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 0x3185755f8c9b2f82978c9a190625994b52ec281271827fce5c0a13129654ae95. 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/2bb53b11-72a6-4542-abad-a3cefeb1fa60.json and https://artists.proofprofile.net/proofs/artist/2bb53b11-72a6-4542-abad-a3cefeb1fa60.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 0xc330218ccf8441b48d4e1ef2f0318cbd48d220e57b788e48d1797675a6c22630. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:10:16Z), 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/QZWFN2322371.
Vem kan Segla förutan Vind (Viking Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fd1890e9baff1448d8fbfeaeeb7a9bfd63ef35a8e53b9a8528c2162cf50c9c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZMEN2488433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603c266c9c3ab2d869bdfe7b921dae4b6355040d60cd05b6b2c62d1e9423300c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN42492033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73dbc485a94047347283059c5a46d8e5bf39e33d42a6a5a3f3a229c3072487f. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZFZ22461193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa450082f38dcc86ca9e523e76e143f0e97ba797d397383e733d9cf08f432e0ee. 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/QZHN42492011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63fdbd3b271e6f53023fcf6b947f29d4dc1e58c99afb67628035495521ba1696. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/QZK6N2407564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef8c64936f130ed251bfda20fd8ae2553562de0853d8e3a351a2611713a4e5b. 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/QZMER2406354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc96b142df769af0bb70d009e499b77002924159f426ccd8fcef895c32f22c63. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:27:58Z), 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/QZTB22413775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5080519e41917f3b4c1428b9f5f7e2e3512aedcc8530415fe28cc01add0994. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:22:01Z), 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/QZDA52491532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6b1ddd829ea0112d5b36525eeecac088583b390e3adadb5128faf40c841f6f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZES52432017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fbc339b7d78615b80ab5cf81c319097fe64b401a8dde5a26521f07a38dc23b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:16:45Z), 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/QZFZ72454143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca903a5b039f3bfd23762162f8b9439d88290291f9d2c7f70bd441b6f4cb2601. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZFZ72454142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc330218ccf8441b48d4e1ef2f0318cbd48d220e57b788e48d1797675a6c22630. 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/QZWFN2322371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5cf1f670b963de0304db36980858747e07bef3c97f69f3e424c252c8d7c5f5. 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/QZRP42488985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dca4724b59c1836281fa028a062e32c875fa7f140db19bfc728734a28ba588a. 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/QZNWR2467585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f30cb8e19d0ceead52167e20f5365e14f290c98a2af36d18cabb646c1fea9c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNWW2458597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29715fbee2c22d1e03d7f1c89c4a0c00372bcbe415351639cb5c9eba0bad4838. 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/QZDA42532146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190b16fdf552063b1d7439d9402ee1e1a8cf454e3a04f85ff851e07d96fdc9fb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNWX2498818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc507c51ba63f8d1cc61cfa7d7e6be1ecf5def2345258b203274aebf5de1fa913. 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/QZFZ72537461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0dc5a7149186b3a9f9cf0a6de905572658f97331d237326d393572c35dc3d8. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTB22413764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2134a957b41e3fd0436fad41d412d3b9c832b83e89717bb9e97a62dd6f7d958f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTB22413773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d874a5f76ecf7ef2abfb8e661d3be0a2cbc21d96140c195ca072de346b628ef. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:38:59Z), 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/QZFZ72537475.