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 0xd14c5c61265d11b0167ae9386f9be08d5c8c1b8134d04c1bf650b12c6815e275. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ebe8fda-5ee4-43ac-8176-f3819c0958c6.json and https://artists.proofprofile.net/proofs/artist/3ebe8fda-5ee4-43ac-8176-f3819c0958c6.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 0x1e07263db70a0a081c9c5b3dcf73ff66bb47ebb65f022c563b329927d9eb9001. 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/QZP7F2515815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3af5dfda0e0c89fdc77cf40e6368d1296a1be975f730de6bb6f324c6235e46. 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/QZP7F2515818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ce7754d6b31907b111f5f2bb3c405e0f221884dda00f51cd3408fac9674b0b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:35:52Z), 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/QZP7F2515820.
Furyou ni Hamerarete Jusei Suru Kyonyuu Okaasan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb6aa95666810435a6705aa498d33f136b9dc6dcd51888961fddc411056c590. 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/QZP7F2515821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28cbb5efc74a784d2f52fa61cae08b803f35f7ad44f570296e85f022caccc92. 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/QZP7F2516234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c958480acf28eb243d4dac97ba357c359451a54d04fc4fb2f87183674c5b65e. 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/QZP7F2516288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265b8b34075466d3c25e63f308649ed5db2df6e9333ad0812851814a10f5f28d. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZP7F2516290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc36b0ad01cf2aabc664ab2acd5524279357601f8115112c5c8c6244d60b403. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZP7F2516292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8665ccdb61ea66fbe3637fc47bba6e7d1b9f036b25b6ee01089670ad7a7f3a. 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/QZP7F2516293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13216645f57c63db53afac4cb77e025f53a0d939db281e85f58a3fb5cdbe159. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZP7F2516295.