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 0x28ca9b83ab91da424e152e7fb6d908142566768fbed92fed2f33a78df4a7ca84. 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/5f22a488-8144-4234-81c9-15bb7641e69c.json and https://artists.proofprofile.net/proofs/artist/5f22a488-8144-4234-81c9-15bb7641e69c.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 0x57c99dea71d1d3009cad12e7962a92e15ee71b20d8764f45aa1358dbbe51412a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FRX872113486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1160150a3eff4201a50287a70b06fcf127bbf5d86e05dbaada50fb039905405. 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/FR10S2153565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904acfe05563b9b225176430420ea03a53a026d51941e179a6e4415206b51314. 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/FRX762104917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a4e7953b4563cf9f001a11ce500b26186f0c147c13affda3b06018540825bb. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRX872113488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d57691f6f5c1e9e3caab23d2036c8010509906961b6deb92336ea3a55ec6a2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR2X42027816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cd9a0109f8504e4d194cc771ce4b8fd2985d3df47d0a36f0c5477cc14e8e3c. 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/FR2X42027818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f6300fa0ced58fb5baa7d038704a56d86b1868c9f990d730094f3a1201b87f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR2X42027819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb9c62f5f9005d01549b5e8fcbd6223bb7de2352cdf220c371438684a81ae94. 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/FR2X42027821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2604cb41966ced6acc1dc9b515e3e2877a8815e870d12a19c99fd7c2c6abe149. 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/FR2X42475026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ef432b42342c1947c4b99b225f71b6de381c546b21e68667cdc19e758b0f8b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX452370188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17c7145efd48ba5fcd7f298d4232fe219c24f919a1c29287ccdccd482590385. 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/DGA0R2325027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17c7145efd48ba5fcd7f298d4232fe219c24f919a1c29287ccdccd482590385. 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/DGA0R2325027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ef432b42342c1947c4b99b225f71b6de381c546b21e68667cdc19e758b0f8b. 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/FRX452370188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1160150a3eff4201a50287a70b06fcf127bbf5d86e05dbaada50fb039905405. 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/FR10S2153565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0ae6b9f212d7942702edc80b7fa9acde8c0fa3cdc787b737c9b8ebd098d3c7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX762073042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521245d630dfd7977a7e293ec816e8bdc130d6481cd37d6fa0b848387b0e3b0f. 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/FR10S2035971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d181785419e36d21887325e0d449cf4972310899ff15c1616a0e83e35609b8. 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/AEA0Q1943806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18aace008e329c91b2cb0c015d2c2e20dfd70287eacbcbbacd23656683063a3c. 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/FR10S2035972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0911fde56896285a11b0b3cb73d5d794a86e5176007beecb4add530b4a7cb742. 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/FR10S2035973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf6a9dbe38cebcd2cdea2c143c159bd3c53c624d3b64d2a817b44c161649c07. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR10S2035974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f832a5b3b1b98659b14da81150602b37f8f4499d4b16022e27322b721dddf1e. 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/FR2X42027752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda06b2a3c98591e828203782804e4e90a8368b3b84837ea62f969094eee0136d. 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/FR2X42027753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea6eb4f3c24ee8694b72aaafd2e3b85cdb597dbc6406f5a0562276ea82910f7. 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/FR2X42027754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d13ed7a2d7d85fe97c5faa5e1fe5bc95affd85ba99d08bf4596507c012d76fb. 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/FR2X42027755.