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 0x2202372ce187ab1263709caa6cba6b558e9fed934f84656bcd8c8168e2ccbf67. 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/f2ec239b-8959-41c2-b5a6-e4421ad52291.json and https://artists.proofprofile.net/proofs/artist/f2ec239b-8959-41c2-b5a6-e4421ad52291.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 0xade4e7b2e7cf1b7ba1119816c7c6d5566b140bc16f7fe8e267f0999f280bd913. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUM71009363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60572c82ddbac72bb3d55eaaef544bcbea71f57299003a8eb185b13d0699e2aa. 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/USUM71017930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a43c28baa43d2a6e07597f5603d5be7826eb88ecbdad9c65dac5ee3e3e692a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USUM71017767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a43c28baa43d2a6e07597f5603d5be7826eb88ecbdad9c65dac5ee3e3e692a. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USUM71017767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09b5da64b740bbc7c2b094855471cafc4b9e0420729c3cc746432f0ef21ee8c. 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/USUM71017110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8504b1f64ac26863508f45b82fbb745daa9de1b80c37031ff89375bb4ca9fa. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USUM71017112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbf6f412d02800de754631c8cb808c693ebb9ac4fc350f6a81f12ee4ba00d3e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USUM71017111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e04648661591ca0afd14c6733ec2b218d600cf416f151f78c4217145ae0c602. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/USUM71017768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cb9ee563cf59e67117ba94b90976a7e93fdebedfbb8f9d2b07ec809ab1e796. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USUM71017769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b3364cd7ce8fe999dfe7ac70ab5778bd4a70a8f4a4cfaafd4f60836a043b21. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMVLZ1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472d0cb7e48f99669164cc69fa70eb1cbce8b98018eb3dc4cb557a12d25ae59c. 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/QMVLZ1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc447b58abdf043541b0e39ac203ec82194f4804cf0c5c803827a574dbc14b9. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QMVLZ1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3303138a6a3040df28e461f6f28511676f998d8c7a4daa073f47a3239395d052. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QMVLZ1100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd406cf091ba19366057078139e60c8e1dde2b8793d8221a8daff73f7c603c757. 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/TCACJ1578204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ca71bb827ba4f5255d3b14bd52a2a920727e05bda1449528fa01a1ae6d484e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/TCABL1352873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda869f9c154526deae8da827d52e805412942371dd43448bf39992f0248a96f. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TCABO1332954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f98b7a5d040e828e51780667e2a2e4554739449172fb1240f31d6b6ef78e52. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCABY1407563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7d85a0c44f86223c99f069b202f96e53640853b3009048c6f3ad3bb625370b. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/TCACO1616895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6a91f04d809ef47172e9e034c52bceea9ea595b2ae89f4e584e182aede2215. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCACO1616898.
Dandelion Hair [Acoustic Version] (feat. Melissa Polinar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc761a650e3b388e9ad058d8eba10e6d03f954979c48fd8aa252c7d21c9fa82a1. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/TCACO1616903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f72be9ec79dd2568e31e26f93d0a0714baf3c3d28e90f50b56477911e45949. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZNWT2021170.