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 0x4eea3e1d006c1c68457835c7a5d4e6d1e512a96a6ebed60478bf15f7bad3a5f5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/283518ca-5a00-4dcc-b783-afdbd4186102.json and https://artists.proofprofile.net/proofs/artist/283518ca-5a00-4dcc-b783-afdbd4186102.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 0x119d93b5400320b9001b243603e3361d4e48561d4b960d3d501e58012de7203d. 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/ARA820600797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104af25e93dd947f065fa506722baddbd42fe5acc1d9af0f3a0af4ac1a69c41e. 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/ARA820600801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad9d822b43c7ffe471ed4ce300a79d2b6e37f0e23d5f22dd82fc61c6555df46. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/ARA820600805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dce375253b5a4c206df327f0ad342da60c26cfc8e735a03544bdcc316629a34. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:33:07Z), 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/ARA820601089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7998c9ca48245709414ecae194cdc82bfac6f8e45721ffe9d9c87d91df9850. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ARA820601111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e7408b8e94b929201f27f89b296816e9f16db26ffe7ea0ed8b0cb974fbbf95. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ARA820800502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd426604c315540ed0926ca83e65fd797d13d22c0c82e10014fde25b801affeb0. 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/ARA820800504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa2420fa15629039405dc24c567f01fd89ad92b16f9ddd82f6b7e060620ad2a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ARA820800508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bfe51ba73f43955e1ee7e292f0213e458dda6251c4d12ce697c538478a909a. 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/ARA820800510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91301629c2de9806fbf2c614214b24b4b3caad1a527e88194b36b48ffcceae1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:00:32Z), 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/ARA820800513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997420b48b446165dcb025b19f6c770f46ac3f8af2c740af7be05d26f89931dd. 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/ARA820800516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b961809e2111bb26955a30dc87d8cfb3b8cd5e99b0fff63768965c8d61ec0c9. 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/ARA820800521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d83859ad3b5ce46158606804ab9c494ca258c47ece869fb1728c790f2225c4. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/ARA820800526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92224088c71eef3edde0930afe3421d076d4f527b426c760c406e855ca44925c. 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/ARA820800532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e98f867d2df3ff9be3cf6c4cb77e841d0ffb189ea6f0d3521732699724b2e0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:24Z), 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/ARA820601622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8100b10953e39b8723b865e7ce19962f17c686994b87552720567ac8e23ba159. 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/ARA820601632.
Patatin Patatero (Canciones de Cuna a los Niños del Mundo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede24e3de916be0d206d29cc0bf3d5a294376d03e96983079ae256fe3000cf86. 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/ARA821601157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fd95d92077010fbabe43e3a7fb5f9cc0dabdfeadc94d643702e26454f12557. 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/ARA821800333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe990922035576e4b8a90be755ef2d77e37446497d6016368919f2e3ccdef2abf. 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/ARA821800341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c9e9b1624e2d5668e32cc5383163eaa285ca043336c7393a31c93c04d41d64. 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/ARA821800342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69d5f604ebd99b0aa737706a7301ab0f1ee04350d00bdb50a0a777c46b20162. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ARA821800348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d4a44defa18248420769806afdb9c7c491f02e9b0a1ac18902cf8bce21585c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARA821800350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e9e1e77fbd38d6e78efdf1bf899c62fc398fde010f3172605cde8cce7062c4. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/ARA821800334.
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 0xa9b0b575b4cce5970b7e61f62cba3a605284a642312a41d9a95ba7bd5d98de2a. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ARA821800338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5f2c119e6279a983dd6e818fc969b42dd52eb804a4a5da961a1d763b673c84. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ARA821800343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f1554fa939bf5047a1a0e8f74f403c40c01ec4e6b8dfb3b08eab7db19889bd. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ARA821800347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627b18081162675d0ac756dbf0c0ed8dca59902cc9ed65910cec59df89329a9c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ARA821800355.