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 0x971d7d7e62d81519ad34d852adfe8f6bf476efd04beace6e37c0dbe6f174ed5d. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c75c1035-75a4-45ea-9eaf-951b93a9fa6a.json and https://artists.proofprofile.net/proofs/artist/c75c1035-75a4-45ea-9eaf-951b93a9fa6a.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 0x20feb66d3967f39516642d35a52bcc6ff7b13564e67f7a294a2e44d7894c6739. 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/USDY41779196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8923bd74c73eeba617b7bd27b37b551b21fa19c68807439a6a88a05056d38a2. 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/USDY41779197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2e76e9ed16eb6a1b399375277ef615607683cbf2b3abc07c696cb54d60bca3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USDY41779198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e30d021cf62d1ed8d5e97d16016a9155f0eecbfe766e97db71d28f5c1b2de7. 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/USDY41779199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d7f96709bf67f59c0b01d19522fb3ce178adf5acf0a11ce9f5912cc015a080. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USDY41779200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0104c24e781c1fb50793a46841bf8477c653a934c80e63c03896008330ee83. 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/USDY41779202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91e5e0bdccfad05d5624d2c2a6f36eaebb594b29f6ff024cf467ef64bbdd8a7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USDY41779203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03d2bddc179322c78fb8701b87d566ac577265be3d0b57928d7d41ad4028d78. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USDY41779204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8076add256755a6ff5b4d7e1eadff06cd3e76dda359565a546cdb664377138e. 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/USDY41779205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37918b8301196ffb1c77112433f53ab1bc48d4409463c9af7f9444067aa19f75. 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/USDY41779206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebadc3d0b4448cc95e4c731d080c2db0ca60630f65036e89080dafa9c4540458. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USDY41779207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeca53aed6ddfcfd6da86384fb180b085011bdf39ff1432492c11717b06ce9f3. 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/USDY41779208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d44177b763ba9b92966ab8c99a3a609445d489f805af62541e4a641bdbf286. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USDY41779209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0590a49dc5f360ab506e1b256f8ebbf0b0430f0fb9cc4fa9f3c6b70883d5b58c. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/USHM81604154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e67c386737cb55ebdfcd57e87a14a5650bd7fb3c38802f3d030924f9249220. 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/USHM81604156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9d81b1403fa39a21b2bede38eb5752668fb0302b2e3c4087d0424f51b16ec2. 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/USHM81604158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc741fc51bd23451363c2895b7b573ef6901bd36f2e77d75b13261b63b4fd03ca. 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/USHM81604159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127ee36c523744c5a66323220f953c487ffbd126d70f12e4394c13cf29262ee6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM81604160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9631ce152a1049bd3b0f83af70b4268b4a45a9fee222587fc59d42b9938cb07e. 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/USHM81604161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf733cfaf4419b48566746dcb361ecc93cf9491b72fef9a3cfe31647a7847fd4. 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/USHM92039901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6b1d69de53d36e3542b747459da8a4a62ac2f3ba86c4c95e525cbda724b618. 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/USHM92060316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda654c4fe6686157894f161d3a85112a489734cf89f5e95d031e49befa991c07. 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/USHM81604164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05710a0199d0e5d0855e6fd6e01ae01e0d728da5b83e1c548bedfa27c5302f65. 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/USHM81604167.