1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x2b4d1d3617f3acefb46ec68e02b74b6ef3e6e55da48478b981014c42d41a7d02. 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/363d47bd-4272-488d-9eac-732a4bfa5c45.json and https://artists.proofprofile.net/proofs/artist/363d47bd-4272-488d-9eac-732a4bfa5c45.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 → block OTSBitcoinBlock must exist at that height 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 0x414af3ef8edaba6c01578bf7725a999388b26def372217935adada6592f6988a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CH7812414159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaf0a8021cf8afec3a89690a6f38422f846bcde14a39656c6ce9501cb437f7b. 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/CH7812414160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cae804cd6f49198f245841df0a50f3ca90f67809934721cbaf40895e99fcd9e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/CH7812414163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb856b97eebd601af8b6726e60e2b32f126da197ca68bdd28ffe1f012b6dd000f. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:41Z), 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/CH7812414164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1331a30b48cef210f1a8997e2c2de3b6e7cb2f45606564e93f4507a74cf76152. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CH7812414165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07b9a6b8f690b034cbeb8b4193f1a73e0e5f8b105b5fe073f78bba9f60b320b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEZ901501123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85daf53510111970c060aae8706e6eb28d45fa7e807f0caef8ab749acd642fd6. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/TCADN1843746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb850323b122a5c76948a86b6df045b9885439bf9f4f244bc6609104159a88648. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/TCADN1843765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496784d1f1be99c1b6206481db765085fc6454b0633aaee8baab1b9be37e9a8d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCADN1843795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987462d5c7c89fa33058a8ce7058f0bdf72dab4cb39a32e65f5bb20168bc58dd. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:17:15Z), 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/TCADN1843796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f438bd98dce20e574803405959c884684e674e8fdbcf2ea4e3f8ee484b393ba. 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/TCADL1826653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c31011d8fb186fa11bf17b5ea095b5040f58992c8a775eff277367c2c7bbf8. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:31:33Z), 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/TCADL1826687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30b5b97e10b739a79f7f23dc355e2b06725b4339b18808ee7af1eb7737a928f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCADT1878582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9204c0978cb8b9f82df27327b9eeb27f4d15c83dd39d352fa3ec9a57aad610. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEA451807370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e000214d48baf041fd7bb21307c5c319ab82c4d8bde4ca6599b8135e6f91c84. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEA451807660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f779c7c7d1352be2f1bf15042300d1f5a6294e9326640db4ed0d73c02373250. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEA451807390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac015504a1561d26325909ab05fc4c0d98f8d1fafb7dbece5815268515347ba0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEA451807440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1857115fd109ab1a83830f03d89f24b6676cea911c746b1fdcccf2834462affe. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEA451807450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7be91a4700ead4042451904fc3ef53c16166d5fbe9622e0fd271f66d25970d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEA451807500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665bb3e87153b1dd999a5298d6f3c70364ccd315f5d35890b3ebc93c7aea5843. 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/CH7812051401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbec6d1e8939b65db0fb052349817c08fbae7fae80b1e79769c7125b547066fd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TR0011900336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dec9cb058842b6938d26197c8904d1f6b705ae8d4cf104dc2004334d91e7979. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CH7812049259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baf631bdba9356695d25357bb957f716612e11b8e38b503b0667323e6d97852. 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/CH7812060948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec90d96c703b58decec82f4a8ed712703ae5d6eab9cfcda3baa2ed4153f1f70. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/CH7812060949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a03c7b99208851cc0b6769716081401b2fc4476503486eb24d4b9fd266483a6. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:07:40Z), 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/CH7812060952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098c4eb4914907f99c898d28db2d2d8e7118d665dead2faba03438f77cc7da97. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CH7812060954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0ac36c0f7722a941a359d6c73205848ca9577250c4f532062cba8f1d956524. 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/CH7812060956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7610653eb23106ef80ec1c5215c032f3ae5bd0af8b5a67cabc33d363233591cd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CH7812060960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c51a1f02e5f760e44c24b1f286db8453b5a08cb3e664b0401b1a2e052dcc1d. 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/DETV91501330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1616de9446f55f5b861a5f56e4e12bc5f05a8ff8fd6f9eb934020ddfd91d72c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DELJ81458330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff75055777f5c195ca167ef2bfcd3e5320b5123bbd7fdd5858b1bc3624552c9. 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/FRX762104392.