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 0x082fdc9465cf71a22df39ab666e51d8bcd64733c94d7b0072f8632c0c784b591. 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/d653332d-3b4a-4f1c-a69b-d5b02d049a47.json and https://artists.proofprofile.net/proofs/artist/d653332d-3b4a-4f1c-a69b-d5b02d049a47.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 0x6c302f17e305666b0ca56989fc1eb574e6f1f1f70daacbd6b1442a83768d1950. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXF9Q2403413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b8e20a01882d4f8c69434d8105e0c521849949f967cc62d1869f02e464eb0e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:54:15Z), 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/GXF9Q2403414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb479898d2e0b49016a734179be5a39db54576b1b75e08354337ce3550b96cc4f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GXF9Q2403415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f64075f38efbc170980ce61f80a5b554a6935cbda1a75d45f204035539ce433. 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/GXF9Q2403416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd738f7d9052d6a73753eea03f2b8c4eb302a4c80101cdcf9171b5889bac28f82. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GXF9Q2403417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eaa078b1f383263e14a4115a2470f4e7be7ab769507cb6de19cce8a23e1c0db. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXF9Q2403418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0e554e4fdbcd6897e21145be6cc72b6f3d505d9153cb693572924a5813db3f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GXF9Q2403424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df778f57ef5a146b772ab02473b5960cbd1b1a56ff2b4e4deff36479515277e. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXF9Q2403425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396281ae0d780907d1c94a47cc4bb470901ab74e9411b63405cdd2efaecdb2da. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GXF9Q2403426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ccc5710a6b5035c7634cf12315594b462fadd7c9a508ca68df234ba18b8bb1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GXF9Q2417585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970fe72679a381d8db03faac89b6d09f11db8ac1498774291a41a6b8f849af67. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:59:00Z), 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/GXF9Q2417586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4b2b4b4f1755c84e92fdd2a79dfe3172ed305270d6c3198748479136e935b8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GXF9Q2417588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7c647656f338b3e091cde76da9e976346374cd5d53857c5cabea613c7a7368. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXF9Q2417589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae714e4da0a3ebc81519160c7486258768d45dc7e0760b3b5af7badbbfdb4fd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GXF9Q2417594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b267b0b374d89873a6d80c56a83eaf5c97b84f3e16fb6ac381ce1c26f89a9c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXF9Q2417595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5023a906a0b450704be27db34aaf69ccfacc1a7f12eda2a73a9e23fb004233d. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXF9Q2417596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4126d291c9b4e4338ee500fc05b79a0ef94052eb61d77169efd21a26ff15ab. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXF9Q2438878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2ad6608c248eaf80201144ac88788a92dd9723800ff3269587e2c62c8f72d2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GXF9Q2438879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244327bc76ba8536106fd39f3a57ab5ad046fde22b3f909f5b6ef29a189318b9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:06:10Z), 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/GXF9Q2438880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b70183cc75b1512b15e51b8a751d67c6f28317387f2c302c4fab90fae36958. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXF9Q2438881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8500d39eef6fdaf90c54a638bfe1e3f1cfd401a0cc2414d8cdcd99a3627ff2a8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GXF9Q2438882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63848d1ed6b89c75f69de568e0a10b029b87780b0d4a7f344639dadb582f253. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GXF9Q2438883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8e65fcd54dfaad7e69f4fbcaa92db23560c52055a15b7eaae0c7fd4ed58468. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:06:18Z), 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/GXF9Q2438889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b1dccde6ea95616385565ef4e81fe7287f957921e66594445c114c3a564cef. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GXF9Q2438890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880533874fb9a2d6c63622c21198afe7f01524e89992fe29b9ae6aaceefdc2e7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GXF9Q2438891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc540f54da9636a03cefa9bc6db0afaa3190784b43fe1bfdeb74c5630d7102a2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:24:05Z), 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/GXF9Q2452584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad593686a3da626c68166a49ebd2df59f533f239161853573c38ebcb20c422a0. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/GXF9Q2452585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7214f14204115916086215d451bb58c94315231c83253d099ba34276a3276e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GXF9Q2452586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693c36f16e13de2a7e438eb4abdeac5223c4a3495d173c3bd472b630362e6f1b. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GXF9Q2452588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e67dff08d5604cbdcdefb25b3d0c7006b88e7559c0f3ac88b4307730b8bf97. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXF9Q2452589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bac1fca50589d93df7db443dea8604bfdeede39953bcd2308d37152b20861c2. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXF9Q2452590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde468e5789c8524f2588c972f2c4fe4ac8110ea9af6b5e0892414c2ac9fb3285. 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/GXF9Q2452596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143917cf4b5aeeca53bcc8511aa73655a4387d6d49da70a873176c8c4e67b8a8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXF9Q2452597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf473279ca204d335ceb4a3e7098c4c09b30c3f76dbd34ef9217d573a66d7166f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GXF9Q2452598.