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 0xf69d9d7e635643b51f8aedccfd78a08b73508f06e6e3819055c46fcdb6137355. 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/2347e026-96d5-4d47-8f66-afb6bb0c67ae.json and https://artists.proofprofile.net/proofs/artist/2347e026-96d5-4d47-8f66-afb6bb0c67ae.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 0x491e8b0d15da93b38c0a4c3014aec4dac6a63eb9b4f4adcaad9b32f0b1c34c4e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USHM80905156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96140aed1101e73a56215434c5335c53bc30beacc0d8a150bfe3e5fe72082139. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USHM21400450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f671aff3801666a0fd96ee6eef938cf818211700c9066f28c31ace04c5e4d34. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:46:54Z), 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/USHM21400453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70f48070cf6930c373d9042d8a5818b2a1ce0c0110bc52bc3064581b08115e4. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:39:12Z), 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/USHM21400454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a480eb4e304fb9abdbe5507aeda459b1dc950821e3dd52abcf46d3ec535895b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USHM21400455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c84e6ba77e898f4ab861db26bea432d79fea8a87f0e0d704950734ac3e8de4. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USHM21400456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cd950b583cb7448323d3468b1c9d4f84b782fb99868bc1508bb64125b29647. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM21400457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe899647f34e56d49a03dc3d3479972f56e38a2538ae965097869624c94d5ebf8. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:12:15Z), 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/USHM21400459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ad3cb196c30f48f2b837c28ae73e2675e5c1301d2b317fce6b32d3d953221c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM21400460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2a8489364c1f5008134591bc069613bc87cdfc0f28a9c43a74e1a493412937. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USHM21400461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ef84ec4ed63902d572c5dc815f2ed5d8d63f67b1902246920086dd2eddc52b. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/USHM21400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2b99ab271157358deeb71e29afeca90cbda38a3331e27a34b32a85fa53ad8f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USCGJ1256498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8805fd02f753f87b06cee7dd2985f9ffd853180e07dcafb985811fcd743836c9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:23:07Z), 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/USCGJ1256499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe186fddec7482909e6d539f302cc42f155518d2fadfd4d6810f2528a247119cb. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USCGJ1256500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ca155d51cd970e717e91571a0eec98c0ffca3a0e7c40429a42fb0b081a680c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGJ1256505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c708e83ccc716d00060f43a9f6200eeb9538814505cfa57344e50a9b833556. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USCGJ1256506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed62b20798b95eb643b873db9c810757b422e2fd469e1fc8696233c20ef4cea2. 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/USCGJ1256507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5200049efce0e00b0b670f278385613285e22746a17ff5915a2f619ed3467b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM21358833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7686f8c3f4754e52ff37e80ac9830e071c7baabede4092da836dab6ffae5feca. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM21358834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7c5f669fb1291a0e2bfe590d71d7cad108a1362bf3d05fe7a662cf7db4ff95. 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/USHM21358835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae16b265b9267185b2701319de09ee46f5c58a95d10a68fe7d3f6c25abf576d7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:35Z), 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/USHM21358837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912c81c6bcd71edf70520b505a7185421e07a0e3e12e170722000a5ecb916fb2. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USHM21358838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82f3d8a37d1d778fd377fa6d6ed41b67581a136b5f7474f05c0dbcb94508bda. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM21358839.