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 0xd247fc162966885bc5b58caf4ee61417e279cbff5b783f2eb2d2f9deea72c73e. 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/8c70bc4e-f3b2-4792-b192-6982451d9ecb.json and https://artists.proofprofile.net/proofs/artist/8c70bc4e-f3b2-4792-b192-6982451d9ecb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jujustu Kaisen Lofi (Jujutsu Kaisen Lofi)
Netsujou no Spectrum (Nanatsu no Taizai op) [Seven Deadly Sins Lofi]
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 0x9dfe1700f319d4870ee7e45786e5125b44ae3d97ef25983b05612b63a7e18883. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZFZ42343577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ac41feb4f5a4c4a7770bf84df94b3be9c768e72db3ea1aa640f7ee5b4da0b7. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZFZ42343579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91a0937da9120e798a630523e0eedec842cafc2a08fa95d605912e0dc202155. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZFZ42343582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0f4ed78a2327cd72d3ead5ae6ee5ee4aac819ba79deeb37678c1a14b96a82a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZFZ42343585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b01d1591b70eeaa77a6f3d82fbb9b73359efb4af9b5f467786a380096c072e8. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZFZ42343586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce10ac7f0ef10d581c527f4664cdc6d5ca155e04de163f0460ad58dec0fe0d8. 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/QZFZ42343587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958385b28656242b76b3cdb8f1789ace3921ad4c1c212c3ecfd9ddd2ae0d9198. 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/QZFZ42343590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2a5520e46554833a61655afffd3f8bf724d25a54a6fd9d09d480022f46c501. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZFZ42343593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1390c561c524d17be98920e19249ee88944f1631c23c937b60b6131d3c925e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:46:11Z), 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/QZFZ42343594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb277eb26656bee5d60f98528196b90971e5c0a739baea6a7c7a9e6e9da53356. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZFZ42343595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2d7231716c59f40e61a390cb30faf1e2f1ff0e29fcd857397e62addac5a209. 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/QZFZ42343596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92c5b43c7492d701370b97cc8d3b1eee72a9b50bd2a44e2360b9841d6d9f4a0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZTAW2221527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5a68970bb33fe76b3d400d005189e184194114b17fcf81142e452184200022. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAW2221528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df2dc24e0f669904f92b9c66254900cec3aec5af3b00c93413749a68335b5f6. 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/QZTAW2221529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6cd1e527cab00e021296839ff87b891404b1c4c20f35cc27f43907126dbbb7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE6XW2242851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66d8b3c7a0fea0c71a3d87bccc9246ca4498fdd6719ec770733977528801847. 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/QZTB72220314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b991209ccef1142482790ee920f4bbb9bfecff8d658b22825b7a8b64c186bdd. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/CAQOI2300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05de8ba45b69d7baad65ddc5bb5e1ad1f0b97e4e59e5c5b232e95b19d1b93c3d. 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/CAQOI2300606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ed6ca6cad1ab32da45e2d30e01a690511d0d52a8c58a1f034b3133b1cf0fad. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:47:00Z), 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/CAQOI2300607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791b292bb881435f935cbbb48c76a16710739721ebf8a27738cd88d65141c23a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/CAQOI2301267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80dad7c29646bd65a49f0ba7e9165a5235d6cea83235822a8a2f15cae5732b6. 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/CAQOI2301594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c575ce7d9da0d916a830e0c64171eb6d0f7f0a2740fc44a8717d6c2c33486dc. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/CAQOI2301596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f6ece76e8c9d5b7015f62d8b372298710656e7c773666d4fb15dab2bafe482. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/CAQOI2302217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560db4223985d0b1c0f5ea09da5b392704f1b5b0c1d88b153635cfc9717075c9. 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/CAQOI2302221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe9d67774134026ff1ad3cf5e6bbbe541c392b20dc3c7c2352600087e4e1495. 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/CAQOI2304257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41278a252c4950ae22d946acf465235e62ac47428b90d4111c07e093f615b56b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAQOI2304261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5787a6aede938f23770b8d4a4d88c51eac37dd9a416061901c1c2295f7abc2df. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/NL3NM2300630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088f0a49b5949ae168784762e8a1980c8454387343124a0289589c3bf21dccc7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NL3NM2300629.