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 0xcb3563f52721fe923c55ba7fb236909dd3f4b7b2014cc9adb14fedab78db188c. 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/d14badab-0347-4e55-941d-634a82b3d30b.json and https://artists.proofprofile.net/proofs/artist/d14badab-0347-4e55-941d-634a82b3d30b.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 0xc4c4b87063a1b9e3ab0e0d5f0dc2993463217b2309e2525396ecb795d1a70ab3. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/FR59R1733984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fc76a2e284a5564a9491936fd102e6e8ae052f53f8a8c4676c51c25cfebd20. 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/FR59R1733993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9582254e59e54d16dbc97376338dc382cb15f60f26d81b0f97973446a6c1dd94. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/COA6W1800266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8a2daa3b9c3c31e7624e0f76bd5545c29a57ad956c5c80fb983ebba97de671. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:49:37Z), 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/FR2X41787231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3828440cac3c9bbdce32bafd55c88d002bbe895c6e473c87f3dbcd9c2f3fab1c. 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/FR2X41787232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469bd6f24945a91d40764c3d6ffbfd8bc11316a8c1f062c57fafaa20c0bf565f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR59R1733983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dfe80ca7edaddba565a8b329ae02cb74faaa82b83f977843a32f9e7dde77e3. 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/FR2X41787234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe356adc0fed86bff97b4407920801f334d3c4cdf5cdfe6e88995f1968c0ae40f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR59R1733988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bb988ae6dbd2e0af517fc0d72b5fe6d6547f76fb70326ed5fb04d81d2ab46e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR59R1733991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7973d98a35b7c5265762be181803bc7443b9e7cd19a4c240ee7613b0acce2a6. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:00:56Z), 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/FR59R1733996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99ef3e7df54eead6220b0694a68b292e2350419bf5217cfdfb297a8601c152c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:15:26Z), 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/FR59R1733982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fafeb1e5277d0500d3f770091d06d55b3551e60641ffbd907c54962abb512d5. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/FR2X41787228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff0045c6ace5ecb137abb725a1e4e27d1b27bab21793e0c926dbc2e9c58a0ae. 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/FR59R1733981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd8419f415485c1453aead395d802a442869a97c2bbac042fe064a9eef1d5c2. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FR2X41787233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86120146345bbe24414ed90d60ae8428345e2808e5366a8ba0b39b6783e7d090. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:44:49Z), 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/FR59R2002499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2023e2ec252b4c333e89ba222994807198d7cc63ab5bc9e53e6e6432f79db3. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX452138200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37ee60b43f585f193a54733978e12ca5394184e4b631125812365f5943c5c62. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/DGA052511942.