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 0xa7e64ad4a98568b15f6f6f672b5931cfbfddbc9e75906224290715dc13206f2b. 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/af07b7fc-8bc4-4093-bd02-684b6807d597.json and https://artists.proofprofile.net/proofs/artist/af07b7fc-8bc4-4093-bd02-684b6807d597.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
30 Salsas Colombianas Pegaditas: Lo Nuevo y Lo Mejor
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 0x602d1f7f30f72cda3f8f6df0993be4d6003a20e2891331d18fe4b53027c62fca. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USALH0601016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b6748e10b20cde51efbc8da5199a0d3442eaca6d61bfbc2f78e3f037fe89fd. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USALH0500340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf7da1316de0d385b2633f4922f46fc82bc208c61b2c90e8dc11d3240d293af. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USALH0500344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe063144ff6c34ed144a6cabd52e2717b42ede3b416890278181dbe2456b11f. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USALH0601018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0ccca5999bca5c5d56233dfd5581d6a42ebc2ed2770cf2d0ae71671e7d231f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USALH0500341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6feec728d1c26526695a5bed2d87f132e326f3937749ced094d81a4abe8b7fe. 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/USALH0601022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f639a23e8a6a64ef30debca962f65566766fa3aca152bb21fb5ffa7aa304f93. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USALH0601023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41a0b9faa46ea6c507e3d9309cd7601617f8b57cd305dadfbf0ffbcb3b4fdd1. 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/USALH0601019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17249e0bf638ed4a875d1157bd620835df6d62fe57b658eed13e1df19b75bb3. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USALH0601020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fb7b00392ac01de1a479d3df9d894a43e3d8da000aeef40e8ac6b7ac99eecf. 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/USALH0601021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb170aabce4db65e2e8ab472b4bfd62fa8ab607cb5fdf239809aad2b90efdbb. 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/USALH0500342.
Los Exitos de Salsa de los 80 y 90: A Nuestro Modo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98544d3b9a1ca5cb24983b4c180a8c5dbbe9649eef11b2d15b1ab7f6b3c760f8. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/USALH0701515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9e07e28ce1d37eb3613a3b38586065d008a16c9d97dbd114af559184379706. 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/USALH0701516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03abb9d17f39465050d405ca7a0547af6a7b9d8c6fe457952dfe10d80755f9c3. 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/USALH0701517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2401a84400004ef218c79b50e4f9446fe2ace255248537cdf087e376639a9f. 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/USALH0701484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b8e9fa1c48940d619e91ec9228a109915854a2ba80fe07443205b74ac96c1a. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/USALH0701670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cfdb62fed806894e1a21367848be372c982607bf65a5f56cd84fa878110540. 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/USALH0600851.
30 Salsas Pegaditas Lo Nuevo y Lo Mejor 2010
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf699caa5bb3186f68258536901f7f5f660d3af888185dbb98aa1efd28e2cc5e6. 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/USALH1102769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2641f060de872047e9b7b392dc326ca42aa424b701f79eb23c50205f1eeac32b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USALH0701324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2076263c7318c30c21fb083fc9eec6dfee3610913c6f797ad1c092d29c727100. 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/USALH0701522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b27844f81d7bf0691212776eb68dece9471d9055e4d56786eb7df3a57b73877. 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/US6R21385208.