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 0x6146081d16ff1c7fb5abb0507544e618e33c3444a71e3932743b04f06a21f58c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98d962a2-7298-4927-a0a4-5a6f07595388.json and https://artists.proofprofile.net/proofs/artist/98d962a2-7298-4927-a0a4-5a6f07595388.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 0x801d78c2a8553a63058cef9408d8257a8e2bb03896f09d686bdf917dd7dd0ace. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/QMF921850298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe034fbe38b68c530105a6d0bb0327ec071f3b09cbf03a996c944a3822cd7fc6d. 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/QMF921850299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271923876e8850b96ef5aca5b2dc277a0fb7471aba2f7be4bf27d0461d68fc27. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:19:02Z), 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/QMF921850300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a76270d2e479a9c1b36cb22f0c77eb49a2b9a17761d32fda4184e73668af948. 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/QMF921850304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975054e5f2dafd829358fa6b7bf9a0a9c2461c461488bbe312a4d852cef74499. 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/TCAEI1916135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c676cbef267487bf8649cf7d8850be12d5e83f0489adf2fefd33fdf07997f7. 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/TCAEI1916149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d33c7c259d45280cc404cae0522e4b2df503a78ab7813c6ae8325772f35a846. 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/QMF922050174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ed848378d380e2e83ef4320aa89fee63e87aebc8e9bad1f89a016f2a3a7ac1. 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/QMF922050192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac35197f16a10b8ffa82ee732fa9fb754b7dc888dde0bd776d790fd87caea0b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QMF922150165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc862c2ec9579a61f15596237716ccf0f9e5ee9ffcd39d5f7180aa40d8a5f7bb5. 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/QMF922150167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fb0b5f1fb9b4cca5f872ce52bc36271984873e514324c3c77981ae675044ca. 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/QMF922250026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97224f4781f1c807a73056dbdcb9f21aabb874c82663c3c4402ad9266c499c5c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:56:52Z), 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/QMF922250027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6990fa516b6aef70d3e81344f81a854fb527500984cd52f75a4d86028466b2. 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/QMF922250028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106345c1007de7b046da3b4da70ce1d8c4c0a0a7bbcfc18843aad50a5443b783. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QMF922250029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a40e4ced3da46b3a04e6cae4e9cf843c4b9cc76309870592841a4be18c3aa9. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QMF922250107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461d2c5d09be29ddab2680545ae5352e96323b9428d647139b71872e0ddf82a7. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:45:04Z), 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/QMF922250108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093112c491442112ecebb266aea7868b9867e7b322cc0e753e5c98ce660b91ff. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QMF922350226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296f6123f6d7db3f703b5e0ae811395a0ab4fec5c3449f0b2d695141e25961b1. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:42:36Z), 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/QMF922450003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc8f37212d8e8e5dc097a307f123cbbac709865542155769df3c41dcd14c003. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QMF922450163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8195c820a02a243c766d03b815ab59943a55f3aa9c1b8767cbcc549e3fe2787. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:36:25Z), 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/QMF922450164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9facf1e19385dc07f42fe00340687e56263c4048c97dcc7575122c514279fdd1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QMF922550086.