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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5924720f5e807ccf48f6eb8521c06462d5c27c523fef5d3c578ad21fc8aabb50. 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/a0215efe-6653-461f-afbe-a1287267142f.json and https://artists.proofprofile.net/proofs/artist/a0215efe-6653-461f-afbe-a1287267142f.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd73877d2e7d9ec57934be2877669c45f99036d8cc5af7d8b419121f8a5c3c1. 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/QZES92050513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dea32d514987ff639eb09e70f3e60f432ce3944479e766eea76e291ba69feb6. 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/QZES92047231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55e757f4c80bee6d2fe8942041765c323a830d29bddaceca263ef858372d863. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZES92050507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583a8583503f41770dff2040de4b4f6720b79057d90d1198415dcc28a7eecdda. 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/QZES92049748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569a4d81708b66c334323572f5ec16ef84d32248bf9695f7cd03bb6f5ee791e3. 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/QZES92050523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373e60026e22dc0bb7f1333162e2977eab624a87754fa510173e1efdc9475aaf. 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/QZES92050517.
M3allem El Madeena (feat. Xena ElShazlii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420208787ad65d184a5e740ba2e6862e64d78d1b1606333318058db9891d2295. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZHN52066558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfd9f7d97ae4d0a9d483299a41a801d3479df4c214ebf53adfe4ecce3a64e38. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN42009075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c17f76d8d5de9955f7405c4fab18c374f6b2e277392c2c9885e7a523b005106. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHN62049442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6d3dbc9e2a7197d1779f44bea9c33e0e7731dba48b11613062bb6ebab8b307. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZ4UU2201055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d5cb4e3be2facf86abf81bcf9673ac9f43807484b1ab96ef8151163566b96d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZ4UU2201060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed54ba198b31f0801e67fa55580f032125e8e7e6f10235ed60c9229011879db8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZ4UU2001656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614dc5e15d4c5b4ad70313707b2f1407490e92ed982d5c78c2ea5c31e1a3d655. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/EGA252013050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf1347e44a06e7f720ad2e21b114cc8591d26d6f77dac44215046f11cb372c3. 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/QZ4UU2100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4761f65d2d3397074c8f3715229d4fd3abc83372544abc28702b5b867f7be8. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZ4UU2001631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491864970a9dad153c2c1d0de4cfbe10145371c8201a2210b449ca2e386ba4d0. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZ4UU2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074f497cfbcd8073d4043c09f3dd5d0636b194123cb5d3764a967b923f41b62f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ4UU2100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8aa65916579b2144d7ff6f2fbe0749e5ffa19b73b184950a42b48dd72e6463. 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/USUYG1470325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88dceef003c40fe1bb5085feef47331b8abf057c80aa5345afbfae29ba40b15. 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/EGA1K2303062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88dceef003c40fe1bb5085feef47331b8abf057c80aa5345afbfae29ba40b15. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/EGA1K2303062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95cf3f2002744ad84eceb40b1d86e0481ad25f29c4abb6d7a42abac672971f1. 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/EGA1K2400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f09a47f62789a132478db65726872ab306f03f8b2d0a4ebd5711d78baff165. 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/EGA1K2400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3d266ef4f7a589607119b2357c7e083bee34b2a314cac142833f1d2841bdbc. 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/EGA1K2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f09a47f62789a132478db65726872ab306f03f8b2d0a4ebd5711d78baff165. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/EGA1K2400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cadc5a3aa52b8a13acdd0e4b067eb9a3d1f01b0d3b1383cbf61f91640cf8e4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/EGA1K2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bbab1ae6b6dabda8a4e01a8bda872cfe96ccf5791355cc53d88fc5beee0ff2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/EGA1K2400972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa95746e2bc18c436e34bd32787cfdfc76b1200c4455a78d47a64f04c0c897a9. 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/EGA1K2402976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553081fd115ed9d77e1290c57e3b0451e40faad1163416b21080493abd822d9d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/EGA1K2500392.