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 0xdbb54df862719d67cc6e39d59aa750728f21c39729642cd3518dcfa52ecdd08d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28b2cd68-87fa-45c9-bd08-a8b03c77f59f.json and https://artists.proofprofile.net/proofs/artist/28b2cd68-87fa-45c9-bd08-a8b03c77f59f.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 0x44cf51fc1c4d4449b57ee146a3f2c42e92ed5d53e047caf061602d2b5bc1bfc8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBKPL1362802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a60c9b3cddfa0ef66fe6ef69d25561bd61a004a1bcf465b6fbb1fa7a0f0b358. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:21:18Z), 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/GBKPL1362803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc177ca117db264750c951b7297a83c58d4f3d3abb6897ea39845b3ab05e2b7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBKPL1362804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fa4c77a19c473b5999aa9db00f4b596df5d869b7419c622d75a08bd8fd294a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBKPL1362805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69822f4066d6abec737a6eb75e64992990d25f7d6817fdcb299e1a3ce03061cd. 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/GBKPL1369819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fcecad3a86a4329be1f80930d6e5f26cdbc694069c56a8aac11a5bb8d0edf1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBKPL1369820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb511202c06316ff413699b6ba29c71a09b15894c9bfd3da64204ec6625f54218. 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/GBKPL1413248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a40802518528ea9e51bbaef8a48251df349c6abdc7d587e04e07b88868bc8cd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKPL1415297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b885b07fc89a1c9cf2104715c7da6e5dfec7c97597ed639725fbd26ff7fe63b. 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/USAT21502380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b885b07fc89a1c9cf2104715c7da6e5dfec7c97597ed639725fbd26ff7fe63b. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USAT21502380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db674ecb0e2ae22fdd5c6bb73eedda975d3835c8ba0269fafeaebe0f90cdcc8. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USAT21502382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1ee5155fd8a88829def97a2483804b59b74f8441a7a2dd40edb68ab9d5e2a7. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:22:09Z), 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/USAT21502383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14befe826a18f85e1446a3df89ff153cab0529ba8a205c1d6fe6afd1154ab22d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USAT21502384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cb9940779cd629fa25fc7a711cf356e90b689596323c392ec5511a58c68aeb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLRD51509352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84660bbf3069994ce68f8114f10fd8b883cc83cb07f98d014c9dc24c12f1fc27. 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/NLRD51509353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11a22276a8b45b2417d2c5c616543a3b459a373ef2597593049d2b955102527. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USAT21602506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e410e80094a14c8a0eaa735fff393bcaffe2e5465c1352f16a65db911f42434. 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/TCACZ1775401.
Mind (feat. Kai) - Basecamp & Mark Johns Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3143e1ccf5c8e4d7486dd41f768545b38cb1caaf615563495f4f244a3659bbe8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USAT21602231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23125fb09f0ac022f7b241f02fef0ac0bd4ed3fd82a00bea8ef22b16188f701e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USUG11701646.