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 0x2a4d9cf1c2c44fbdd71e8ec0f0c07781a2ce3f682b20c653ff4c61001c955060. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddc344cd-0322-4b24-ba9f-0952cd4f2455.json and https://artists.proofprofile.net/proofs/artist/ddc344cd-0322-4b24-ba9f-0952cd4f2455.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 0x5010ad8f2fe948fd5be60e87116e7c19cec02716880ff3b9f11eb6d7e0b71173. 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/JPZ922102811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0d859a0dd7183aee005091c3bb2d0eae1016a1627644d85befd5490dbf2813. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPZ922102814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6348df1b770062d1f24bac35eb0947a30d478ad704ea013ddfc70a7e4098074c. 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/JPZ922102813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf361be6f23e4f29969931239944013d152e51deae620d867e028119c572ef58b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPZ922102812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cfef86914b10d461df3f1212de4c60a0b47c4ce82a5afbee2f264f8c3755a8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:13:21Z), 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/JPY362100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5010ad8f2fe948fd5be60e87116e7c19cec02716880ff3b9f11eb6d7e0b71173. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:39:19Z), 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/JPZ922102811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d07aa082060aa0a47db7742807098ef17246c8b9b71452233b708038af13f6a. 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/JPY362100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed44f39a378280107b7b6ce029772d918d26a9c6ff3fddf9cd5f9952878d9f8. 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/JPY362100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165e9fce46d13cdd6f6df72607854194c95568bb5a60e4a65d0759d84fd08795. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:28:45Z), 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/JPY362100159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221ddb37d8cd576068d74bc3be61f03414a9bdd1433099a3a4214891ad7eb528. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/JPY362100161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9a5d517ba52b4d8222ea577146a70c3eb561e5c4114ad74d4c7c149f7b23ff. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPY362100162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b176c8515208ad02d5e6e26404b12dbc64d336657a071768d9cd116ec181bf4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPY362100163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d080d918bf20238aa9c9aaa0416b915e8d974d0da588971a0880c691a31c25. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:31:16Z), 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/JPY362100164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668534fd2f810835ad37048ee60e176920c137f5db91d2659b8a9ca83827a4b6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPY362100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ff86b7a320568288a4a233abd60f996896d93b82ddd570d974606698452076. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/JPY362100190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9bdc6ef877cfaf48c238880d9d6b6b0b923376b6fd2159999eac8c7a673902. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:10Z), 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/JPY362100191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2632cf5e790161dceaf36e7c37f3f85d7006a3f58133585177eeda2c704bd0ba. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:06:39Z), 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/JPY362100193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9604ee999c721c9c948ef06410cecb978bad391f2d64a939ab9f4892fcb2ba. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/JPY362100194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4058ba6931259f50053a7f78f1a1129f88bf45a11e6724c340d0bbd3a8d4eed. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPY362100195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099d31094173adf5212c00d0505ce76b54bfe5566ca8fbf1ebdc5cb27ea32162. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:22:18Z), 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/JPY362100192.