The lion (Panthera leo) is a large cat of the genus Panthera, currently ranging only in Sub-Saharan Africa and India. It has a muscular, broad-chested body; a short, rounded head; round ears; and a da
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 0xaf242438b2db383ffb589b9511e604ed016b307a74fb333c16eed36969c3b894. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8b61d75-0e13-46a1-98d8-895c93a0e850.json and https://artists.proofprofile.net/proofs/artist/c8b61d75-0e13-46a1-98d8-895c93a0e850.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 0xe6c61b86067e0c91b3797c1e6c389381f0b078566c5b487d04d0ce764381ee54. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TWA531669712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62838204d4b5d77dfaa712f11f3bd81ed3bb7c3540a4ed127d538e0f947ecd3a. 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/TWA531669705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73e14b20ee83292629731d0d3e3f5c533722a4fc1c6e894897c0bd3eddd7392. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TWA531669708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62164d9971ca49f89eb8cd60e50502d0b03ec7c8dff2ac3432014ed0e68731a7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TWA531736106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5b44226d3f4df54bcfa77255c3fef4b391debc3e1c1e261166c80f317d8c9e. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/TWA531736101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a6d00d3b9f5149fe04a1195637d38a3906aedc9eef3213ee2ca87f17296ea0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TWA531736102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6695fd481a4670e01bcbc069ca5f7a954b7546ff1d48632b5a532d9abe2c797e. 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/TWA531736103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d073961c9af27fbd5d309c66cd7ceb3c50c954ec295905c846753d00f3eb3b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:03Z), 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/TWA531736108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31acf392f88d2304ce2d746cb3545eddc6caff807ba8b754e4ecde66d11f7931. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TWA531736110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8d6ecff9c3f04423fb339ec0172f94203a7e08cabfb7855e6471127864f0aa. 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/TWA531964307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0039201c8ba9064df96a3f6c3041e6bdf0e515c1ff1c315b89415f3ea3c7520. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TWA531964308.