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 0xc675b2039655ad898b5ac1071c4c8ac25920eb3cda131ccff4a729b78716732c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a1a3d9a-ae87-4b0d-809e-c61aa539690f.json and https://artists.proofprofile.net/proofs/artist/3a1a3d9a-ae87-4b0d-809e-c61aa539690f.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 0x0f4a5e3b9b9c6e5fd54054b0c1f26efef9c341a4197bae306485ae89b00a24e1. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:11:56Z), 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/TCAHR2304157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb744450c0fcc5b3e99a4e2a9080f4e0b343cfa7810599840192a16bab485ca69. 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/TCAHR2304173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5964c2ff22ae79bbe5c0673d2e0692c9080115e1832df6c97262b52b0511bc4c. 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/TCAHR2304178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dde852b4172b02256c63310cda54e14f34f85233b53c45d2e3e747cb86431bb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAHR2304181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa5efcc60b087d3518f392d5627d6b2cdca523ae7a977ff2cb3260d6541659b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAHR2304213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474323bf23cb79ed2b6e636a440d8efc22b2d6cc16c90b424a1d0946ab779438. 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/TCAHR2304223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05741ea33f058d30064fdfe106671a75cd1570bdc7e4e44df5df8b9ebc21ac0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAHR2336950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7f72b1f92dfdb727703ebb97ec4f7a280bcbb7c79b29fac7b73ffc935dbf7f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAHR2336967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609bf6d4ef7b07c26fe9b1c27a9dbff43f056c8929ac0bc3fadd06caeff48307. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAHR2390283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71ea310b6d49e3eb8360330f5f29475e733fd91dc9d6e4d64b401b82692b739. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAHR2390289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4a7f7a2fc3f7cdd8b64a5ed129839e84bfbf0c93393b572c50ef88e96035ec. 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/TCAHR2390313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b5ef5785d7e8131fb3dc3ec0c2bae6dd09162e043c6966da78bc0da9d358d8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAHR2390337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b19b34cb521dd5149c4ff303f81ae10cc895ab2f2cac98b0143f48ab50e1de. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:17:48Z), 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/TCAHR2390356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57994cc7cfd06bcab7e9112955debc6837beaaefcfb62de674fb0ad751f0afe. 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/TCAHR2390359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a946aa9f769e8200ba23be8a07b9906f1bc58980c0752d97ba12c8c5498504. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAHS2305352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462c6cc3bd25a876420e3bd74867326dfcd1fb20db7cbce69dc7aa461f76f055. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAHS2305367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eeebe2df774d3d14b06708c2bb57a35f2110e477c4ba43f678c3c8c76c00c3e. 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/TCAHS2305390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00643ee37bcbedd6c81042535de20a729308d2afb389b4bc998222a9d4f971b9. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/TCAHS2305396.