1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x6e0a22b3022c9b34a781fc04d931715e45ac4d8581a7c2dd913c1824117fc352. 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/cf5758e5-96b7-45a7-9fce-0d42a0e0231c.json and https://artists.proofprofile.net/proofs/artist/cf5758e5-96b7-45a7-9fce-0d42a0e0231c.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x7afd365def401dec9a8d162f1875b19ddd087776906e05281cccad634853bb04. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:50:54Z), 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/JPB602078712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008285a9d0d4ce60d23ee6bdde53131a4d81a4070854b3c821be80ebd4a6ff26. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPB602078713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92205ee9e83ba3754c08cd7e7e40a46e09a98b5fa778d0d4cb24d56c6dbc9c2b. 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/JPB602078716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcf056ec5ef17c9949a0758dd0bb06ee258ae06e542ff541d02967a08c485c3. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/JP92N2247680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002fc55e5ed38287b3d10f22dae644bc4cfa379affccfedd2c088a58d9f20ad3. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/JP92N2247685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef4ff16b89cfe65db30ad328dbdec3e2e6409b44072aec18aba1df8d5fbbeab. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:58:10Z), 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/JP92N2366063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe083395c336073a76ea33a476a37cda7b29133270aee0a815163dbee4989dd66. 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/JP92N2366064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7c3802688b3bc4efc4fd11849f12fc523b3eca8c9794272f9cb451ad69ec88. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/JP92N2366065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670d3b0be57bdf1bcb13794f2f291e222967e165e81049dbd0e2e3750ac7d9bd. 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/JP92N2366066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3902ae6da955e53a28f49572017ae31e04b8b779841f175daa9311f6d38c7c59. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:11:23Z), 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/JP92N2366067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca935e6e1202c9b58b9c3d833afb6465ad3b0b4dfb20e76903c83c8f4f5ffda. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JP92N2366068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e842775c5a5fa7b01d7d67815c863aa2f56ce8ea817a72cfead87204aaf378. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JP92N2366069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd936de6b82c3094132a83f510930894274609bfd6dfd511a4db392a8f50167. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:06:12Z), 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/JP92N2366072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dc36716e08d565da8470b133cbbc59a48812a80a66f1506094d8345c185f88. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/JP92N2366074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd14cb05437476b43396074b2a1ad7e1c902c7b04adc8a7178da5e2b73cd5dc. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JP92N2452994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a4ec466f7b19583e07d66aa129241bbb52029d0f73bda3aa5c1934cd211d97. 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/JP92N2508707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ad91e48d7ae7599e7b109f3b8f31649db24f859a24f803e6b0966b12417c40. 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/JP92N2516646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47372c1e1447751f8c3ae82aaa34a3f7f213521d999b3e424fd5250bf86e14a7. 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/JP92N2516647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc1ebd501da78ab7d4dd8f4a778221cc7d2c1b7abe660520c9980b2ed89dac0. 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/JP92N2516648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f0173a55247c11bb5d23f2618bb970ebbf69cd5597a2641cd1e0f2717df7b6. 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/JP92N2516649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1dbd99a8d49d4dc42dc910c780ae63bee85be42d25fa8cb04d9930747edd6b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JP92N2516650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b844ae89f6d193328bf911cf065822e337ab90585a477f260874243fde99952. 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/JP92N2516651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9513ee7e03b4819b71900a5cee3e44e3aeb2659f6027687799804340951516. 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/JP92N2516652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36f0fedfa34418ccf802eee9899f94e90249ae727b6d8c6e662e38a30374643. 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/JP92N2516653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fa10cf1a5265c2983da9547091413cb419845ffa4af10df3dacc6cda8f60bd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JP92N2516654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729dd810d0791914b585aac2b44961c15fa84950517b7331254d5e1bc86a0b9a. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JP92N2516655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6de7b80a396abacae922b0252bf03e75df3d401f8cfe8e73928933f29e5a3b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JP92N2516656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde55cb452e80fb62c207d68c2b149fe7047fb1f0b43bc6386a6c359f8632b1f8. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/JP92N2516657.