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 0x4002f27bbd4a46b9db01703fe54278c01eb7328ff9ef728f066a9d9065183c87. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/551404c1-6b42-4509-832c-9a07c3200ac7.json and https://artists.proofprofile.net/proofs/artist/551404c1-6b42-4509-832c-9a07c3200ac7.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 0x23eb608ca302fb3f33f6d5be8932146a3ed07e8d03b9246121d8288c091b1dd2. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZGLS2529320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3828d9e76721903adf0e146cedc8b8b9b7c9a7bd61109c0a21c261e762bd31d5. 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/US7VG2596220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742018343b3f8529343f8fcba725415c41b1af52d9d74731937861d42739ddd6. 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/QZW9M2412060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdf60fe485059e54834678ce9323c767c7fe749a32d7824d57209fe27cf0edb. 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/QZW9K2415525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7a2f2038310dc1210f9086c6b26b9b69dee8104ab5771769c7caa92a23a00b. 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/QZW9K2415527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b6e50a4b8794d340fa9264e37e4114729d38bea18d6a42c1fc644f8ee34853. 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/QZTVM2467202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84577755c2a9f8dd8550543435f515fc599207f71e803b645521f737892854c. 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/QZZEB2417578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1297ed2e6811df96e7e323b7805d6a618edfe4e0363a941b522491f879143d49. 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/QZZEB2417592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ee2c7077c47f3af229694a60a7894de0ed0f9b43972e77e85ed2d6698bfc79. 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/QZZEB2417610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66288d7d8d2a05ca76ee7f84805abb8abaf114d14b7f354f719bc5f56ae74178. 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/QZZEB2417659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ef84344ad60895046907cd24acb8a04be470656078230b90ff215b2b93005b. 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/QZZEB2417669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2597dccf951e4bea4a5b89ad17b2ebafd78126d55bb4cd14f16ef3c2ff1e5b5. 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/QZW9L2285156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfa528d0f4cadc509579cdbdbffdac618dcc1e1cd972168fb2c9e1085936fa5. 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/QZW9L2285158.