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 0x34a86281f8477a06a6528dd451c9a923cc908e3d06c5ec827700911fe2ec8af4. 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/e1fde81c-79d4-4874-892b-fbbad313c27e.json and https://artists.proofprofile.net/proofs/artist/e1fde81c-79d4-4874-892b-fbbad313c27e.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 0x891f59957754917c9b2df13231f00aa9532561f920c98c97a9995cf1ef4840f3. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/DEAR41184619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90eb03d182208f556f73625c4cf0c812f73b62244ea34b958f9e34f5b1ffd3f4. 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/DEAR41610975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d0a6c2aecf4248c421e96f9f2c1c2565c0b3e7a1d5c4103ffcdda96be61961. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/DEAR41611000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe10ab1824aade1be6d76fc5a05c2c2104f13b214126ec8b6c7c29063bedd80. 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/DEAR41611031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c51b07f6b51e8ca265c421d07fea63ce3e08ce0e87810bbde241c9eef0b43a6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEAR41611033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411d01af96d8e7315265bd3808aa3bf06e774ecf7a70bf2f75e2c8c42d4a2e6e. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/DEAR41799217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8913d635116ae12e058c1e30eb00f799c2dbffd8fd3478abb35a869c3e2867. 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/DEAR41762399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5026efc031455327b477ebf6da539e4bac4da49cf0b7ce26d59719e5f697cbc. 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/DEAR42288621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c64b28ee08043c2230430339b992ebbf14ecf1faaec9079f9181eefd064d52f. 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/DEAR42230249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb2fcd78b2c6f1f1a54d9489b294ff08901f3b876784434902461975fa80eb1. 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/DEAR42210344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecc2307fd25bdf01eac75dd574bf2c311d0674db256c425fb4ff82aa51300d4. 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/DEAR42290875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe071f5558cf1ec1935ed08ac1c6e10f1703ad1b74d03583c0990b86b68e15bac. 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/DEAR42238241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf5c5297b033d696a144f8091a2805b93924f285cf9e5ae1a4f3385036df288. 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/DEAR42210915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda71d9bf99058f739d1ba591ae0003176fcb566bee3333ccaecd3fe8f457ecff. 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/DEAR42212438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d5c2c705188339b270952638589e1c33d5c535f34f1c678e2376915c7ff101. 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/DEAR42223705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefd6046627cb53ca0de7af806c1e6ee392230bcebff3a6189d1807930ac8a8d. 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/DEAR42269451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390ddd92fd0bb6907a37b6c8f0fcf006b3922e836afa6c9b4846710fa956cea1. 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/CA5KR2466775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2e4ef7c588b979c370044a5180e6ec0dc8db1560db71e5e9166b32773d47b4. 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/GBKQU1379055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd397cec85def74e1261d849213e9adc8627fc040445e2c4796cf9cd105cc1a05. 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/GBLV61925037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee72e717f925a3816a59e6f3a51111538d0ef938ebef5a059ad8a6ebbc5c19e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:31:20Z), 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/DEZN82365868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926e58aab491e0f66381ca7153111e1c58330a30ae0f740a2e8c715347fba76d. 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/DEZN82365931.