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 0x85909374cd2877eeb6744c642effac9241c3d332d8c92a2c0d11d0af90a972cc. 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/fa434e7e-ada8-4af8-8d4f-4a85a785ba43.json and https://artists.proofprofile.net/proofs/artist/fa434e7e-ada8-4af8-8d4f-4a85a785ba43.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 0x56382486c964220373f35f234a5c6af7b61075ac730941525a252e971a039d29. 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/USCGH2125430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ef9c2ce321eb7bb573bc8a933b0094ca6e5dbc84e209c0fe81714e04327d01. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USCGH2218353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5cc64683ae30ed8884b33d57bafe4538c31f638efc82046036a78628b7699a. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USCGH2231760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9103076bc03df7db0e3d16abac3a4b71b54fa22020c29d75c986b84a9c4b752b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USCGJ2210563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059cd4bcd565ba19986a5a98dd7fa1aca15db2901244c2a046b8b3668555f1fc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USL4Q2212663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967627dc68d4f4d0a0cb9c9e94faa0e70d0d0b43126c713e2d4db8da7713fd03. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USL4Q2212664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1e354c4663d317a2d75cdf6f7eb58f094996dbc979975a2605afbf19d65c47. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZRP42341840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73858524167efbea83e15ddc1a1c784c2e29b23d4b155d68154569a179ffa278. 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/QZTBB2459818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcf6bd1cc7707788f1e6b8d62ec097f3196951caeb166b77afee6873ee20a04. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZTBB2459819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261dd411034266231fcb6b17fbc0f7ab672c5eed126ca91ea30bff0d4728ebae. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTBB2459820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f25239545f89b9687c47311991db540f6f96d75c3ee76eda75fb07390b21d7d. 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/QZTB32574348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01add41414195ec4bf9af3e5b139a8d8d497077962e5b5780e682ecc13af918. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTB32574349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af0e3400479a401f3f29f568db76dd4e3c2ba14a0fd12abb6042a51001cf1b9. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTB32574350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4033889a94e279135663f69e49bc599cfdd2a8b24b2304a2b2acb3ce0203ae. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZTB32574351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005ba4c7c8811f127fc1106995563f776650b00bb31379b3752b3fad698b423a. 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/QZTB32574352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582691b43bee1773c002360b8651578e9ae36f2b9b2db3243eeb500d7aaf1a41. 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/QZTB32574353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6afd0394be7e5384afae6d65f133e822e97cc2fa3d5bd1770744c98c6ac808. 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/QZTB32574354.
Holy, Holy, Holy (Savior & King) – Tag - Live in Alumni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485495ddc64e582d76e87e36fdbb9b4e0d8e6525835cad2753b501731d087b31. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZTB32574355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1341dd9765bbafaf24f11818ccf75ae6b7fade831be2861a00b2d4cada8342. 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/QZTB32574356.