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 0xb7d36cc07ccb976e9ac958fc2a743ada37f2bda1d59a0a4dd0acfd741c91848b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cc57519-d91f-4466-b08e-9b934ff7f0f3.json and https://artists.proofprofile.net/proofs/artist/3cc57519-d91f-4466-b08e-9b934ff7f0f3.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 0xfb6dd18fbbb4dd53f3ac122bbd6c72d1768dbe272e7aa9f323daa818cb37028f. 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/USUG12106428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0109697ba2fdb74088c530c44bba80b4593dfae3592eac3b26951d7340102fc2. 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/USUG12203861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57d45851a3e705c0e50324a0fd0c37ca67bf802ed0a717ae8ac16bff01e2d09. 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/USUG12204243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718d0cbaabf3a39e7e90dad3577f54d7ffe93cad16045481215340f30faaf704. 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/USUG12204235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500b68cd0dd65709d69e638405a4303e53d9a85d15527bcce51198bf38176951. 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/USUG12201622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d77455dfbcd2e567e1d79f1b3edf4d51dae6f80bbeb39df89288f945230664. 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/USUG12204239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100fe0e96c496ab82b60bc3f6e400367475894aaac8b38ac228069b2a9cf0458. 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/TCAFM2148303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed1061e6f73af238cbbeed9df1beff3c083da06d07c5fbf0383ddc8b2b58038. 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/USUG12402195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6376768d103dd9cabf9decfd4b6be5119a25538b80fc7e59ba8c3549758866ed. 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/USLD91757638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3ab9c77638fa1aced407f89e01ad885ba8d9f06f40c60a1fe21aa8dfbc0a9e. 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/USUG12401560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02621e86ae9b902c902d786dc1ef9d58f7d259b0d0dde0e13a0633dcf12480b7. 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/USUG12400780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd888919be8e816a3d7abaeed345810b5a48691aabc07add076c7c03b8f46da54. 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/USUG12308191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55da5a0fbdd2cb692d2b0679fb835c77db2e404c8b38223ff19698a797773ad. 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/USUG12306980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2c6fc88fe4dcb1af0267b6db06e9c9ebe76c5b95f61bb4a084c714c6d8a98d. 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/USUG12303061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92e1c0d5f72f9633f11af5af890b2dacc459605791eee2881fa3cd9163cdfa5. 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/USUG12300918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d9038234d347bb602527f402e4595459fbf75457eeeca1df55cfbe89a4e25a. 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/USUG12206263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3c04495bd8165fd09552f21f5cb4c6f69c9d02685c19df38cdf92767151814. 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/USUG12207832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ed99e630ffb9785197affa06cdddb42be7d364f9de8e929a7f2befdc942500. 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/USLD91737005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0109697ba2fdb74088c530c44bba80b4593dfae3592eac3b26951d7340102fc2. 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/USUG12203861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500b68cd0dd65709d69e638405a4303e53d9a85d15527bcce51198bf38176951. 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/USUG12201622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6dd18fbbb4dd53f3ac122bbd6c72d1768dbe272e7aa9f323daa818cb37028f. 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/USUG12106428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a7330e5963d30541b9165ab6ee3df2518e4d6ffa5c2ac65b97de51612fc4d9. 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/USUG12104980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc230a42bf4e02f83ed6a7450b5f1b63d6d932a1b9bcb5a0682b55ebe00029c7. 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/USUG12104988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6afadd19e69d3f0aef3402ac3d6dc49b80da6a239682c022874dbd548b3f32e. 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/QZK6N2132427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbb06fdd39338d4ce65f3592bbb6f426fe7fab7c5f4e54e124c45ad7abfeceb. 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/QZHNC2128107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a9bfb2e88863e945afeda6c8220c59e49b07add8cd689c39226d4f65588a88. 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/TCAFO2103839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100fe0e96c496ab82b60bc3f6e400367475894aaac8b38ac228069b2a9cf0458. 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/TCAFM2148303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09aba0c9390f11b241066bdb20faf31f7a700b0f3e809165d685fd8ace298d5e. 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/QZFZ22177467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7cb061dc3213e699e77383aa75bb49468278959bfbe1979131ada775f3a063. 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/QZPLS2004071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72b0de4946075e77805ae621e60fb3eb411b83b57a7377f819d719059d8dd97. 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/QZNWY2079550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab7e816294b279a207841f1aa33b023f48935cc245d46d4f0c20da9cedf7a35. 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/QZNWT2032633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf435de99b04ac314a1186872b00cffb14ef49bc1f52925f2bd5da527ad750b38. 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/QZHN42019712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5169ce9140c87e4b31393e7a1df069c64db1db148b83cb493e42d5f512ed22. 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/QZES82035766.