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 0x3282cdf4c3d38efedf3a60939a58f48e98058a192221d808b6200fdfb665caae. 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/733138cf-a224-47fa-ab9c-d99e87879270.json and https://artists.proofprofile.net/proofs/artist/733138cf-a224-47fa-ab9c-d99e87879270.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 0x30df96720952fda24e842cca1d6661b91217e6975257c1f51b667676c88b8c20. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UYAS12300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c707ed0b759dd0d0d5dba4baf3182f230ab8818f769fa32449f34c98c0ff5dc. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/ES71G2318776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd53f519d4e03d847048f66eb75a09794ba358e0b8048d93e408d1ea2d70bbb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA092202700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6f09df5cfda8090a91ceb5e3ab971c3961946facc345a90b45aa8be7ff4499. 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/ES64E2470988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a9ae69d846be6cdc3eb81901b5debc514f56b46cc0cc87c5332046c7194364. 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/ES75E2204315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6600203f223a321183a3ea5928c9e56f29902cd14d2bc568f1e856e72d3163f2. 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/BK4DA2319132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a1fd61af6f90f44d91ffddf11284bc42e179946c2c2d219650e14dd6458466. 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/ESA092405337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1a476644fefba9d3c9c62b1134c90ae8d79e26ed30c49895d1a54bd4007366. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAIG2453694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb946fb5e7b26ff921c7a87e46c3a9035f1701e062d969f2bb41af453541355aa. 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/BK4DA2535644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b3b55744d6660d37e72844cf724cb5398e8df56bf0579b4d388138a0f63058. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BK4DA2535645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95542b9f96649c85ed3a370f8061928517ee2b75205954a1d50a0bfdebeda447. 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/BK4DA2523922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b23b0cc60c9e51602db4e814f42daeef43a39a5eed58386abe8ff43fcf30547. 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/QM6P42525766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676a5e4e63728fa9e1004eee18d9377003b618cc21225fbec175f20774fc3a77. 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/BK4DA2515015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16630083325bfeabaffd3b49f8d29c5cbc08e1ff7cf3e20a28fc1fa3f7f5bc9. 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/BK4DA2510450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a9718139c3ccb99a4de022b5061d683b79ba987c46cbe194000afabb3efe39. 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/BK4DA2508992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c0f934158da65ed13b5a02767ed97fc384515d5f5d9f1eb071a2beb65af022. 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/QM4TX2500374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f422c882005fd759ef77cfc544febd58f0ffb4c3a3608a0411f86dc74a6a460. 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/QZW9M2449750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfde3527107df4b3ff3719863ac67e0f6bc2ac859ba437797c5fb3c741e420c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BK4DA2462993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11283ed9941fa07407dea300769033d55edfe1362258f79c27e18dfd97246ba8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMDA72406546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd687bac7728156a0c832fdc41e1df79c2a2e498e4bd5bda7fdfcb5c23a5dcf93. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2437348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437cd95657d723565f83c42eb62efa37608e81490feaa9b028ff593e0028c87c. 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/UYB282490921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa95e579dacf73adaae4d3892401a87d1682c2bb791ffd3b4bc8244e636d0340. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJZ2376512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf6f5e2834d10f14892d80f0a3a5c04f48a85515e774d356faf332b0fb4c33a. 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/BK4DA2314206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e83c3520481674fdf3d906561b31ac0b62088baefca3ab1ac3de8c4f794dbaf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ESA092310625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe410e5a0a40240161e6bbee8dafb003e7c7f2d8fc82fbb220ed5b586c8d4fc5a. 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/ESA012285750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2421f95a7d0b2a2b2e9cd4ee4523c319409fb121bd37520cba326c538d5c2904. 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/ESA011549309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e88728a72596267b35bc5a4584f2eedbb44efc168c98614e9cd4c4ac7bf51a1. 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/ES98D1800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bffeef4cedef094d08b1cb28fb849c1c770e040d4b8a596edb3849fe800d6b0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5152200444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8044fe9ffb6a5b3448d40d63d8b2238928ca3d7204eb0c2604140ac1a23793df. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZZOPM2233550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e28eecd5326816ba30fb4be6a58bfebedc9911faf76efbb582bf0ada08716f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6N22416560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0280aa9bfeadeb2def18ca6de1ea88e2c0ed1aaec740a5aad1443cfe6f30137. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GX3Q92506786.