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 0xea2959700ae1368562e365c6d151266173e01ab081ac8a9a7aa294c3bd3aa004. 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/dc58563e-6c07-48d7-aca8-027756e02715.json and https://artists.proofprofile.net/proofs/artist/dc58563e-6c07-48d7-aca8-027756e02715.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 0x32953e22e7e885a9c50aa35ab42a524ff8e2e2e2e3ea5bf37a288666c92a5eb9. 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/QZK6F2420984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b2394b7556f41e992580a871af5875620a518e46f005e0dedc893ebe8d66db. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:52:29Z), 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/QZK6F2420985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdc00c04e634db3de9866dd77b53e611a1c0e3e6dd37a8fc68ebb0cb191cc56. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6F2420986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e85626143d5f400243023962dde5db6db0817431b1016967c33f37acc564c91. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6F2420987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db9266d74aaaca2c8a45733347482ddcc8dbd5388516773811c6ffc600b181f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZK6F2420988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b29e0f5357f974dea99ed4d464066fa8555b588c051eb93d4669034280768d0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:09:03Z), 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/QZK6F2420989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a66c65106037b8408002008b730ae86b4ba66de9f7d5962b81a4b92cc33b4e6. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/QZK6F2420990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2e1e9f360ed351143443a0bfe7541df964ec3023c05587c621bced34924d15. 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/QZK6F2420991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b7c2a3dbf93b52de64af911d57ff3661e492fc41769fda0d6b0670a07caa28. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZK6F2420992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2553eb9ae23855f8f973506968dfa9d0a79f0d63e6b5ae38590b50c900bfbf2d. 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/QZK6F2420993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8d408326cf2ecd9a4640b782e608b65952412fd90c4611bcf2f4485d533525. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:16Z), 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/QZNWT2410071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ca14eefd7fd9a198f89e357a2e7626b9cfea3f67077c1cf75957f84479b48b. 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/QZTB92469848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060511bb0fe6412202e69652bf309e60e1e588f4e3f25004018387f174184a62. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZTB92469849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c9bb605b685f70a9fd7d53e0cbe94c9291f169a56ccc9b00ead62e9b2acb16. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZTB92469850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a94a874f28669019169981c816979e7cc395b69372737d89495561576d47e9c. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZTB92469851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12a586a59912cc36b3241ccbbdb5b4d5e748e689ffe36482edd7b61a2c7bc02. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTB92469852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28330e9b4c3d3f3e709622beeb7a04ae6e4108e63b798732b788f03a4ddb5095. 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/QZWFN2424455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af6707f1342fb88ad592e3461fab07063382ec16921d45dc48c2e319e691570. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZWFN2424456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2f323f0bf555d7852ff2781d3775b8b75b4229f9edb88e03b6a86d0971c631. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZWFN2424457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e54c06edafdd3c54a9e11933d541445db8e225ce53de158dc5a67146286620d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFN2424458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7698c5436962ab09551a190f27ac36fc224953b1dc4d9ba079fffd30273947b. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZWFN2424459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e2dcb57a298ce2c00524e450466240410bbbf8f739e3d81680cfbe0eaca450. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QT3F32464894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525175d5593653500d93bf48fa6990d8b3e716ca11ea1dd40bbdac956ea428fb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QT3F32464895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79cd75bbdc2a12c09776adeb16b5929925e41668ee42d6980d53034541d4f0a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT3F32464896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d59b2ce88278866c41a06211580503134e41a320dd328011ce87783c8b825e0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6K2506324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7befbb23130805c03b6ddd29d5f89323c9f5a81c8c6d38dc7d6b445cb2ed260d. 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/QZK6K2506326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f767a446e0859fe6a8ab80f1e01f4bb97ba1a8e3e94989049c79501c27ef109. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZK6K2506329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e58332130140676950d6eab3a1923638f65e7a142b2ed6f946af7f8612ad3a1. 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/QZK6K2506330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b72560c0235b9d0e20af3743d226a443d6fa6da79e0714a76c19a802e3b3963. 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/QZK6K2506332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9efc781d79ee2f0bfecce11359f0e4d087d7c5f91b3231b7da3d9ea1959a76. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZK6K2506333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff4a0e37cc9478d2adaae67925e8dbe16b8bc375ca03ddc300f2c9880fefbc9. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:31:41Z), 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/QZK6K2506334.