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 0x2000f06c17000281aa1cfd54bc9d70a243ecac2b8c519fcce9a2e76b8440aacb. 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/11097307-2bfa-46dc-9be9-f1b657c4a1e4.json and https://artists.proofprofile.net/proofs/artist/11097307-2bfa-46dc-9be9-f1b657c4a1e4.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 0x158fc0ec7c3e7cf544f2ace8ae743393515ba942732c260a28e4d55f62b1ecee. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZK6F2457660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd046e12222a097b73b663ce5c4dd7167a3cd6e197d63a051605ef66df39e588f. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/HTTPS5652264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0eaeabd0510a2072b4ae8c723e06092e3cd113026d49ea53fd58a979db1276. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZK6F2457661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8016f666070a15331e454efa8d265bb79f025695b8fb4fe14b8e552f452f0d8b. 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/QZK6N2488618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe073a93ba6a541d6871eafcccabf85d9cc660e20da5d6bdeb3349467661f1c1e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZK6F2457664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30578ccc8ce9f7375b064fd4d03ff4f2e651731cdb48173be2c0a867a2cc0bda. 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/QZK6F2456269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131b1e8e2d78789152ffddb52a18fef9dd22c88c0c3ab1f00c6a9386648e58e6. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZK6F2456274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cf44e9907fde23ce7dbc99739de815e5126a98ae090b29628d93376eff668a. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZK6F2457665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012584cbaeeaa363b8698184906e78fd23b2ea5da3fe1849e40d41c40dca8666. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:42:02Z), 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/QZK6F2456268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d99ddecd150f8bb3c1cfe4253f7afc7b42388d34e17056a178133622940deb. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZK6F2457657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50533f184fd233b247fe2bd84fff952d32ffcb0c3fcdaf4e756893e48d6f6bb5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:34:31Z), 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/QZK6N2488938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a45550425e4102395ab283c5f5668ed58aad320e4e8958815a1a4347d57ce3. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZK6F2456272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c982625211dc75bdbd290cb3c9ff0fdf78585efc4f7947d11cdee2e0658a10. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZK6F2456271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d2b59392d33001415f63fec0fc3b17260afa4a77a68743be6b18d01073ec15. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZK6F2457667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8898bf2eb226fe77b5f80d00eee6645cb8b931268c85337041541a976062974d. 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/QZK6F2456273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852eafd3c603de24a4bd3fc578a31c1cda68a4b8fd24936093ddac4207798a5a. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZK6F2456276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95f5d3983133b0ea0f960b6068f5c956f4eacd5f2c5a59deed5a4efeb1d9084. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:35:12Z), 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/QZK6F2456266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bd1a70774ea5096b6d3247ed6e19ca8950da433389036c7c8cf871555b2296. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZK6F2456267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99007347c07d02d405d9841d2b43b41bb64f7f0bf02d134091299bffddb42428. 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/QZK6F2456275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b4a6819ddc089af5a1108a705db385f39b3734c1a4484014bfae4a814528dd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:26:39Z), 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/QZW9K2443653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac520241b53bc1c2662f3faa8ce3a1f9d5ae3a673bcda7e7e58b9c34b630b8d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:34:41Z), 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/QZW9K2443656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83345dac834951bc54dc64217497f815596978fecf7bb1ed3651abb692684d58. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZW9K2443677.