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 0xa65feb47b6bf2c53e9ebfe2fceb3df8d2c0389d7be63c3384564788c6dd67145. 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/b4507031-7fba-4bdf-b77e-838d6da14a20.json and https://artists.proofprofile.net/proofs/artist/b4507031-7fba-4bdf-b77e-838d6da14a20.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 0x869275fd3246965010b3f5d4015d824bb94e12341256fc9983a0f329ea849366. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GXBDT2380660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea2b5e7e0940e489fe767312c7c35484c6e279ffa3cc853f8dc6ddb61f3d5a3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX89G2548940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6d99eff16ea294fe46a604af4349eb9d2febfc80cc579d267f6b10a221ef8b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GXFHP2407902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da5783dac98d638d8cc139eb345029cff19d375bb775e2bb68f743e9f7fc683. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GXBDT2488566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9274033a063e9d0a036cf0a3515774ea655f871013dc17819d1cfbde2b4c8c2c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX5MY2436141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f994f46e01f8ce6b4d0c109632d4ff9835c6a9d52ec56900db7a3cd949ca47. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX5MX2492976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b93fae76a99109cf5dc5fc7e4d9a1a938f86b781a51a769e15d2922eca6d98b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX3HH2444176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deafe0fea6533d8b4137c41f3a15144040e8025913dcbf1b872ba02484ab6ee. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX38U2485423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce077d498283437a9cc3d14c14066a9b8cc6a73e3e5529be2a3b00f77fc4768. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX8LE2416288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190235b328290fac9732c4c53fa2e08bd8be1b933a5ccc8cfac21be2ec361e1c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX8LE2406637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82db27a81c90a276d04a22e0b7a3489bcef395d89450480191e291770263bf35. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX8LD2417752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d70c8f1093854896a8b00be6eed1b9341fa6b09db99af747d49ef0eefe067d8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX8KD2477627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ddf0d0c0bd56265adfb6e9cfcef65fdaf86db8a38921bf470b00ecea572ec3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX8KD2420074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9021f9a430d82e4734dcbb5a2ff767bada64cdc52848dd1c33c69378b7d956bf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GXBDS2345164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aef69669758f32909267fca7050ae3e3fdd09fb76e48308f1a94d24ae524508. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GXBDS2322194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c864ec50877aaa2445435d68aa2cb5c049b766bc5b819fb7256c75798989810. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GXBDS2355739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57777bcde6b63503ff1d5e1b8e31c5acf2256ddf6b9753ecff41cc019e73e264. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX4R52322824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d3afd48fda7aa1c4267a5a0a840d2f44a06e0228d8f580c01b8e919a00be61. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CAHQJ2277691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43489a592bb7dbe9833608bf82b9ad1066520887a82dacf2f5b75028ee8a800c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CAHQJ2204238.