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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c59c27196ae3b48ec5c5390ad3ef303ebac3202c4ad8ce41714218611de9895. 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/3d426a29-01e5-4a31-bfd1-45282642703d.json and https://artists.proofprofile.net/proofs/artist/3d426a29-01e5-4a31-bfd1-45282642703d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58212f4ce1374c04b83cb0aff949978fe6e12861730c848dffbc0b0a68e28519. 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/FR59R1655706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb7aaa8d6c52157511e3c757d5f426e0bcf482380aaa8daf0f503b6f0c439b5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR59R1655709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0cd07d4627c3f8d814d8ac87e0a2d980eb4b47ad7fe207f97ddd39bcfbb887. 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/FR59R1655710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd232068efddd40aead7a26db3105534a5cf58cb0114232fc3b064d7e7a4d93a. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/FR10S1898515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0dd2be559c7833e6537ef7d8dee3974c794fdd9912629d07dda5a17e5b759e. 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/FR10S1898516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42c026279fbebc4c7ac84dabb9557c1c117d18cfa9fb94d4d8d346694fd9616. 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/FR10S1898518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca47112de116aac5ab0b9cd39845468a649eaaac8aebe842403e403e2fecf06. 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/FR10S1898520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67923e510e8ee09397ea4e60bf6c059c55dd561888d4f5f8d4b700bc3231a0cd. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FR10S1898521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4ab433874d5e9ed886327f627626bd9ba4e749272b7fd40a2275e50237ecb3. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FRX282223034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ff8dba5325b75b1a4b9494103bba356846b0f5fb430b44618826564da64115. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FRX282223035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9077991658e7ab24b3c618391d368840ca78205ec54e663f671fbc7bc46759e2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX282223036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ae2ca3bcc3b5c4f786afb2ab70c4567f735a55304d6853827bfc5b7903fe0f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FRX282223037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab182b834c209bafc799af75206ed9f8f482e59dd9361a8936ae6dd42f3ff56f. 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/FR10S2377502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949e1f107e9e1617d4d28906747c8c2495342c32c6e0c3ecb10b3eca742a4b4c. 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/FR10S2377511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d5b4d8cb56a20ed4dae072b54190cd7bf811ec14a4cc6c76f605bcbd8aa8d2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR10S2377512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250aa850ae63a4236c6bf2024b4636cd74bc916c83c8abd2a702fec441081455. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FRX762312566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cfae3d3a44a0a25408f407360eccefd6b9f939d1bf9089951d6bda59b35d84. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FRX762312568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e284edcc22b3ec742aa499f178b792deae2650ad1704a28e0709266c16318b. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/DGA092356505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99af1f8043aedda5c9d4dd16557c8cf64b4be4d56d1fce6864feaf3eb7d636f4. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DGA0R2339634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de588f08368651480ceac73ef74fecd37698a1114eaa650bdb37727f04f6759. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/DGA0R2339635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bfeb969bee673f3cc2f35a38ae8f7355f5a89d2249d3f60568709496daff7a. 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/DGA0R2339636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae232b124de62773169cb0ba988dbc88694bcb7c97cb216fd26c70c089e289a. 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/DGA0R2339638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb345d3c6d82c33d38b903d69958884553633b7fd54d2a1d00d0496d66504288c. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DGA072478871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a55a600f404fc4f3fb7a037112eb9cba5001a074dd85bc425164ce61b522db. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/GXBAV2149698.
12:00am (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58c111486a5af9baf508065edb124c68a2f4defad66eebd03b21157a6e32a25. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/IDA401502513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0339e23801368a5926f843157ba97ba029cc722ebef854f567f59ec0ed026e10. 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/IDA401502523.