250px|thumb|Pedestrians on a crosswalk in Buenos Aires right|thumb|A sign in Belo Horizonte, Brazil, directing pedestrians to an overpass for safe crossing. A pedestrian is a person traveling on foot
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 0x8491d4dcd20e1869cbf646142c4724b421d6ce9fd94ed37c7ed7fcbc27aa1434. 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/abac90ca-42bb-4499-a55a-66eb40e2fe1c.json and https://artists.proofprofile.net/proofs/artist/abac90ca-42bb-4499-a55a-66eb40e2fe1c.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 0xd03159f68686c3f38bab3ea43f1205b902d74e4f370e8bb378b8c6b67c08aa6c. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/JPE561703644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4468d3ab8f6513770291640125f5562e8b823af6f24f74d3fbe849f652d2ec. 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/JPE561703645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1fad5fecba132a855f709dbb8a7e2e299eb21f8ef0720e9e0cba75dc8b83f3. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/TCJPK2024683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c3209e66de940a6305ae5faa96d6263efa1b6f684e3290b0cf9dee8ac4674b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPU902104532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618ac9de687ba5879da92e741c30701676314f43e185df40b5b5ff13a0788ac3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPP302101959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c44a50e60253e3074c9defb1717ca3c86616101ba723b3b43c5ea035591b9e6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPP302100416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c1bcee8e498ba63894c162559d2a10556ec6a4ad7de50dd6ea9431beea11e1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPP302200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13edd8c4cd1b2e11ffcb5c011393a10d0fd2ab9d3271a56ec47178d787f3d24a. 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/JPP302200204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b498cefe614e3b4fbfb8be3821d1d1f715303239e2433ae4be06c6ec3d31363. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPP302200199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddb19b158e2b5eecf5558701f29eaa7e821368cfaa6de91480973662367a8eb. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/JPP302200333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2508282996bf20044275a8e97737d30f825f4c969a059ad9c681126be1aceccf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPP302300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ff3bb27ecda981272c49f05e4a9e83dafb5e7029b1d7fa3fa779210af3d432. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPP302300405.
ゴーストレストラン (THE LIQUID RAY EDITION feat. みすず.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2508282996bf20044275a8e97737d30f825f4c969a059ad9c681126be1aceccf. 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/JPP302300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa953878da747db8f8722b0e5f3233034b0e07d8a0a9af199166e25e29010ff0a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPY392100293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05c7ac42378a89b0fd3a6f9aa10c264d373ec8b3c85b54313b62f4e84d07cbe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPP302400663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a2f7b3aa203fa9a8d8b15a5a5e790a23e3b1617060befaf22e825a7a527e26. 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/JPP302500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3074182fe2fd04c410e80bcc2791d53378b5160c4ac4f583ce4cdbaa6bd1b1b8. 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/TCJPJ2572050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa953878da747db8f8722b0e5f3233034b0e07d8a0a9af199166e25e29010ff0a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPY392100293.