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 0x196d401fa2fff228cbbbf4c93b53a9adb57d96396465b3fa3cec0a93d8a0d150. 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/2ce25020-eac1-414f-8e4c-cd3202920fd5.json and https://artists.proofprofile.net/proofs/artist/2ce25020-eac1-414f-8e4c-cd3202920fd5.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 0xed469823cd55a7e94197aea6becccb35088551b677702ff43fb6c9543f6163e9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:06:11Z), 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/QZES62342868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a30de25b4b13400cc3b85d830654052b1462bd094d8ee782de0d5280966833e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES62342872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc165a5694f8fc6e61fcab7523fa1ab338176c6f5956e4f7601f669e4b84781. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES62342874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43164e2b359a5dafc4dcef0b824828338bd6da2559694ea8b0530dc827c1817d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES62342880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98c61a5d3aed9a08ea970358ee0d7a70fb8ca56fe7cf67c5aec2f0d30a5877d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES62342882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01227acb0ca6cb36a0d60e89edee35a48f1efd318191b06f64829691bfd190e3. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:07:17Z), 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/QZES62342883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7f490e6c980c395584c31ccf1211e267c361281717d68dba69d95e4225b31b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZES62342886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538176fd68df764b80b6222bc0e6e9e1336b447f7178916fc7c1e29c8b3f555a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZES62342887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0104ff9d6bf7c89620f91c189399931efc359feda4d6afdd52f03b3b8194a96a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZES62342888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe6258d3dcf2b3469f9fe51fa6c22a741f69db10c115373989be46ebd574fe7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6Q2352410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e102ebb470ac4e1c03182b6ffb277b545d0e1dad8bb78efe9f58fbe52f7120. 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/QZK6Q2352414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401fd700476ac35605a3d77ce485b4dbb9f07e22af2dde52f9354e809382909a. 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/QZK6Q2352421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ec4e10bbf800e042895171fe0b97e8d55a6f2b218d72a56a9f59b34bcaaff6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6Q2352426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe596b54c458e8cb4f9b856d595ea45ca55822f8bf48261691458ef56adb686. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZMEP2372413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a3f5ca15dd1478e4e178c050a22d5bbc1611ecf8147096ce90a9c22b3620b6. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZMEP2372415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2c8cfe5dce5a5aea0cd8d723b897f891141a5744932a5e43eef8e93e6b3f23. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZMEP2372416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b594b87c236f32be3eac772193400ea908e8dda5167f3019312064a89ce953c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWV32397093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f01f13d36b601e6f04516ce643cf2dc8b98cf2c4c3db5ec9055520f07e7d83. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZWV32397098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ba667d793839abce755febd6bca0cb6c61264d05c8858d9b38526da5469086. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWV32397104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fd9bba2c75263de4f73988e9a50136ff4defd66e6b5b53b050825eb33910de. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:06Z), 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/QZWV32397106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2fa1723e7123f3af5eb2fe35221b48be1e7ba9939df584c693d99e2599ec46. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZWV32397112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975f1ec29ea05d9064810a10ce2f18acb10d97767744364df6eca440d3f0352f. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/QZWV32397115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75da9ce655c241dc5b6fb840d6c2ef634857e8e265312642e321fcd8a5801615. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWV32397116.