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 0xf41f86013df82708a2a9da07018bd046e3b0383fcf538edc60f3c40b0acffe66. 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/b11ac9e9-a2ac-4a7f-8fe3-1ce6724e9017.json and https://artists.proofprofile.net/proofs/artist/b11ac9e9-a2ac-4a7f-8fe3-1ce6724e9017.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 0xa44dd40b9eae51d3d07eccc6e867862e2b86d1d905417b661c1b09b5d2f9178b. 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/QM6P42450920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29529d87408eeb5fe6f6213bf29de46596c5b15e3dbd438aaacb8c1ad6ec7d9d. 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/QM6P42450921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bc2df9a8e5535231569c0b89ee621cc625b5c211642519f2471616b6036b53. 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/QM6P42450922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae89244c15c07bc61fd764702648528dc52f5cefadb735e9b0ab758c638b897. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QM6P42450923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400c27a03e2d11b3ac25c5ad7055da7751cc8dc784c3d8638b5e4a02aa689b0f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:05:17Z), 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/QM6P42450924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ee036d2540656d3013e3e07dcd24c1ba895aff0488626477cccf365bdf1efa. 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/QM6P42450925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e2f914d591e52f695b6473097572014323f20f819e97a0fc01d0b32bd4a541. 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/QZTLA2463833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8d6a080baa0e943445311d6de52817b80917fe3fea129966e6f77e8f888724. 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/TLVEM2457633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e7570220c26162f3a9179645e853e01a745331a2356207cd6a0cf6b6bd5293. 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/TLVEM2457634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b278c564a11b21d154fa705f9ad816ee1e9f91efca72737d4b52bcee2cd225c. 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/TLVEM2457636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea205e48a46743ef449bd3e2458ad261be88edb336eaddf0ee6055ff42151fc8. 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/QZSYP2497987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535eedeefe059f444c78a085703987e6ceedbba84a2e05b22798d42c861b24ee. 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/QZS7J2408403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4ec0cb1bf943922497f6e3dc23ba4bc08a59cebad3f48fb0dc045906b574e7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZSYP2475226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4c4c8dbadc23c080fa0b9056fbadfc47b450dd6e5c3154634c8ff9f6f39620. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZS7J2434157.
Di CocoDrilo (Guaracha, Aleteo y DobleTono)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bd1dd1154594f6d0f7f555d60ef300cdebf162a6c783201c194d72d2805972. 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/QZS7J2423290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf191f69d4973bb124aebf944d705748c9465160d39990416ada743ff7f3a2518. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:56:17Z), 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/QZS7J2437752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac6a9b37b208992e74833a7cdd3b9266af6f2a6f308f56163d5e86f8e85d92f. 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/QZS7J2466850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d51d8bea92e3a59120a3a043f13d04fa8256107ed0cf246fd8203d63af57705. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZSYP2486388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154ec5892fba5c11e377a571c2ba963d84586e3340ffc362a7e5af6299754a95. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZSYP2435730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d3c1551b587200c02d62a7903fa7dd361300fce0b9ba92e46123457228fb86. 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/QZS7J2447408.