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 0x1c0bd88219af5b1c28f4a551140cb00ac22bc23bf26f82a498ee7c042c27b0e0. 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/7fd1e783-9cca-4fa0-99f8-bdda59ff0f70.json and https://artists.proofprofile.net/proofs/artist/7fd1e783-9cca-4fa0-99f8-bdda59ff0f70.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 0x7581743285c10b4189cee7bf9958b732f1116fcb3e362959687573ad50dff910. 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/DGA062450824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d420fdb951c3d66584a11541b51f0bbed44962b3b7cd6fb83ff65ff99919f5. 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/DGA062450825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446c98165a6fff24c8e5dc4dfd6faaf920d8500654662a5da324122532d7b92b. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:34:29Z), 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/DGA062450827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835840317e30d4fac958d2a956d834a9acfcf09c50b3233d1acbde64816bc524. 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/DGA062450829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3a1e54b96309596987a0b5fe0bbe731ca7d484a647d029d1f015e00bd43eb2. 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/DGA062455808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7850e90ebfe8c5a163de6f50c08cfd1fb300db8524a860ea71a583569eae86. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/DGA062455809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed67d8ba263c32e912f40c89f19119546005f01f8906a2a21cbbc07a11b122c. 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/DGA092359293.
Mohamed Allaoua au Zénith de Paris (Live)
Adyoueal ssar tamurt (Rythmes et mélodies de Kabylie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f45be25a4f9dedefc4b41bf5dcca2609b663f5c85d5154a4d2e06099d23b54. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR6V80541290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4281fbfa2715a17008da6c50e06e1d49a26a5c6955633cc6b94bd44ccf4267ee. 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/FR6V80541293.
A Sieqa (Rythmes et mélodies de Kabylie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35f2a54291ccc95d21b31df3b2b2778724303a88d8ee62427be4fc0ceed0d25. 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/FR6V80688052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2774c7bc55a100a03cd6d43b869237af47f1622963470c10de7878db226dd2. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FR6V80688057.
Tasertit les stars (Rythmes et mélodies de Kabylie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe537b34dd912f6b0cd78df3440a167a66d6b3bf8c1771148bef7fddd09da648f. 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/FR6V80688063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90017847d5966b07bc8218a93b7618b88b251a1e8f8ef477df1342ce31fe638b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DGA072365510.
Best of Mohamed Allaoua (Double album remasterisé)
Ayadou Houbed Awi / Cette Chanson Et Pour toi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa9425906a6b32cb38ee72a70bb89591268c46dc3c4e5beb45a69d3e8d94267. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QM6P41541720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a304255fb8ea9e0417a3fa58bbda6775d5ba57ade35b3d9dab7c17a13943198. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:20:19Z), 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/QM6P41541722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7776e5afbfaeb2719c66b58365939fdfa67e1a4edd7d6168de439eef9f2062. 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/QM6P41541726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9f99a37d5e98a9c16e501355a1ba64180c8dfa9bce9e78564469d1832dae6d. 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/DGA072398858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b842c8c97b1a28bfe2af69b7e388f47adb5bf0ce327d4d828a16614fedd282. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:25Z), 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/DGA072398860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e25f6d9c6978e67a270f0a8be2686f593409745655b08364028258c6fa98e5. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:19:19Z), 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/DGA072398863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64e3874de76445cc30ae48683fef9662fa4bc03d5c3f485cf5116459b761d18. 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/DGA072398864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28aeab32db91667c2e803c3c47d6d170b35d4d96804eb137d68f38a3ad2bae86. 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/DGA072398865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbed09264776c5970b8801fae854071a1a12d3357266ab188179187531bf28f5. 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/QM6P41527181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fc80936c4144cbb92de3e7c472241b25c023599d34534a91f629fc6dfa4fe1. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:39:28Z), 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/QM6P41527148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ee85d2babd65761aff2d0def7ed7e99c72efb6b981392f99f60a8be81d679a. 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/QM6P41527157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34878a20e955087af89f2717e2113edf3822f68a0dad6a612f56ee68f6a0cca1. 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/DGA082317425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674335b7cb66486cf68aac599a36255876f809663e412994b263dbe67425c0ff. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:10:27Z), 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/DGA082317427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7a2a8491a560c3a0dfdb56c630d9d593169107e81ff60f7a66490eca68682c. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/DGA082317430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8859f620debef1a63ca31032bf8e25f1d4a175f2b2c7b9969eca4e9d467943fc. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:27:40Z), 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/QM4TW2089681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3a1e54b96309596987a0b5fe0bbe731ca7d484a647d029d1f015e00bd43eb2. 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/DGA062455808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd515c344f6d8284b0e037f58eb19f3645aa11f7d2d6c2ce98b2732a8ccb04bbd. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DGA062455810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77895ca0906ba618cdbf267b90748ee023413f4793432db4402613a27e9c7973. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/DGA0T2458531.