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 0xd286ff1a42a8abd08463c0facea7c758f1e6d2dc23943a423e6971d07a222e49. 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/4452961f-3dac-4402-bc13-a2341c5a50c8.json and https://artists.proofprofile.net/proofs/artist/4452961f-3dac-4402-bc13-a2341c5a50c8.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 0x3f7a27900f17631b45880b89e6519c3b547d4320651ea9d783b1568be0aedbae. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/ESA122483425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf72455db85eaa9acaaaa9fabce968b4f198900fe89fb75c3ceb3e5762fd8c8b. 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/TCAHS2362019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75bda30ff40dab1738ce1fd5e3a7ef8767cca4d53b1b952943b551e6c8ce23b. 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/TCAHX2418806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13028d07877d1365db46142cc160b7575fc4a39fe78e68350ee58bbdd4f2287. 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/AUGBT2318820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b4183780f8526d9191b2a64e03bf9fd7ac994bc5cec253e12fdb41041f3ef0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFF2318468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bed8670f5c0bfad231c05d2bc4793b298977b6bce2f73135bc41b36894b839. 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/QZGLM2434850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2823bc9393692fdec65f1ded044cd1246991796c7f174a47c59c7cb8fa6694. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZNJW2400243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3762608cea34cdc0c72ab762317f8c55c86b0bb6b0489787ade03985fece402. 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/QZNJX2411814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e1e1ec8dc5eea92c18bc6936ffe2a47cb0b0d767a025c9d2f004b45f01cac8. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZWFF2313011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f8ed88531e64cb10046c9969182a145a3ed5fad6517b7034e627ec6d991c18. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNJW2417700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65674179da4bf844432eeabf46f10ad246eb27e91a5f77a4921c7a4716881fdd. 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/QZNJY2442119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954b2dacf3c29bfb24a27e51e8fd56e7c7e6215c0f78d2c1c8e508137226ff4f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTPX2430235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b13150c407596eac25e512bba9aab7117672a540bc204d6a61c1676bf78ae01. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZNJV2473088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb83e1e7e8c5ce92b66ad79921ce25d5b071db1b7d10da5cfe63e4fa58851bcd. 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/ESA012560128.