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 0x7f49de98cde870d27b331a1eecbe993ff7e96deab8c875b68adf3cd85dfc7837. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/becae0d9-d4fd-4cc8-9ab9-6ac9d7802548.json and https://artists.proofprofile.net/proofs/artist/becae0d9-d4fd-4cc8-9ab9-6ac9d7802548.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 0xf8a774ef367afdffd9d2ea32a1936ef37669cac020d842b96b6ab80e37632b79. 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/TCAHF2399219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a371c0c74605ad1a9850db5bbb919cf40de52999fa4fc51a683b178cbdb7cf. 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/TCAHF2399222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43eacd7b36c9f0936719a0df4c4c8916521040d4cbd5339707c06cdd3a01a19. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAHF2399223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c01f1b8de886c7247b42bc27500ba35873b2b677f7ea267f64159250a0c0a2c. 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/TCAHF2399227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f7bb2cce53932c4e2a0c3b0701152205f03dddd508f5b78f3549622fb4f469. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAHF2399230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a64deef301705acf30d03679486d41ab20e5d939bb5e353f2055a76cc18673. 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/TCAHF2399232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4776440c9ac548a448647be0d4cbecccd2430682a3f1d3ad1159c6f9400aedce. 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/TCAHF2399237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa635b837568971cda2a7bf5a94a27eac16246cc3bae48c533ea148ba12b81617. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAHF2399241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13555898172f4d5b38fc47d52984dd285cbf509a088b13b3b3ac8f34fae1b626. 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/TCAHF2399245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268bc91fc014c5dc0110aec2755085fea8f47db569975feb189557212f11baa9. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAHF2399247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf0b71e8fe97084e240dd11adf3b157df048d6fdacfcf33244fa24727fa0c51. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAHF2399253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6c5d44c19775291fcb9f158b1bfdb1277a609efdb6c2df8c4186d2cc91e2a2. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:36:38Z), 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/TCAHF2399193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7f1b39d6feba9866a3eb712a4ccefe570fc19545abd300754a78592ab881ba. 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/TCAHG2323799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d66130161e1ce5f55e7a4f9e6030a9bf49ee1fa701d103948e00eb5413fc85e. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAHG2323801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44233e712a78a5dfa59ce26291dc9b85534eb19f5fde7e702b457eb9c650eb83. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:13Z), 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/TCAHG2323804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fd9efe52ceaeef1a2ba63c1d2b09aa75facedc9f77e299c351123b2cbababb. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAHG2323808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644eedfb34183d98a39c7f3bfd6da991857d659fbd8b8acfbecb1da9e136a20f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAHG2323812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a9aa2ab69ac70004798add2d75b3d2e2a880a086cfd354abbc1452445d0850. 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/TCAHG2323815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6142d9e352539e7193ae17fad6e86356456566521e984d58cbd26b4bc06048. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAHG2323819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838d10bccd2fbf6276a854bf2f2af844a500492372a4619e32fad8b90f9851d5. 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/TCAHG2323823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e32974982a8afe3351c3a12fd47720469894f7f5676e29c053edc32897d57f. 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/TCAHG2323886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61356101a7b5cda4c5ba740e72cba008168ccebaaa83ecb63cd6dc0001741529. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAHG2323889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eba0782a027c51668713effbc9c778aa986a83be0c31addae56e0471c1bbfa1. 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/TCAHG2323895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab30b78eaacc41921edc83aaa50169d8035e3b198a53559171c83dbf378a322. 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/TCAHG2323902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83233fc35acaabfe5349ec940e798605154634e5634bbebc6895921c7c31f7ff. 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/TCAHG2331393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6d58cdf5962d78b331a74d7fd1230b170149bddfb2e2eea30c897eb8fdc64a. 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/TCAHG2344971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4db4432ef879cc82835a4722e0bd5a4109e8f72a62d0c3e51a61747561bf7a. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAHG2343867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5948322f29e02b0c2ac588a3e8e66b6f026cfa5419c45327fc6f64c12018bf0a. 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/TCAHG2343871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d9b33bcf7b959b9a4f6432854ae903dff9e576ae9eb8ba2ab948c8104035bd. 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/TCAHG2343875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f290c0c3a4bbe2ebaa7d20b4649557865c2bd9448b7a419692d681b5f15bc7. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAHG2343878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c3717709ffd0a2ccfb4ed5aaadd6fd4824db4380abd2e7340574aaa8882a5e. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAHG2343930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe900f96ddba98c0d559ac1a7e69962205b1c3096433145acc9c468f252d29ff6. 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/TCAHG2343938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade0b2be9c2a104383716e34541dcffe4868b1681dffa94a3601755d466ae763. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAHG2343944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f202e6df1c909ded6bceb59773466e93d39d3b5edcfc1f333d67e59c88366b. 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/TCAHG2343948.