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 0x76f631f60127720bec7e0db2bb553fe849360b1c31126bf7f81a1ca9046de2c3. 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/f1a802f3-fa0c-4bda-8173-009c8ef271f6.json and https://artists.proofprofile.net/proofs/artist/f1a802f3-fa0c-4bda-8173-009c8ef271f6.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 0x910cf8371d749421b1bb685b12c08a35b92fbf5eda1cc2270374b1bde7d6af93. 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/ES47F2401458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa473b08cc6910cb84676ea3105abdb65e4fb2acad68cab25a5d01e8a1e78f01. 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/ES47F2401459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c9e86f404f467153db4b7b28d8db4533fd919e2ce6967ceb8c8aab0a5316c4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ES47F2401460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa490b8b95f87830e0ebcb48d8af940786db382c2c80c714ac7d047a44a6e0455. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ES47F2401461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547d4d8eee135ff7c563487f8df61c1eeeb4ef62e43e27bb12bc7c234de36028. 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/ES47F2300926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc28bb72e5fa222ff2c0e0b335c99064de7e08e4e07668bcdfbd47e16012e33. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/ES47F2300927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7609db294e0e6a5abfcade328d46d9a95ba9a48ffdc5c66dc34e1ae98851f92. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/ES47F2300928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db4c052d5f313c5bd83f2b298804ee0eec52284af1c3d38f526a8cf39df3d82. 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/ES47F2300930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28e9b8d17f2954b9f38b58331b44851776c2154fba5c4861c7875b1a3e7ef10. 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/ES47F2300931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a59aeb9e9e04f7c257b376d654ade325ff25cf6e83e077da9ba131530f000d1. 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/US3DF2497554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7c7391858f1b5109f24bc91bbc0f7f3f4b2df81f4d30d93cdc06284d1d9297. 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/US3DF2497558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7deccf90dcfa55a7655156c45f5dffcbfb06c03940eb4dffb35be8428e739904. 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/US3DF2497559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7094e576c998b4ad4ad3d235251e8bc21949053e19f178cb19da319181aa0d48. 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/US3DF2497561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaa771406c20ae40423a80579a2267205f08c8013a9c53ac97c7dff6a1e76a1. 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/US3DF2497562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b30b23a6f9058bc280ce07b425ed1a127b531f0edc469037bfc1003abf511b1. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/US3DF2497563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdd952b8c59f867dcb1bbf7ea470b5cc72c649f6af682b1bfcaea5ec1814863. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US3DF2497564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee8cb65ccbba0c974d16ec3429b6b41fbf69263abe631a25304df76811f35ef. 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/US3DF2497565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b054d653b7bf9e0e3d8dccda51ba8e24f69b17efe15c52a05ee32b8c6aea17. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/US3DF2497566.
Puf Puf X Taco Taco [Remix Arrochadeira]
Puf Puf X Taco Taco [Remix Arrochadeira] (feat. MC BEATRIZ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74d8614e792fc71fdd41673b77600535bfb8d1cc0a00b76c15258ad48f6e4e3. 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/ESA112446188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212417a4439fc1ea03b2dcadd750f3904b68fbcf0d8ffc4d9ad5a7bb0d1a4c65. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES06F2402676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade595225ef496d99a5eaa0a32edc0e121c61a7f5eccad1b91c82b776cb9952e. 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/ES06F2402675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97577d40eee7dc85d3bf96fd068759c16bb295974c5c36c45b1dcf8859faf06. 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/ES06F2402674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94bda6c3152cc033e763f7a27ab37eef9102ffd4e79a655007549584effb2f5. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ES06F2402678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c41975e50259397b69a835b835b2c79fa999cc55854eab2eed1054591411572. 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/ES06F2402450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32fadc9498ee339cd8515212951312cf314d84a7b4ceee9a2843556bf21f5b6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES47F2401333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf463293c22552c66b52a783eae0ab55556f6804c28d18c6a3b3c9974fc341417. 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/ES47F2401334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe01ec9970909a17be73cb4b37e72336965e93793032070d59ce6cb2bfd343d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES47F2401335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca4b6eff41c4b4530108be23303739d1a429ccad46c9a678df11de16e26f7b4. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES47F2401336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916d6efe347ad1fd3744fd1d8b528fd417ee28e6e9282be6696544f1ef882bdf. 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/QZYFZ2401781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa76cf16b58fb69066e391f0036462c1babcf1725013782f673c1b5b3f5620b0. 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/ESA112432220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8e981f0cb064093aa39ac7fd199526ff2f14f3b366c32ac05ec7ee29935674. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USANG2463682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6200c1866be4c6fd142b8cd773506c8a08f39a590b8ff22fefbac978ec9c9d9. 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/ES47F2401228.