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 0xe037300274a47a17a2c3702f92b076658362da49aa396a284c4c0a46bf14ebb8. 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/a0109b5e-d443-4ee8-a2c8-5273eae80c17.json and https://artists.proofprofile.net/proofs/artist/a0109b5e-d443-4ee8-a2c8-5273eae80c17.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 0xf420be3605fb3ef9622fae2737360de456b4238f306fe4a3d49be85d3ada7f05. 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/QZFZ22045966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16981e81f6849e5baf1520e777514baa8d8da017d6455b9af733a753fcad9f8d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:21:47Z), 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/QZFZ22098498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6be7aecb3b4d1071c782cc3252765174a8ce3721f05c255c88533017a7d552f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZES82053990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b40a8fd6b2b042b9c123e970ef94ed2ea81ff05559794e6a3879b2b21ccba4. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZDA82149057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd044173ed191b035a768e5527a1be25c378ff3cb9164cded3422c7981b8315a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZDA82149034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe840e16b6faf071e2465665511ebdfd111f6cb1b5daeb674b9a6a55e50136d59. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZDA82149052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341006ee2aeac2ea720aad07981dcd567bcd676410b1c27db0bbe54fcc0fbbd4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA82149007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5571b54c5b52d5b32e9b69f8d42ff91c2894af04f5a9f93c4f477719f97f649. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA82149036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ea54f730340a792ad6d44383942dddf8f5d2d748fdefcdf4e3ef91c7ce3c50. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:04:57Z), 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/QZNWT2222109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0beebeefbdc8828a9286297ef8e879d288bc030b233dcf07ee20d37a20f530. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:51:29Z), 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/EEVM12300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0783d3c655468546086e325bd58c5e1afd93680a1a0e2d817de96dd45fb4d6ec. 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/EEVM12300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cc3be6fff855dbe9a3e2f5534573cf5c11a8fc5f5b72621dc8e4a967ba9995. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/EEVM12300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac1faf54db5909ba120c14921927c4accce43fe13dc119828864c70f891b4ff. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/EEVM12300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0ac4b553eeeecf0b41555e0762c92d923cc561b46339eeead94f318b066c0d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/EEVM12300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf44de805fb06f1a22de68a74316dc32806fe4e3c3964474825fb56e04b00512. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:29:27Z), 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/QZFYY2462565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0432cd9a5c6ab58405102f1a0b6fede27de976e32bb1c77aeddf4d4d106c3670. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:54:22Z), 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/QZFYY2462567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998358e75a5e7cba02647ea444305c8b863ee8ffdea27504c582ad8d01576beb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:27Z), 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/QZFYY2462568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387bb6f79592f277404c183277fc2c49d4148ff247b1cf2755151e7b1d6838e9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:28:22Z), 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/QZFYY2462569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefb0d652809267d84611ebafc2bcf8c0540b31831b6366abadee91b17dfeb81. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZFYY2462571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5935c6339b73f26d3d355e9006676f0de0cd03dd7ca7c5152dc4c51ce25fe7. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZFYY2462575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af6640d5aa4d1aee316045a7ff6124e31bfe2b2c95daec574a820c3a7ef51ed. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:02:55Z), 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/QZFYY2462576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc62c8167c9392f9afc68638f4034df2248c6b650dcb16237fde10c89eb506f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:31:49Z), 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/QZFYY2462577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422424b2e9ed17d8d206e48679bff4bace1929327917dcab01261cd5be9c80f4. 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/QZFYY2462578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b66c85ba0d3e75e78095740af0dc11f15cf7d2e1cdaee2555263ec73820e90. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFYY2462580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c78f1262358b70a9791db228e6d9e0612b986f2bbb79baf5237800da8d60070. 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/QZFYY2462581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532c88a631aee7878b95402f7e5b974024d89b83cb79049207cd871b2a6267d3. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZFYY2462584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d8b8912926a3c4b31f5280cd222e1108f2b9a727eb3aabea6ce5e37b283841. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:55:21Z), 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/QZFYY2462585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765f5988f917d611d6523f483dc1d90075621f95ac5cccac9771b11f3ec0aee4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFYY2462586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960479665d47875e814a3a2cfe927bc5e1d96e06dfccd91546dd7f1b5fcaa59b. 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/QZTBA2461690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f83e296f44a6ffcf457c882c1b70854a68a899551d0e0f9d06a25734b8d49a. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZTBB2485943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57cdce939e36f0ac1b7c80c2e8ed0baac90628eff8ce51d7cd4fd1309c8541e. 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/QZHNA2536511.