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 0x92293e53fba4a9ddb5e11da9b77e781e96977e7c367bcb46986cf72b61297966. 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/5355cc29-47d6-4c55-8b71-8e7f0c0c5af1.json and https://artists.proofprofile.net/proofs/artist/5355cc29-47d6-4c55-8b71-8e7f0c0c5af1.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 0x160a965a6fd1203bef2f43247b31d05457ff24997630b69c693fa32bf1c5e949. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6HN2371535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080528bfd7c98be3f331449238ecd6196e78a79a415186371a72f60fc728efec. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/SE6HN2371538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41bd68a9b025932a73a48e5aaa591055be7ad9db41811a69a90f6a5b3ff121d. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:51:03Z), 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/SE6HN2371539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9694cbfe3d8422217f4a1d123875461336f4d7514dad6993705aec3b5328cca. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/SE6HN2371543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a98fb68bf542b515e1f24c8e9d54a521b2f430d48df268beac2b80b135800f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6HN2371545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f5992dfb50d1b033bd8ff5ca141d06564a12dcffdd09f7c1eb38c01653474f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6I32338888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfdb1d45e8e7195eaf32155b3dcac51351a2d225ca49a339ffd01b3ceced187. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE6I32338891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa18aa0e88b9baa42a52d29f407d2fae84352493782ae18704701e4d97f0440. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:44Z), 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/SE6I32338892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc0f4bdb3a1b6abdc3ddb7f33ba1da7b9105a8a64cfec2a4c9eaedb4ba73bf9. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/SE6I32338895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb278b1055b34b665cbe945959fbd90e06bb17d6e6da8ec26a3649abc4ead3fd6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/SE6I32338896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46123f7dd015c6227a394259a67793f0dc1f9bb907c08efa2329790b39b55303. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE6A92324624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907a554cd08cc00651d4ec060d5ab65ab4bc588ba180fadebdc584ef4c221558. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE6QE2417922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd8e849c9237c01d8f5a00430028086ac1dc69d4bd5939679e9893a3b763df8. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/SE6QE2417923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b6a109593a71b5ead3c732ef39e28d24b780e38c1387f27bb3b2a8a8307e0b. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE6QE2417925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d489418200c29e49215499facf15cf9e1beb0c5d42524c7fd2f0471e072f36. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SE6QE2417926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e35b2faa12950ec616f441eae873e1709337ce3a320ae6e78b7906b47febb2. 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/SE6QE2417928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13944394a9d0c80d8188439711688286f41ccf40f3493c02f3b8ad1d46133a67. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:05:09Z), 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/SE5752480711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2e9893dc9fff625e519bb3d0fdfba9e075d89c9d817ef0cbe4b3683fc546da. 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/SE6HN2497462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa4e4facab0fef8d4e76966b2b24415ef3ba3b80c089a87848a966f630b3d1f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SE6HN2497463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdb963e36e101e0980fe1bfe05f1b42cdcde624447a70460f805c184b5e21f1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6HN2497465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f18c3ba789867488787440fc3aa3d69ca6f980c7131065945c315152419a786. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:27:37Z), 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/SE6HN2497466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac83be0428de75227d4821a809f9a45c0082912415dca2825cea6d60c5a0fe58. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE6HN2497467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9409c22641865cff11bf8cf1abccda15b76840a195d5ede8656354e70beebc. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/SE6HN2497470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee2d9e3fb47b0dea0a9592cf10675dbb484ae69c9671b3b0ada3d0341e383a1. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/SE6QE2464470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cf8b941e765c6c362ac8d2d2c05561b198c5066a800ff5c9260e9b3a56be88. 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/SE6SA2407943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb0c68adc45b8c9e33b616a177327592fdee1dd654e61c5a373600d12d54b5b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE6SA2407951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907a5073e8145621ac7a2dd705bf46e68c7228deb8899b323b0d3ddf85760717. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE6SA2407954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fbf6aac6c5bbda818f68b7c6808e35398ae476049667d7d68025dd8a124b07. 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/SE6SA2407955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5047ada62918e74b921bff9e7898c4649a0c8a24ce918e2e3865cc8e9be485. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/SE6SA2449802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206d9ab7a6b5dde06c8608383b16e0d0688d5e56b1e685ac54d8813ab95752a9. 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/SE6XY2536250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f29d2da9c581c98df1e1b39ece30ddb101f55da97d802de742928f9967bf172. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE6XX2564710.