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 0x25eb82a21f912298b988cd489d48956aa4f3042e86280fbb5fa02c3781662b80. 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/29570b3b-1748-47d7-92d0-7c9bd2a9fa38.json and https://artists.proofprofile.net/proofs/artist/29570b3b-1748-47d7-92d0-7c9bd2a9fa38.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 0x62fec7d2dbb1f88392082167893b74f34f3c4724491d49292091d83472a4e946. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:27:04Z), 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/ITG272100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eef1efc6f456fd2443c699f30ec2e7916b49dd5653c7b8a62935ad11009c8dd. 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/ITG272100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33a867fe399e5225ae12f95e8f74ff67544e73e5e63b55a4fa71ec0cb6cb1d7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ITG272100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe23b0e2e1f996231c95c8c05ed18e72804c5ff0a9529c9ed354cbda098aa85. 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/ITG272100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5bcb36e24c643eb2d734337571a93edbda880965420c43b5c43d1465804e76. 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/ITG272100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cc67230882fb317a9134953aa02b18b1e42d511cb219096ecaa6400f539e11. 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/ITG272100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21010938c14f9cac5644ed3571505fb4dc5a5918c148a4773ef6fcabca78d9e3. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:02Z), 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/ITG272100010.
(The Things We Do) When We're Young in Love
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1491c75be908ccf187dc2f3ad124bee83a1f45ecb76ca9705e0a55ebb293a3. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ITG272200868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c4640210d9e919e603f0021d13da00e8cefb0a8e84fe762471b35798dd4c66. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/ITG272200869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c3ff8e95580a78a9dc2df045f8ccc4b153fb46fee79b918599bf05f1c8f047. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:04:52Z), 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/ITG272200870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe408630a7384d036c1b7bc47a2fe521a2a326fca24364f73f9bf9b468247d89d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ITG272200871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f32f3219458b1dbfbd11b5b132987a31d6f91363362b41d8dc69f09dad3a840. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/ITG272200872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fd12db27cbf61453879f9d8367c95c599488eabcf447fbc034575f8022ce81. 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/ITG272200874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b4de5577d39e70ae9b8d669f87256dc435187efb959bc26ca0d2a71fea3eb5. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ITG272200876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d35a7ff00c59a88ba85e8c0181123b4df75f7c8daacfeab270de5438a41187. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/ITG272300559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1b0b9e7a06521b5d8b87012119be84940fd1e0105ee633f08ac34e828e4fcd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:46Z), 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/ITG272400828.