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 0xec12f720811c75a289d1d2af2ef2ebe60187050937e901ec922daabaa5bc8762. 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/06851b2a-9213-4858-aaa0-3e8dc54d15c5.json and https://artists.proofprofile.net/proofs/artist/06851b2a-9213-4858-aaa0-3e8dc54d15c5.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 0xeeb68ef98f66428cccad93d1c5f90bbdcd9016f8c4cefc9684b4bbcc329d37d8. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/EGA251706108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47da6913d20f8e9bff00c1ad17d524c063a7540fe2d6fa41d8b3fe1b2c5bb72c. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/EGA251706105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fff993948350fa5f00b0d31a5bd01caa15de27c1148570dda4724872956e616. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/EGA251707671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cff6b02c0f76c5d21345494759469a80fc5a5494b021efa555ffc5508fbc55. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/EGA251707669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7f56d5423fcce13b09a6a75e15cbb277b4f6e2a882ecf078367ffd99f5121a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/EGA252203091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f4720d6af2ced9f1d75cabcd60d8ee5a73a82b2acc07b06701d045f45a72ed. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:31:59Z), 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/EGA252204408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df58f68c97d668836b80e129eaf2436c7eaebdc996c4bbacf619e6acfd99ea7. 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/EGA252204406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43412c2adadcd4a808421e49703b14c3c957e83219988558a73397ab3db82efc. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/EGA252304345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b7d42efe9c9099d1e86cae944c385696669187bdcf27c70957e9c566d501e2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/EGA252309643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5b3d74c65ef4721e7c09eb1c9a8b36bcd2a31d866f9d1aa4b3efaaab532d15. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/EGA252309884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18c4fc1fdf6959b9e2c5494abce5e2bae7a81abb67c6435a8624bff729aba49. 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/EGA252309888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d064c6e7d64714db90350a932dd0c70356ebff304773566511b2fc84d51371c. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/EGA252309890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ffaeb7f683d93b624cd3b37cfdd2150dc49b0675e01acccbc18f567c50ec85. 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/EGA252310662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4f3eab8306cadc50855d121eeb43a88a5056486fcd7a870e666a31184d313d. 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/EGA252404117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a09bbf76d914a9a28bdba3b61d0871a335f333112d5e4063f5f845822464ce. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/EGA252408102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0e50daf4c3ec6fe135b5d21f7142ec3d8f54e1a993f541b5b22c18cfe32de5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:42Z), 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/EGA252500641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc5119463f228e782ab3aa3c56a470be0d4ed7d316a94f1cecc6e298c36afc5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/EGA252510942.