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 0x98fd36a1fcab512be213fdcdd11437b3d73066cd9e090227aaaed220d683405a. 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/7b478bcf-b583-4877-aeb5-326d199d7fe0.json and https://artists.proofprofile.net/proofs/artist/7b478bcf-b583-4877-aeb5-326d199d7fe0.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 0x06872cae3aacde20cd0f569a3722e888204c971cf97e542e1537deae51d531d1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:07:23Z), 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/BRLSR0700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ec34aa59cf663a74b2ba9c2ea3bb742dce4f0e381262512ba4c57d16c67f50. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:09:42Z), 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/BRLSR0700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37126848efd49746ea5ad46d70ef73dea295736baa6c610476d330b5b0ce6fb9. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/BRLSR0700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54cee6f816b3758b9ed952247b57a01939f93121f153a61cab9211a3b9cc14d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BRLSR0700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc8850c51c43f1c920fe0d7ff330d34e9cb697ffd7737c8f7110cfc9f3e8906. 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/BRLSR0700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2a049d4179830f510bf222ce55d67b136a444a98fdcb996e1618bb529b64dc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRLSR0700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61209f75df946563d684fd97f490e047415fa4c6052279744d4527f36b16c61c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:05:30Z), 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/BRLSR0700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa0bc452fa758ef300c8a1efbb24f94c126367a75492c4cd8440449a0a601f3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRLSR0700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43654f8364907a7efe22a4924d95d0b7940e68dffc0d08f191278f818950b270. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/BRLSR0700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a771457e4da6324c2a0097b9104d3fe3ed134c69dbff9cd3d3c06f3ed023e4. 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/BRVWD1400193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf932e6efd87e595976e6551c3aa37a40ff641801ff57229ec05eb16627ef63. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/BRVWD1400194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b1c2a62898b34ae9f573db52857d1fa708ec075ad0838eca776a3931de019d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRVWD1400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7fdeb0f05c8994beb75c5c26fa5e4a68a5d530ed33cc80307536924743fd8a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:51:45Z), 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/BRVWD1400197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfde31010be51dbe9f8b080c11eb76da094150c52073f7c534ad04c2f822f63. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/BRVWD1400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c586b7c4cff7ee704708c3fa66a8ab16865f8d62d06a6d61c8e2ec261763c8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRVWD1400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab6a069588b811bd909a7e768bea0b578466f8531fa1bc3937ca1925dae7cdd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRVWD1500431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da5516f91bb3489ce0130c90c0082fcf73577068bfc42d82c9002ded9aa134f. 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/BRVWD1400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc90a572876cdb239ea9c709ff40080cd708afe3c3c94e1482f48adcb95bb22f. 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/BRVWD1700083.