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 0x0b88282fdd9f9681dd598956ab24f5ba298548e529ae59b86f92b7079b4b08ff. 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/28a471bf-6a54-4a3c-90b2-e05630deb88b.json and https://artists.proofprofile.net/proofs/artist/28a471bf-6a54-4a3c-90b2-e05630deb88b.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 0x0335eccc325b46c6d5bce3cdcdfd3f314a9ccbd5cbee38cddab226e4cb954902. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZ4JJ1647639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9e9b7d3b54c0bbd5ecbd4828400501fffe82fa9db41487299faafbea9aba3d. 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/QZ4JJ1647640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743636e7f6a6ff7d5f77f5192b7558d865821f7617552098e69fc66a8d397015. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZ4JJ1647641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6169211ced7403b90c06c77e8770a3517d4c50b8367a9435ca21c31c4191a154. 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/QZ4JJ1647642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ead3081f047cf47fb8173f21f51c84233651ae7fc6172bdb68c504ec330682. 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/QZ4JJ1647643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2d94a728f3c8a42af91a54589a4b59e3b569052355e2c7a7248353fc854a43. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ4JJ1637276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0b0127184c848aabc2d51099b7a43a875a9fcbc209311316c7f9299b7109ad. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM4DW1550692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44075b03e5d304a3e6bbfd6ef9b0a718d17b9fa29a9166a2f63cc12b3a998667. 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/QM4DW1550693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8c0766da2cfb11ed7b4e353d8b85ba0b3f4e7006148eb3914423715f686494. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM4DW1550694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5795ae42a10ee2f8bd17eac67528ea8fa42351d3a1fede954f917b1fcc228660. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ4JJ1784731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b3615d7cf36e334d9c2962389c44a527217ee0ca5d404ac17cb1eb80da6d61. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ4JJ1784734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d6c5a2398a0be284c0a6c53005a6b4b6b0266a3e274529bc6fd4a71ed7917d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZ4JJ1784735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6936e5ed3dd828ed97301901381aef28a5777ef849a257b083dc3d3e9d15de25. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/SE6QE2179077.
Blood Whispers - 2022 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0974e4ccd4f27bde0ad52d1d4b50fee940a9a147eab7e855a5f7db6fad791f7e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:45Z), 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/SE6QE2179078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a0f443254e408cde295114e7197b5f14e477e50921e367d9a365e9caa9b249. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:06:14Z), 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/SE6QE2179079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ced47d00ec0f8e24289dec4f157a159642f6732f56b4554b83bff6503a965ed. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6QE2179080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a06240e990d5d783c73161c33b6c5172196bc8a7a83de9bc48863ebf601968. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:01:13Z), 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/DGA052269118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bf5e1a927d2d94f78eb1af1272f20cfae48ae3a2613160e55ea406b23e3c33. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DGA052269121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2d5f6522404e88cc0817718da936b7dbed98d6ef9fe6c72afc1ca92e633d2b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:41:17Z), 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/DGA052269122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28949df2b2fc0f9e9c8f3907515ba06e6997edd97074b9e3873407ea87792694. 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/TCACN1682916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545b68587676e78550acf56c48ae1d5b09b8e29095b44f26fad0f0f5fe288a38. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZ4JJ1915267.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch