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 0xfc794124397c7030261f0f34d89b48a1a1b804b6fe31417b0ea21ec8055ccc52. 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/ece61e84-0620-4d57-bf2f-d6ccde8d1b8c.json and https://artists.proofprofile.net/proofs/artist/ece61e84-0620-4d57-bf2f-d6ccde8d1b8c.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 0x6c5fa6488fbec7adf7f6e5d49acda66c30d75cb06e73121b0e3a213ab2b59a70. 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/ARF412300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf382f9bc4cab920ef189e74cc3da16f86e94bce315ac5540f7cf6cb8c5e9d91. 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/ARF411000515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166c03c6f42c9ad46147c8fdb34fc7836ff2c7a12aba35b83f90ac0a0cdafa03. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARF411000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6e15056bd70564c1d1e4569621cdec66597373196b87b81278f9e105c589ac. 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/ARF412300321.
Don't You (Forget About Me) - Krister Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f824eb8289b2a1eb774ff92435b7dce41ffccc5330e500480ad0533ad1ef89. 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/ARF411900341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620b0c504b3fe99a5e1271fb345891e5edb45d467477f08b137d81853b5df7f9. 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/ARF411200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf382f9bc4cab920ef189e74cc3da16f86e94bce315ac5540f7cf6cb8c5e9d91. 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/ARF411000515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189d1cc5e554255525170d80c368bdcfc69cd6eb7e3214c0e5f18adb28e43dcf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARF412300308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c07501a7fbb43ab1356753fbf4cb0cb12e1f353ddca4ba3fc7a8a982b4a042a. 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/ARF411400340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5fa6488fbec7adf7f6e5d49acda66c30d75cb06e73121b0e3a213ab2b59a70. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARF412300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50584421742eebf57c085c97cb356fa2daa1b34a0c8996e8c13ba04e53bdc9ff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ARF412100384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c07501a7fbb43ab1356753fbf4cb0cb12e1f353ddca4ba3fc7a8a982b4a042a. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/ARF411400340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56810cdeaabe03467d1b760dbcb8063b43aeff7d944eaba6439292e41c485b90. 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/ARF412100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb740e42d518da31f880b27e8e78e7e2dffe1eda034e46edaca7d97d4f169b3. 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/ARF412100106.