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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071c04f78ef2061da31c16eb6d6017c09d8e5336f7ab171bfda9dc17578c6728. 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/9fae8a84-a694-497b-9699-0529e85fa864.json and https://artists.proofprofile.net/proofs/artist/9fae8a84-a694-497b-9699-0529e85fa864.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd82baf699723b7d94d70909e7fcf9aaf9f67a504e309a55078636718c66737c. 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/US83Z2208698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81110ac9b0e2df7b5865727fda203930e54a26f92e0aef0e1329c167da5cfcb1. 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/US83Z2208699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83820b62df933b26fc1a9252d518d59aeb775a53d26374055abb5d0b94ebadb2. 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/US83Z2121501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944b3af216b8a28c55bee2d72c2c612690568e3dded64b2e93d9cf7f5ce99d77. 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/US83Z2121502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a5e20bf67650d6e7a0213bdc9915b6c5f8d0408dbf8dba323bf248395d263c. 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/US83Z2121503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3c447c6dc35cc46a8c0d084d86dd1f1e4b807d62d60bfacce325be47adaaaf. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/US83Z2489227.
Human Energy - Shadowmaw & Darius Rose Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5e682f53732252a747a51fe9af471e0243a26d54c4fdfeb09e8721a23ca39d. 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/US83Z2489229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e5fca9c83c21c3210386b13f2dc660516dea5bdeeb59b8eb202d2b672f42e0. 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/US83Z2489228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f7ee4cce038471ce722d3096c439ce7131a57db5a10b0cfba6d3b7a5b88919. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US83Z2476408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9b499b1e2cae7cf5b033ff73607522e5c6cd436b88ad12f575b82ae7b6361c. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/US83Z2476409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654247af06baf621a020df6980219626300b3bebb7edff6ca952e41078da34f6. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/US83Z2458877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8a750603583dda8bd79cbeaa9e7a0ae850d7575a64ad770fb8d6539b992fa7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US83Z2458878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777ef9c4363534777f017b8e0af04f4fafc954b19b65675dc8b56467731ac43f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US83Z2350626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b2492a86096fbcb706ee116d818285de5ea67d5a35a4f71a74035a1447edcf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/US83Z2350627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ce44e8460ef5a808958458b40be7307a52cfe7c8613d574c530143d4aa1de9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US83Z2321058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2250269a653e381a3138abd17a909f989a56d6c3aec6aa4306b7ef88e7d6de. 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/US83Z2239453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe50946aa188e563a783030437c397c9d4d8639455fc6b0b360ea3dc5266cfb. 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/DEH742041557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb16b6b7b225974b555c0690a2e7ae8e32b2d5e9997ccc15355f688048531875. 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/CA5KR2065499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14872166aec95a84c3aaa4ac1895dae57ac8991ebc49bf6d752c9c8b3526d083. 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/CA5KR2065501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e7babaf2d58e86997ec7e73d129a351b76e6fba0bc18f6d152318ae9f1721a. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/CA5KR2065502.