thumb|right|Norman Langen, "Mallorca Opening 2011", Megapark, Mallorca thumb|right|Norman Langen in Santa Ponsa, Mallorca Norman Langen (born 7 March 1985 in Bardenberg, Germany) is a German singer
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 0x24389567e57564d7e97db578859a25c277f615a5ed6cdafea6df9ad19ebd73be. 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/eb99729e-6e3a-4956-ae6b-13abe818be7c.json and https://artists.proofprofile.net/proofs/artist/eb99729e-6e3a-4956-ae6b-13abe818be7c.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 0x0a3d948ee9ad8c8557d07c021aa949b23a0fe6436267a9f84b6bc59e582e15a2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEUM71101977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9095e1bdd726203be291235ee34d3e2671ac508e65cd3325a281f84534dd691. 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/DEUM71201992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7f4825bec520e6fd42c18aee113e3a0d39e2c70f32899e18f907c8c56ad46b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEA811400597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047d9cecfc9794f66c45ffc9f4a2df66f70afafa9ef0443bc0e9cffe2f7f7cff. 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/DEA811500124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7914e67ea6b680761c5f96dd0801028a71f1dde91f3cb61545691b726b6c6e59. 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/DEA811500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec120bd1aaae664863b607c64a55ecccc50aa34ddf3cf88675bce3c6c51ef6d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:24:39Z), 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/DEA811500125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3d948ee9ad8c8557d07c021aa949b23a0fe6436267a9f84b6bc59e582e15a2. 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/DEUM71101977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e5adfc446cf46e2bbb6ac8739607d1493e6b97262fb720387bed2fe999c170. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:58Z), 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/DEQS91600392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b3ce503f223a023739eb00e5177eabbdff6e51736ce27171d29bf1a609c3cf. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEQS91600446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f88fb990e59770578d75766ceb52382179e312a1cffd52fe164e857ec47ed30. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEQS91600449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c51a1dd817f7b36cd6a64709c3cd0a7ca74c743979d2ede1cfb7b264f3a24f. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DEQS91600451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc062f59284c638a0aee43ce7be4f46a77b8982c9469b424757da86dfa33b0b00. 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/DEQS91900099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914693031b8ec679644b7e416694356edf0d04af4306aa2dd9cf5bd0934a27a9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEQS91800375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7881d39578f83f8f9eb80103912b6c0c11ac06763d8cf048ba4fd877d4d76a79. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEQS91900120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bd54a271d71f2ccd4d8e952bf37e2fa8fd88ac16fb77e73090bde16f77d5f1. 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/DEQS91900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85ed71120018e4f6e20635928657ab0423a6df308a7a20125626d8e46da7aa5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEQS91900125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914693031b8ec679644b7e416694356edf0d04af4306aa2dd9cf5bd0934a27a9. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:23:12Z), 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/DEQS91800375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9cda4dc98e7cdbf08d96b0e5cb9fa02c66b68ae6d1213551e4de427620d6fd. 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/DEQS91900123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d45879629485f689811bf8f4933a0b9056e1f0045bd59449719a080f1c4e52. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEQS91900124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92fb7627a52f4b308d7b36d220f098928c01cd362370fe6ef1792bd87de2aef. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEQS91900629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e70df952cf675e6cddaba6f8bd945b4b6e7f5df0f8ab685532766685041067. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEQS92000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e70df952cf675e6cddaba6f8bd945b4b6e7f5df0f8ab685532766685041067. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:11:03Z), 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/DEQS92000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91608052793b68b0b6027dd0f6b816c08b77b3c8ae96f4d1484c707718afa484. 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/DEQS91900740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce33fa8f3ad54c6a5527fe86d4e9b063d1418dcc8ff4c57b63bb3a86ee55d02d. 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/DEQS92001429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bbe5e753ccf4a72f03ba3cbbb6dff0af0ec29afc582f4f50f69fd2d39945a5. 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/DEQS92101140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bbe5e753ccf4a72f03ba3cbbb6dff0af0ec29afc582f4f50f69fd2d39945a5. 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/DEQS92101140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c97569f018c8886f777e063e579144d452e586b63293b9365cfe64b23ff5d9. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/DEQS92100733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d773b46ca200075be6e709cd9b6168ccba393c9f5f8808be1bee50b883fa852. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:22:26Z), 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/DEPI82401698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc062f59284c638a0aee43ce7be4f46a77b8982c9469b424757da86dfa33b0b00. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEQS91900099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047d9cecfc9794f66c45ffc9f4a2df66f70afafa9ef0443bc0e9cffe2f7f7cff. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEA811500124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1d3ddbc36a0994183aaf2580399afb03b96be66fa5d256331f2ae642858e32. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEUM72406887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b87b8df4cba104bb36480a32e701ac023ac3d7ef725f0ee2e1a49298fd1525a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEQS91900127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7243922d720ed64b651936bfd8aedf050f40174c74b4f5d6d58df7bb2fc2ad0c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEYU82000040.