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 0x705405754813f7cb60760f759a826a98fb05dcc2f7b3a33332833c593f025cdb. 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/c2574449-08b7-4d30-b044-bfcad833437c.json and https://artists.proofprofile.net/proofs/artist/c2574449-08b7-4d30-b044-bfcad833437c.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 0x831ea9d90ef07e89048a6516956f362121fe8d773222030b98f1a95e6928ed82. 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/USL4Q1989834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd208893a0d59eec57ea8e452717dcb4a752b404ffb29034a199d5f97702d415. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USL4Q1989835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdb63dee48bcccfcff25f41e61b9dcbe91ca0710c23401ca932248b29c50f1b. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/USL4Q1989838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc7f36a8040de3f70f00a93418944b5d580b037ae98b7ca464c4ea88e8359f1. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/USL4Q1989839.
Ella No Tiene Ni Idea de Lo Que Se Siente Subirse a una Montaña Rusa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8108e549b27dfdbc27141ad3e6a655dbc4c28d05794586e17053a7e3b2cc7d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USL4Q1989840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe736936e3b8491cc42d20c1712bc365d0f353b2fc475b16b7abd83618769e72f. 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/USL4Q1989844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc260214296d7057a14e0b6cd5133beaefd67719a3e71fcf0d157755033b418af. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USL4Q1993159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48d564aa81b9b2fca1f4536d784c189f1899401c53374a342c5a07eaca9f2ab. 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/USL4Q1993145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ea6a8768f550f9d2502ac05c792fe33b0b92f4b27c51b238ce435497750d35. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USL4Q1993147.
Todo por Nosotros (Remasterizado - Edición 20 Aniversario)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5fa9221d1f47bb7c52a5212ac384360a8b9d179323f93ce39b3eeb65713296. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDY42176242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27713c0ebe44b4215e4c29a67c23c513830a8821c723586d486f1866383698a3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGH2295303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f33fa6c1545f7d1ba747cbb4ae5bcf6e30eb16200f9adab25246fdf49fa4d9. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USCGH2295305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313015601927eb5d1fa5bb05ea4bb05bede120a4edc4670ce8105d058879cf28. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGH2295308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e684182f8a158cb902b88dc45503af742cfcb1dec7b88425b8a9c7d34601673. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USHM92589353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb48cc41fdf7b49403651b81daff8d0bbe67797a717eb4da1e5657e47126752. 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/QZTAZ2386386.