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 0x0a7ffe42de7ef8cfff7ab2177182a7980bef7c1d05740e465980f22051fe2d32. 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/46fe2ef2-63b9-4c34-95fb-ebd450048af2.json and https://artists.proofprofile.net/proofs/artist/46fe2ef2-63b9-4c34-95fb-ebd450048af2.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 0x3ec96ce99e4255215eaeae95300a4e2b5b10d880336aa215b5e4f1fc0b44cdb7. 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/DKADG1000339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18af5950764b966181be10cb34804d2cb604c5c772afccaf8ad79188c854d96. 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/DKADG0602305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4f94006fa9958387ab802f66316a0ec843cd8f14d8f6aea7a636d83b157a32. 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/DKADG0602304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f6b91920fcb8dd53964fc8d0b3c2f53f29eb7f1f76cdfba3916b7e02ed502b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKADG1000309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09ab137434e2c3be109475e418d9d13debc6f9176018553a0643c629c0c242c. 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/DKADG1000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632b8f24d646dd5709d9eb24018994e91c82b93c8b152df6bc45a6d28200d353. 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/DKADG0800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeee08c41a1820401c2b21a4bd8f6cf4f149e165f4b113c05c1c636dc5a6e1f6. 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/DKADG1100358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c669f162f522da5f95f33866adbd14561d4b87aedb8dec2292a9fa9756543b. 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/DKADG0602307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bf62569f9f1849edf53562c2f2e8f80a58e8112a782079172c5a8cd346dd32. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKADG1200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f6b91920fcb8dd53964fc8d0b3c2f53f29eb7f1f76cdfba3916b7e02ed502b. 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/DKADG1000309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec96ce99e4255215eaeae95300a4e2b5b10d880336aa215b5e4f1fc0b44cdb7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKADG1000339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee8b0ca060673efd8bd4ba7c112534daa1d7e1a87ab96a9973d5fb184c1d913. 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/DKADG1000342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09ab137434e2c3be109475e418d9d13debc6f9176018553a0643c629c0c242c. 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/DKADG1000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838453f3177e631d3a3373ff0864fad2532d1954baa68154d6f189b61ed3246d. 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/DKADG1000334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e243af81c90847405e4d12028a9892908c3e0061c63c0ded83ccb6887e35bb. 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/DKADG1000333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487088048eb893477254cb019e1ad8bfc6f0ee28fc91f59526eb952b1da4e9d3. 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/DKADG1000343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2a3ad4ff921229b7dda59e0ce50583725dc824a34cab8de0702b69240ed91d. 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/DKADG1000337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632b8f24d646dd5709d9eb24018994e91c82b93c8b152df6bc45a6d28200d353. 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/DKADG0800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af6a338db9688718fa32cd181c27d342942b1dcbc0946dfa657814fe72048b6. 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/DKADG0800361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4665c5085df59d822e522696e4dba2e9e9854850eec3f54bfa620594eac97182. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DKADG0800365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec4d7b5c688b06e15a0f251919772baa91159d0a2f33139d8fb044c05868049. 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/DKADG0800367.