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 0xc2c1b05453792a02ddb98a105af402e41cfed742121d73acdcd68519198fddb5. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69d69d65-3c0c-44f5-9e29-7931424a69d7.json and https://artists.proofprofile.net/proofs/artist/69d69d65-3c0c-44f5-9e29-7931424a69d7.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 0x2d1b73f73ee16a63121a1c25cde0a5bbc47fd222fd2e8b0fce3938b050db8e0f. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/FR0Z50088761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f401bef01632260fad68738aa930a33dbbaddb7abc1fc00c9a8f7d208fa2bcf. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FR0Z50088762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11937750526f0a3d6765eb63342ed27a38e6bce3c2029050eb5d7d62ad76d49. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR0Z50089279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc31296d3517b7e037e69351fc2606cee054a4542104afeed5ee7516db4a0eef. 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/FR0Z50089278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0ba5423313f6fea73181064bf599926a18948d27b69bcf9b32f799e25ec046. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/FR0Z50089277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086704fd72c2944fb1f71463a67291dd93ddcb3d4b32043501437d4af63ca680. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/FR0Z50089282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91e0560b3ff341f4531225dac61095a3b149b116acbe0538bd92e01711b26bc. 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/FR0Z50089281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13530e9c0eda55f5228bc4c6a882f37e5e0b0cb1673427fecc876118bda92f61. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:33:47Z), 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/FR0Z50089280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe928a13a818872abca6b3d9ba886c03705c2332bbee230d8bc63e543ab41614c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR0Z50095059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4267aaa015f430038dbb36d599d75f2f753e99c73f1fecc602491da87a75f925. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/FR0Z50102827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73bba1c4f01f01e015aa2a09b67e6e8bac8a3b23da5dc9c5fcd95bb50c30e3d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FR0Z50109417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1565e8da64bb6573d5bb3be46d29661f95aa827cab79075fb3f434210b5b3d. 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/FR0Z50113225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b840c436964d55c4f07f1646e372283412f853ee78b15d3c79c12ebc79ef8bd. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FR0Z50117373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26666f1302c00660585c88032b2ac132136886ce329637e364e6681a64a3345d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/FR0Z50118029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d3c761df9e118b4d49b1d9f8c9b447ffa07ae29b3e17616caee694f3b4fecb. 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/FR0Z50119127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe928a13a818872abca6b3d9ba886c03705c2332bbee230d8bc63e543ab41614c. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/FR0Z50095059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf32e13b0803a75c9af1891f527d6fe1cfcaf8a65ded32ccadb665d08008cee. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FR0Z50119131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59443da14f389e40082aad0cb5cc931d3b24700171a11725d10077f506de3a11. 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/FR0Z50119130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1565e8da64bb6573d5bb3be46d29661f95aa827cab79075fb3f434210b5b3d. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/FR0Z50113225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e98693fa49750b4a9431f5e185d81e0a69f69a2fcdf40c8819af1f71f071b1. 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/FR0Z50119132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88fad865b6de4916b15099aecdfcf621d924e1a0c91cbe9d1d4fdc3adec2032. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/FR0Z50119133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74500eb8fcd0c81e034e93bb4bd24e179f0bfa7db01b372c88bc443f15100760. 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/FR0Z50119134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a46a2c56215c5df577ff159293549b6852395bf298238be9a8a494b89b95a7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR0Z50119136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e125d2e1d7582dc2aa1cd7f6ebb57f780fd43b107aac09fe401bc15345a8b5. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/FR0Z50107769.