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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9512fda0ad35f84422fe12c2f26842a314158d912e1f3e7d4b4865a646e38ff2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ee029b0-1996-4ee2-9125-61582458e8d5.json and https://artists.proofprofile.net/proofs/artist/8ee029b0-1996-4ee2-9125-61582458e8d5.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce403f0af94081fb21bfe70409f0ac6f4b0f53e161d43fea93d072c8b33af31. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWDD2359658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30530de2ddd686f4399c56f63e2820f41bf1f460330a3d81f405cbdd989eef4. 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/QZTV32332465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1aabea830127efa5d3b16bce6ab9d827238eba4f072deff094f9c23f1e01c0. 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/QZWDE2435786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8bf588114637d2ba62cb7af31b6cfed5b1d39bfaf42be042382eb13422d598. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZWDE2435787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a6ca11126e3aadd9334e8fba8d513bc4ccde074b667675eb285b88812acd08. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWDE2435788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128972b52b83e0f6a9c69fc281f30b9fec186135b09f97ee64361c4d551d8ac8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWDE2435791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b07db835c56369fa6d4f8a12f8da7cee3b0e70baa2a3176def0802e66cc74a4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWDE2435792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e3c5b311605b3905cf261cf7448734228fe3057ed6dabf30b0a54ca2e76be6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWDE2435794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ca842dee353c025282c523be74531d44f12d15528ee31d502c7249b8712601. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWDE2435795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe467946775a6804dd05d4b74e5956495042875badd88a81420fa42ee320fde61. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWDE2435796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10db3729899ba76917c216a6745c18050f298cfb64ebddfd73ecb75ead6bff8e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWDE2435800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c417a24d655858b339da2b1f6aae8396586b6e6c3753f16a987052a0fb1042. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWDE2435802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5603c954686d6e2bd0a102871dad1320b07a5e0656f0275fd111f2fd737d2aae. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWDE2435805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c246fdeaa4ae5b42722f789b598850e8fe3ec0edf307ffe63a5bcf9857cd3c3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWDE2435811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34b29bb244be95c4f30243171d3c2b2d6596523d5870e5f1129e0a20f924f40. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWDE2435815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063c74133ae37addd5ddacb24eb80c0ec875185c77807a407f4ee9d39ff1a05d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWDE2435817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff997defe9fae24ea14e6bfad7f08fb092be0c5e7739c7ac499e4f94a50bc06. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWDE2435821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6b0d2fe645afb02c99447f729aa4dec964562cea462caedb6e62c2b4802905. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWDE2435823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8dc16c027734baadc7044ded36ea293337c407d36e6f4c8c47e2ef7453c10d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBWUL2533865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7917d5d7585065274488e27fed02cf3a33c87cc240ca210c7f240acb2cd7a8f9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZEC2405922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd867e8dedaa0def54b1ebc92c2ef32cd6e3d9e97fd403bdf3334fd4d390b8770. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWV32472826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdec138dea14a33c3b537eb0529169757d133ec55fe2ee06c576cb95044cd474. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWV32472830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4c7e0bb062fdda90f7474da83e89fc4e3e0b0f3057c697b42e0afe51a718fd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTRX2466749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c131856332a1357ea1c9f5754e0312316c7afe77a62229f6a4f3fb55c278297. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5FN2422306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f05e873503d948894187f57193d8a3ae3e9f16806ed25a60d8be570e1d3c03a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTRX2311996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3facd158cc2b9d691a5f7e96bd65482bed98d079501d09050ac8727415c2c994. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBWUL2350374.