1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa0494d376a320b630728d597e9e5de7fe3d07aacd75f6d5c0b918613b9b8571c. 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/9c874b65-3a69-43b2-9b14-60fc2f80eed2.json and https://artists.proofprofile.net/proofs/artist/9c874b65-3a69-43b2-9b14-60fc2f80eed2.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 → block OTSBitcoinBlock must exist at that height 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 0xf4a4569d4d1e4c00441ffc301752d28f5fb4072520d729f470af20a612d13051. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ZA5QR1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2382d8c7d1d9da2fb5bd1211059c6f957af09d21f273595c557401f7b4c62ba. 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/ZA5QR1500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3531455f7386280c7213df8bdea31bae4d1a2b1632be77814c3b287b9898676. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/ZA5QR1500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83af41eff96357f5d3261a650a6e539cb4a75e0fd8995df5f26d75a46161b505. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/ZA5QR1500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f2e27d7984a557deb38e155231a938489871850b5c5fb7101f9f43f46ce3a6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ZA5QR1500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475b5f0ba451f6f7e350309dd151745c1210b9fb652542fc7a5eb2444d173669. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ZA5QR1500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09e799e188803ac7f98345db211b99d2da65253851a2d4edd4b53209b734f3a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ZA5QR1500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc102b37e89ad9ce07b07f301e5c2af5417de4754b5a596dc4e50b7a227402079. 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/QZK6Q1928260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410ec83c3f55ffa71917a09c02b15e2518eecf0fbb1b459fa1d601f6236427f0. 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/QZGWW2032553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab0c21a5be8955fd03d424e6697ea5f5e1decefbd74b9aaf5c02768fde4b1af. 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/QZES52020200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80842733355f87c40a1dd04c8fcabc8e77980bb6a176df70018ca147d9c1b199. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZHN52050225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c617be67e8728256231f9b26aea7a8516357f9dc9e52da9d1e05acf1f97cbfc. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:53:19Z), 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/QZHN52050226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bc5fd9da92c2448f2efd9b9bbc71e5a0bcdadc532fd9e98a44430be803cd06. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZHN52050229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0428a5b2aadcb76969fd8b2690523c4231f2447e65d9fe56f57663bdccc890f3. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:36:59Z), 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/QZHN52050235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba19ef7accd8139f7371281a322af96b37766164b760298549c5d55b35f66896. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZATC22000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7852dc5540163957bf94ea9228efcb40d8326b65a8d5738a8c87981f4ec00e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GX3Q92062131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaae6e0af5e2dace043ac8212e8fa3c286ab6f0375abd69dc19135eca79eff8b. 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/GX3Q92080615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c22f6d7049244c58ffefabf726598b262b17739d3da78d87afb05c84ba903e3. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ZAC012100564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb9dfbd13f65ec156614f6549747db8ef3bb197b97401cc45233de163eac2f5. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ZAC012100565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34838ff136c8b321de0034edd757403b46a58a28d193fd35546b95938563334. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ZAC012100566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2bdc5d8a6ec030a6983cb94bcd1346d114b2ac02da10bc6e206fb074d438a0. 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/ZAC012100570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891f555a8763526215b8782a50583d19866e159710947f8f1d2a3aef80311ffa. 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/ZAC012100574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d2bf3da4f8bb18eea006ff6bcc73ec1627dda31e5fab88e1f54f19096d2908. 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/ZAC012100575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e5ebd8fa066bd28ccf953cd034ec012fb06425df6168853259d152cd06eba5. 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/ZB5NB2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a63fdc8f457f580769e3758e89c01c24ec26b14a5617ef4373568f3f9bdf40. 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/ZB5NB2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e23004c5e64f88a245e20de35dcd00f5f3d41851a50ee023c185d9c12db33e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:31:53Z), 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/ZB5NB2300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e601f8c7fd7728bbd69bfbb090097f0a1290d8eada9c35c0ab681c2c05de31f. 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/ZB5NB2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634254ee7c2b9e619b5b71f33f1506603d1ae1c5be07d3539be865d6c5b2f10e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZBCHJ2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4e6d388fbb96c1867dadd3ba5d05236865b5d0a84e0a6676435923baa3ec08. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ZBCHJ2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcbd3e72b230ea84aad23537db3fac67268ff5939c3d849baced8cc644c22bf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES92189432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695365955998f8ff5c6f0a66d7f59ced6473495e18d5e9f4aa2cc900e4ea6bd3. 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/TCAEM1947114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ed56be97c7e39f9ef97e3b389f5a8936bd1a153a15e1c41783081391cd8215. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES82133861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2905ab680b17cebf8f13377cc9720c6cc669b1c1380253ab1447577a5a33954d. 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/QZHN32134791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eee4769c6085b4667e1856dc229fdfc5e34d0e8e98f9dc7a903cce3b995fc65. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN82013559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2905ab680b17cebf8f13377cc9720c6cc669b1c1380253ab1447577a5a33954d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN32134791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c44cdf0961e3b6ec9078b6f1a19e391d8920b7e591c20ea71e63e6991dc815d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZAJT21700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd386ed60cc5adb6a8ae36d82d24c1940d08a8863a3be62b2393eee3ccde5e7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZAJT21700078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140fc115a57133a862ded397d2e7618f52c87ddc1cfcfb9b45a6c4dc2ea23beb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZAJT21700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe373c882795c022b47e0259326107da9116d576c38f686babf17c932a32047cb. 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/ZAJT21700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf908edd989223d5d82d935bc7097ce081fa219cc57f154d4be64d1939a16d0fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAGL2230272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca67a1615aba0eb2ad8c86af0dc3d5613266c014ae68635d44b409ba720c22b2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAGL2230353.