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 0x5396384442a6c08232ce48c3ce936b4a3682e1fa847f2e90b65bd0829d051e2c. 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/6f395fbc-7235-4c00-85a0-af62a5ad9059.json and https://artists.proofprofile.net/proofs/artist/6f395fbc-7235-4c00-85a0-af62a5ad9059.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 0x8d02991abd35d3c75af779b0a3ea4bf9dee79fa947859242c724706f5e60d1db. 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/UYM121300259.
Rascar la Tierra (Canción Final) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d54def1bd9650b394d0343e9d3041d275ebe0ec992f9d6aa757be006877f53. 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/UYM121405059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9403eefc40dca7d12fef7cea7ce644ee45a01aed36531900d544ef3429d953ea. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/UYM121500326.
Rascar la Tierra 2014 (Canción Final) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b35a5537170be380deeaa390d76644e46243f1d316755bd4a0adf215bcaa0f. 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/UYM121500330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc91045f29086a05483a8a4f5a88f1dfb18e42331d0e346588c133f2ce41748. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/UYM121500331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb889ef923791b1713ae6fbe037afec0a418fd89af9e20f18b0cfa3374400c8b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/UYM121500335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268eb22ccce8af1a5924dacd3828c2c0b029cbc6588c49bdd0e2fdb1de826d9e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/UYM121500339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c7cb7fb19e9a041e7f468992f6540433d5c8e0c53edbf9cbe021f188117c96. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USCGH2028077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71621f2a341e0e89b0cb3bf641ae0a1478b189c7ba8059f77b390d340fe7234. 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/USCGJ1999366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa716dd321186062fd8d89b1c1849cb42af2d2a659943200c88497266afa48774. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USHM81927796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adeba8a5fcdd3323cc4fbf6d0d692852822e4feefcea33944ed1c5fad50856c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USHM81927797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb277ce54d9ca1d22e2418950b283b87aa356d896a78cc7050632feb59ccdd10. 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/USHM81927801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20778f4d844c35e48aa36c402eb912749f3077a143680b95d0a8b74b1b37249. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/USHM22006880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cac9d7b65bd99f5dc27c135ad32b4112f6295c41ca90e39b05e9598d295737c. 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/USHM22006881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd67be7564ff771d937387cd09f79c935ab8701b50933aa5291247e2db691c5. 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/USHM22006883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319640eb2143aa4a98fac9e89de514be5e796d04b5114df4bdbea560f0119ee8. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USHM22233043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd914077d8d79e18aee4730c39e50bbea5889760776ef3f79322e8bf1826736. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USHM22233049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d0979094a7a3c49b5d6eb4bb52f367e60142360df4354a0ca242e17ebf1fbe. 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/USHM82391340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f175fb1494a161e5c66e1a80feaf02a53a98992829e9527185881d4f4a00d4. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/USHM92456777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858183b0199027182617623e344b267168181b696bc10c0635c5532b4cde9463. 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/USHM92482632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14af11efbb5ae72d6fc2e862ab47e7b634a5329d5ae8af691d05cbf7bfe668c0. 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/USL4Q2440667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d2c48fb22a82141e8db846df60af200594a5f84d101cc61603c688857d3d80. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USL4Q2440668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf037228a998ad83d509169503516d73f466a721ce4c1f3f8b93e4b7d1223ae34. 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/USL4Q2440672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8caa749c1227757b7f3187d28bfe1b4784d1597e299618acaf18be7817ac67. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USL4Q2440674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019518b4e51c5ba7beed3f457cb46d5b86edced64979c970f138083708b89642. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USL4Q2440675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46a926e7ce228141b3e33e8966eb352d7bc7ac36079a021b88789df4794f27e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USL4R2409110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4666aa4223d3a92b07bd8fbdd0a770b04be097a46044cb9bd34d50437b587bd. 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/USHM92504734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ac3a29e021e805fd4863504a901e37fb50fd2b9458763a013b307c49fe47bf. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/USHM92504735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ec6351823ee36e0d0cb68daf0e449180f907a9f898e679238c5da4df5a8ccd. 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/USHM92504736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d7d2c601cf5c0a8d2c559abdb77c47c9de62904ce9caf9c1acf39dc8f6cf9d. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/USHM92504737.
La Policía de la Moral (Cuplé) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68919f528b5f0fddd3811e6abde5d6455e6f2b560b002c53dc2be793eb2a10bd. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/USHM92504738.
Somos la Trama - Palabras, Pasiones (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed24cca0aab6e3c211114670fdb307f28fa36f9ef044492cd955522fce8c5b9a. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/USHM92504740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58441165a8232092b06cda66fed4b547c922df7d81efbb979e0b4859592fc16. 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/USHM92504741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0123ec929b2904ae09a7a7f20d40637ec7aa1044d675d27fccc61948564deb32. 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/USHM92504742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee265f3dc98106ac69b90aa3b601a23f1f055e59943b2074bec20709e95514b7. 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/USHM92504743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f48489ebd248353de8ec12ed7b9ff41b5b3f1e941ac1be7b7568b9331f1d7d. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/UYM121500231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d755af0ee3c9da8b20666fbb34e9baa35ec3cf7c6d7f686a065aa38f8e3880c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/UYM121500249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f54aac95bcd9e24d1fa7880ba1ddc55363f4d4ffa2caf9ad83221ff799ee24. 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/UYM121400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d61167e369a5d753aae44c16804a4ebb70e900018c7411e4f29a352ef908c76. 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/USDY42003273.