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 0x28a61dc0a35a51218ae0d82b6eb07afac0ded353ffe3547a0f72049e75dda0e4. 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/dbad4762-1985-4a40-a1a5-6608fee317fc.json and https://artists.proofprofile.net/proofs/artist/dbad4762-1985-4a40-a1a5-6608fee317fc.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 0xf7a845a3a974a86bd8dfcf99723226e3ac63306b992aaf56785bead0a773bb27. 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/USA2B1801107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55fb76430f87b6fc24b8b517cd2a5dfe80ef8206cfffae06bb9bb83d016561f. 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/USA2B1801123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa57b10f9e18c52cde5aa6701431e4608a388962999b549477a16d7fae42ee51. 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/US3JJ2200873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e2043e57f4f194ef478d0445834a60f85a982c593da19cef1b6dc6f9ebe3de. 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/US3JJ2200874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46026c771d4ab5d1eda58aac524ce9a877c46e3e0c1ca6a7251769b4e1ae5411. 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/US3JJ2200875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4791d435cab387af211546b3f5b6ee5ab59dad07970d21caa8cea80b31e4a923. 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/US3JJ2200876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baf51a98f30e9cf68524932d014f52919843e4ba2978eb0247e1d8462ae1247. 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/US3JJ2200878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d53231af7e8940c021d304c108171a9a609edf6d4861af2c5e621d96a8b2c7. 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/US3JJ2200880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3e5e5125f8233d5d42e7ff9cc69cec50db12812a72542a0f00a45f9f512d8b. 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/US3JJ1900470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc85575d7bff5db4c99bdd136c4250c55a97c7d21dc22f815b75b21b6faeafa. 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/US3JJ1900473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdaf211b3a9635a3b88857ec9f818eff0aa07359bc26748b46f645de4dc2507. 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/US3JJ1900474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16914e5eedd438f8c5437d0035965de5899b12d4496d6c38926af04b75186204. 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/QM6MZ1837684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a68556317728339d806c06c134784d63599e97c75bbfa94fc573f6b445d7a96. 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/QM6MZ1837685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7621e5a2c584b2e4735bb7ea98ff85ada22d0d50cde2037ece2e994f5b267f4. 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/QM6MZ1837686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fa26bad3cd9a038bd00f3b4156f36218275da06b2565e282f94dcea4c6407b. 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/QM6MZ1837687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda470ec952663118cba225d5764bb0e7e08da90f657dbd0f0140d92c09118667. 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/QM6MZ1837688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb261898025c3cede287fd97ff07d435cb4a69340ff270f34ebc333e37355bdb4. 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/QM6MZ1837689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7642cc65c93a4cf0a00ca853176edaac1b97ec7d22e4afa856b4635e35a1e7eb. 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/QM6MZ1837690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18686bb8a3026477b1465c9872bc291334f951e72a08569f88330a2564bb46c. 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/QM6MZ1837691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950641bfe12b409a1e815ba3daebc71749a1372ea192dde0b72fd1601f6409ff. 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/QM6MZ1837692.
Catch and Release (Going Steady Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe197ea0d0ddc12e629c2aea8804fedc018a6b4fcea7803d914ccc74d1d16e389. 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/USV291428546.