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 0xac61a9cf184166931d5c488e06af5c45525bd9f88dcc4316a3d3fce4d6a6b8a3. 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/149e25e8-0455-459a-9656-6b150442c0e6.json and https://artists.proofprofile.net/proofs/artist/149e25e8-0455-459a-9656-6b150442c0e6.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 0xe3eacb2d18d945e53dd788c696e71529f0a22da644b0086d5fc0dad37879ba2f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPTF01414201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f81fafaf471bda8ba98ccdc57c192e5de6fc8152c11daf284eb4f513d68637. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:30:14Z), 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/JPTF01419901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3c36510034de0fd50a4a348696d80ac898c97b9276deda4f9e72778c0025fd. 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/JPTF01513701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e25cd012a43e3b357ddde429167a80adccafc637e6abe3a3ffb14304def5be5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:07:40Z), 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/JPTF01513703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2e1b94c82d1e531bbe4e89cb377b31b99b74703c8401f8fb0ea4101f5a0dd6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPTF01703501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb699845d27aa11c266812b90646f3e8518b8ed309b3eee100cd4b6d7735064. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:17:12Z), 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/JPTF01616201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ff80015f9ec7c8201f956b3c8cc0d6b46b71008e0b2c238916b8125fcea94f. 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/JPTF01609401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22151b58047ac87c870d5e4ae3f062fd829189a9fa2f90c713c1a29b3cff652. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPTF01703502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f12dc5fbe47ed788480461930eae1a0882f2ac975192f58b3d761f40dbf7ed. 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/JPTF01616202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa567a3ce23cfee57739f67015413a10cc2e8af913df55038c85f99e10e08ae9. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/JPU902401803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75edb9a2425f598407685080b3ba0d875668707a911dbcace06aebb8e7728bef. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/JPU902402990.
Will you marry me ? - Acoustic Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fae132e1bcba66fdc361c283453303386ef7148bde79946388e453fca7dc64. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPU902501399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebcd2079cf46aa36245c10c9db3eeb2135362b9c8e1ae1724d7a52f0006a3fa. 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/JPU902501400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2b96aff793bc06a2f0e87074755703dd53c33208f98ed6bc396c467e19ad40. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPU902501401.
プリ～ズ...マイ...ダ～リン - Acoustic Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5e0f4319d175d3957b8a05b664e53c13a6cd2e85f37856bb3cb6f3e12adf84. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:17Z), 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/JPU902501402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ec90c9654416218e7e7b1a7a5cb88e6369500b91cf1e8c53c1a39cc24277af. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPU902501403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bb19600f170e93c987d87074715cb6969f1299f1ce2176ba15cd33e2f42a15. 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/JPU902501404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa69a89dc06986b935f5c470cc997c9a0cefa988e92bdccc1bfb8a0bdfe7717. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPU902501405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01d37d026bde6f6f35016799ea65634cc084543a0b030df02c6de218d27bd0e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPU902501406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f7e3cfc5b6620214c19b986ef898e733f4f9fe21afaf871f3d1b205e203fd8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPU902501407.