002129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1488b88178c8aa2cba05e38cedee8a37b37c792a29a8d15fdfd2a081d3c444fc. 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/ZZOPM2002130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552b1e8c9a1d8b66c63ef5729fab9ed21a429403eb59567bb92a887e28df2539. 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/ZZOPM2002131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd080bb0813f79b9cf85f07da0152c09545f86875aa9f0483879c7fd42f04eb77. 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/ZZOPM2002132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11c1d22dd9a6c432d504f87bd9cd9a2f85b27630c327e2e15ed15b17d58f309. 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/USZXT2351492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39378419293de6a07fb11a3bf2f14ed7b283aa413e84333bd9ef9d0010c734ca. 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/GB2DY1900491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68943755030b5ff811846bda26b42264e8a56d5cf9d21553c0cf175365976380. 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/NLRD51952560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd466748a956fd6b6776d3307711799af8709100d1614ae11733943b196a5b075. 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/GBAYE1704689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688b62fc8aabe2625287f9984d4c508d05684c6609fb136d53304f8795c3513d. 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/GB2DY2200251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d54c7bc64a9fde412552936660ed7544dcba3c79879e51cbb011ede3b50081. 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/UKXN22317773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf714498c372c52088b515dc7c2f2697a9568ed1cd0922bce84a93e1709bb754b. 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/GBAYE2000509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb084c8947656569eec5aae8640cbf03cadb9186747fc043c284fa5be266425c6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBEU71500294.