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 0x5f6b670af150071ce933e63d000823036bf041b49bb2c72934b90a372a975f6e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43cc504e-9c4f-418f-aade-91ae8bc474a4.json and https://artists.proofprofile.net/proofs/artist/43cc504e-9c4f-418f-aade-91ae8bc474a4.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 0xc8d5177e00668872a0fbfcd365bbba6dc2aa5063e0007cc93d3ac7a97f3532ce. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QM6N22340100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61208b425c9b58849ac453a797146cd42aa99b0b9b9835ff7c0334e0de55393c. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QM6N22340101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cb990b7a641a96e5463e1b86a4291dc317892f7785796fe56fed557ffc99c2. 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/QM6N22340102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bea65407e830977813191436125f004292c9af346acf332e06f2a914db5c038. 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/QM6N22340103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb709fc45cd25d416ba9283a19203741028f7747f23e8838a58a273ddc60f5a74. 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/QM6N22340104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4289d63b45b67220d50379ac869b443ea97dbb51fff8b33be11d7c5f96dd7c4. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QM6N22340105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b26f56797680ae3d94b9215848c68ab3dfbc3522c014b96b847d2e4eabe7340. 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/QM6N22340106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c6b8ad8c42650d4420f4d2800d3798fc361a07f5074f12491931cfc025c331. 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/CHA832197001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984034a807b4496d3fc950600d3baadf0717b54df22970428ec2c185a38aa313. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CHA832197002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ba84245c47a529c3025a6a94c7e74cef12c5faf1ef8af24c8b6fa46abd2d90. 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/CHA832197003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ada47d911edad15e653947a9098b6a72cb0fba416aa6057472e8d52d6a21b0. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/CHA832197004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9ec9ac60e33207d4b3377fd42265f474db8cc5f3b10a008a610abec613268a. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/CHA832197005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff578e5040c199fee0d1cce1fdbec2daab896081c0eb9749e8202d96dca3356c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/CHA832197006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672c00cbc607ffdda7c36fd28e98e47d0db6eb408527988453a02cbe68c284ed. 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/CHA832197007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6125b2ca548ab154d02839d6c6726cdc9466bb79e10a6399816c9a9fb6a92b14. 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/CHA832197008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e59fbe8686d39a37322f50c144255171f24218331403c02b7832153b1edcc5. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/CHA832197009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29f31e757fac8f036249e6e35e4a8e19df445be7cdb7ffbbd02d15c8d2240bf. 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/CHA832197010.
Noches de media luna (Turbo Sonidero Remix)
Noches de media luna - Turbo Sonidero Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41bb7db45b8effd32b06f179a2973500f5ba204b7b01b6f2d15e738cfee47cd. 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/QMFMF2398727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cb354b0ee470ec4c8818fe3b64ee385e34690c0f225204f45effacf6a1e84c. 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/QM6MZ2341226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375ca262d19f007c752fd7e8562ed269858a467e093d4454831d2327f16b704c. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZW9K2289331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2877749cbb21f6aba69ecddc5cb4259e22131eeafb21a7620a9b962a3976c3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZW9K2281229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2877749cbb21f6aba69ecddc5cb4259e22131eeafb21a7620a9b962a3976c3. 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/QZW9K2281229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9ec9ac60e33207d4b3377fd42265f474db8cc5f3b10a008a610abec613268a. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/CHA832197005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ba84245c47a529c3025a6a94c7e74cef12c5faf1ef8af24c8b6fa46abd2d90. 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/CHA832197003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bb494dc1a54ce35e94dd7f73ff2f99109c82075cc62d36c4ecd59c0ccba280. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US3DF2126640.