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 0x9d1336cb08ce5ca4ca7bd34ed8a53d3adcd299b5f206ad6957496be8a2862c2e. 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/752e3d05-c71f-430d-be50-ebff00f7952a.json and https://artists.proofprofile.net/proofs/artist/752e3d05-c71f-430d-be50-ebff00f7952a.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 0x42370ce165d2697a5eb06a10984b19f24bee2103cceff85095b8d0a6edcdd1c5. 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/ES71G1710897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb092ea0af8c31961226c2013e5aa81b01d2e1f6a57bce502ebd1f32a9c3f38f9. 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/ES71G1710898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48922f94a1b6415540c8c801ec2d3fa77725d364cbe8c4f351ee425aedeb0c0c. 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/ES71G1710899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c462467a63387f8ff3abd9a2c6871e337fd30c14666b7e8a35738ff99a3e97. 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/ES71G1710900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfa99433b52e5793a10e259c25b74c6e18fd833f9ab44794297b7483f8aa578. 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/ES71G1710901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1303dc73a9d05610d0ac7a2668724f7fccb4722eff902b832ca227f6426c369. 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/ES71G1710902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9412f6b24e93290efa3f10cb193c499207c67b695ca447fa8ede782a6788c12e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES71G1710905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce2f4ee83237827a5e43da995085238154c6eec0fe51f31d45755cb1965ee75. 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/ES71G1710906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76741a5cc0976473462f41cb8908e95f9b567b11cf3569b5667f33c53cdc163d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES71G1710907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c892af6d1c0ab12774d1ae2955397864c16d3ab50dcd16f463cddfb4f7a638. 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/ES71G1710908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf233208a9d73dd5a5f1527581d83cb23eb189af22597c23a6172c875723d87ca. 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/ES71G1710910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42370ce165d2697a5eb06a10984b19f24bee2103cceff85095b8d0a6edcdd1c5. 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/ES71G1710897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb092ea0af8c31961226c2013e5aa81b01d2e1f6a57bce502ebd1f32a9c3f38f9. 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/ES71G1710898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48922f94a1b6415540c8c801ec2d3fa77725d364cbe8c4f351ee425aedeb0c0c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES71G1710899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c462467a63387f8ff3abd9a2c6871e337fd30c14666b7e8a35738ff99a3e97. 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/ES71G1710900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfa99433b52e5793a10e259c25b74c6e18fd833f9ab44794297b7483f8aa578. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES71G1710901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1303dc73a9d05610d0ac7a2668724f7fccb4722eff902b832ca227f6426c369. 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/ES71G1710902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9412f6b24e93290efa3f10cb193c499207c67b695ca447fa8ede782a6788c12e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES71G1710905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce2f4ee83237827a5e43da995085238154c6eec0fe51f31d45755cb1965ee75. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES71G1710906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76741a5cc0976473462f41cb8908e95f9b567b11cf3569b5667f33c53cdc163d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G1710907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c892af6d1c0ab12774d1ae2955397864c16d3ab50dcd16f463cddfb4f7a638. 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/ES71G1710908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf233208a9d73dd5a5f1527581d83cb23eb189af22597c23a6172c875723d87ca. 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/ES71G1710910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc696c10d5fd26fe14924590f1d8d95c466ff2266d42d6042e122ab9c3b9f34c4. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/ES71G1921627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc696c10d5fd26fe14924590f1d8d95c466ff2266d42d6042e122ab9c3b9f34c4. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:57:33Z), 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/ES71G1921627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42155cf8f2c71bc23e4a0d2b4503a9fbf1894b9436e6aa7fc7c8b4b710d10de0. 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/ES71G2034593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8195bb6bd7d57a3e326354f3f850fdd3b4e14ed9d220bb387470709d5441121c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:57:04Z), 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/ES71G2223145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb85138c0f123996d9493ae01feb3602229628f344e8649ce38e5a903891d7d6. 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/ARIXB2401976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb85138c0f123996d9493ae01feb3602229628f344e8649ce38e5a903891d7d6. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/ARIXB2401976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda287383d00d0c4a1413b09087c72af82a74988b7ed150d5f5f3ac3750e1394. 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/ARIXB2401977.
La Mitad Vacía O La Mitad Llena (Cisternas Arias Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c09c803e05256bac87b656da4541b656893ee1ece782546852668fe45a5566. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/ARIXB2403256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c09c803e05256bac87b656da4541b656893ee1ece782546852668fe45a5566. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ARIXB2403256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2b2f1f4059273bd8faf448a4dbc378c16782ad6c9aa70d656e800600f7c7cc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZ5AB2174210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67449e8905b6c13226564edbe34fe9418c9cb0a34f0fb38247d43e482040f31a. 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/CLKT21902098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b932cb8e13a6c69cd2d7eea63cd5f946de8b38b32429895f07b25897d5f6dc. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZ5AB2174211.
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 0x17e6cdb26db3d205b6e877ac6bedfb277fae399d398e68aa2d29394ece2a0b0c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZ5AB2174216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1149ea598ded5f08c9a18f669b16296476e38e844c23efaedaf995f96105976. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR10S1489542.