The Heads may refer to: Music The Heads (British band), a stoner rock band The Heads (New York band), a psychedelic rock band The Heads, a band made up of former members of Talking Heads Places The
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 0x2f6a3663788a830a141c6efa80ce5af82ccf4439ca9a5b9084be0fb6c456cfe1. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03b6b6aa-4030-461a-843a-3aded219cb6f.json and https://artists.proofprofile.net/proofs/artist/03b6b6aa-4030-461a-843a-3aded219cb6f.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 0x2fe8778612eb57d8bf231b0c9561f7b32822f2c59abce9357191d7f5414543b8. 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/USMC19650145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423870b3bb4932767defe5497a18b8985531e9c8593cdc6ec2be537abc65bb2a. 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/USMC19650146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d7da8b6865f3c94615e6f6a2e012916cb4dd24de36a317fed1110ff3d541b3. 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/USMC19650147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b9ad02e867c794e33397b7494273740f998e64b5a7558a5000601f07f169b1. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USMC19650148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007b1e42e97e58b48048291f1e3861c88b2cc4edf1deadeab2100a2db2313e61. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USMC19650149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cada3b1891822c325c92e0fc858f44c4bf7fbaebc3a1ec88514e4381d44e32f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USMC19650150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2b6b7cd27327279167ee63bbb33fc37f75cd8435f8aa8d4acdff36f96794d4. 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/USMC19650151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b780985133ebdec5dba45448978e281148985cebad946b7152ba3afb805daaf. 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/USMC19650152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1555e6f34bf7dc3fbfd40f945353ddc3a65b4f3fd5d16d040624a08559aeef1. 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/USMC19650153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe424ddd5691551db18c417fcdaf286d4df7af9da8da99e79c6ac757d6fc4c602. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USMC19650154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2b212c6a2b8197f226bb4e3fbc83cf253d2ca13ef4b0dd8eb80a50526212ab. 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/USMC19650155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712a77c79d8f3bf778903cf2f9f71163df0dac62ce69f61dc99f6ef4e605ea69. 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/USMC19650156.