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 0x179bdadb606be4625ad36ddac0e1955770ccfb4f37a2f3ac98f5faabbbe5c725. 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/192867ed-f3ef-4570-8373-b4381ebc925e.json and https://artists.proofprofile.net/proofs/artist/192867ed-f3ef-4570-8373-b4381ebc925e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Attack on Titan Brazil Eren Phonk Reaction
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 0xb8ca80a2cd377a960aa99efeb8cc83fd5bc3db5caf41e09d70d248824af3a1d6. 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/QZWFE2381444.
Jingle Bell with Freddy Fazbear and Gawr Gura
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c35885d1735d1a6febef2d5d5062a48dacaf8f1cf078b429fccf36327700f0. 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/FR96X2414170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71cad4081821beef4df4284f50ca70635332fa89acd99c2c3c05967f39c61d8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FRX282429990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889e426d66afa1f706b39c1b1991e5314364a76137ebc35ab01452f95b450ca7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRX282493633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874d6c93e883c2045903e9d5a58bdf015caf48a334cc4929f7d1589c8494254f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX282493634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04009b164cd9d180cf42a527446327d1f225c519caeb2867f313d2049bc77b6e. 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/QM6N22428949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb92e123deb94486bce2e74f5563be89cfca180c9e9d9441426032e19fabda34. 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/QZWFF2421539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efd798c2342814c6bc15809ad26b079d860b16a0c5f6a7df61bd89cd1fcac0a. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QZWFR2451731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b37f9fa777ee224f7e626c5f38e6e9c23e83d942155fda588883aab8a028dbf. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZWFX2476345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4565bfe115f9d84328b1561dc1eb73a3a9b3bf6e8c6a507b91dc1691802ee67. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6H2587108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6578999b924dcda86c70d2b99a5a3e7e33ba2c436b9d2c74c427c066f97192ae. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZK6H2587109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52a82605874c4ff1cf762168871b3b56c83cfff975fe91f81b2004b91f05f93. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZK6H2587110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67abcebef7fe773080357eafd1444cbdb346f67d0c9bf648f92538de08d859c9. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:11:59Z), 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/QZNWW2592186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88f6f2e41c5ccdb07af96cc64d402fb46dbd7f1d50410d2c457aab11d4673c1. 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/QZPLR2570490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe1922ddf959d99b44c3b970b1430c7f11e427d836c3159b43d22175c4e46a8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAU2502937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d7061e1b7b649a38ff14ac98a49ed7c1ba4e90f34dc8a7d49171ffb2a00dce. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:16Z), 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/QZTB42587003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76543da1d0b3516356189ff920e84a53fd31a47e4ceae14b948793fc138774d6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWFF2511919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c1fdf4ff02f842842d50f8f78a9b09227ff40bf7f3e0caf39af7065f32566a. 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/QZZ782576498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3920e7090b99049f878fc50f0ff1c57e500cc1d94b7a6b59eaf3d91f35d779c1. 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/QT3F22525275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8ccad49d237f87128891dbe361cb68f4a57802f75ac453de2a29731e4a4d92. 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/QT3F22525276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c74cb964890d0babe9167deb3fafaa2c32202fc537f36d41f2bdb0ed00fd1f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT3F92558852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2bb2e19d90840677bcc34173afeefc7c5ff2a6cdb50dfc0fdd9d82b9714aba. 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/QT3FE2584914.