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 0x3450b5fadfbd66e563feea68ed779ac385f90ae084bcc9bd57d7d11257b40bff. 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/d011e7fa-254a-4460-9af3-590d1817d640.json and https://artists.proofprofile.net/proofs/artist/d011e7fa-254a-4460-9af3-590d1817d640.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 0xe223f5b3282a4b94dc2c6e02605f20737825178632c212cb0971e2ce75888801. 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/SE5BU1864232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c659e7f9bb213c3851d8bc31548441b6d966f39ddb2ea52dd1776d5a4025a8d. 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/SE5BU1864234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec0d48d841fed8ab3aaf77679b4a06e443d01815d3aca01623f14cfc9def6c4. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SE5BU1864237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfb29ac3eabead675737a8ea38586bea7e3ba5396919c204bbce1c2e0e12f6b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SE5BU1864238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba3d5cb0176d8a5752603883b52ee92a45639df7716f5fa14ead9b6a14af9a1. 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/SE5BU1864239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cb4367ca5e66be9fdf83d81beb9b635116cec8a17f98f00f972f2b95b2dd25. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/SE5BU1864242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25988cc27464ff12d8472ef6f26841e3abd1f77b891f61aacd282cf2f6c2c127. 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/SE5751875273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda060c24299bda72521768cae36dffea1ac01bc17be6177bc7650f760f4b8991. 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/SE6131947368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7570be8103e7ca9990636360d3756decc27794734d25250ffa255955ecd5f7b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SE6131947371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf546a1eb0658ebe0a8db83b1144857a00cf1d348540207abdaa36dd76ec886. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/SE6131947374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1d06d54ac7827c6311d8fae404307cfaf1a625921fab77abbb7ebfa42fdb40. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/SE6131947379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fb105ebb4366d8b7c818c8465dbc4521cf3ee6f489d700c1ab21a78d97062a. 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/QZ7R42150425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddc1b3051053b37f41e1b1cdc99a78b4993e38dcd7e2301dab004f50d9d5b90. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZ7R42150768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e42d09335d40d496d1e20ddf5daf662953349b73e2ad372b9da483c6b23f6d8. 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/QZ7R42151941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb39d1d4d1135bcd587fd575989ebb3eb9238b9da18c972c5ee129a8e1e0a8f6. 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/QZTBE2347698.
Dragon Ball Freestyle (Minutos de Flow XX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0235bd1d8d87a8ccd7639fa4e20f45c636286f975ec09020422a0085bf7fb42. 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/QM3DF2119434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18b774f63cee73bb11f34c5bbf3af6f00ec48337e50d1f3ed84b62fc6779854. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/ES64E2510255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761cde5bdfdf6f594ea0096065bdc9885e71f89d91a796efb665b8586fa8bc79. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GBRKQ2436307.