1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf54afcbf1c9a75f0975fb7dd7750b6a8e6368aa1f2d6fef4eb8208b1903df5c3. 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/a27ea727-3bd3-4928-9bd0-a9bdaa403467.json and https://artists.proofprofile.net/proofs/artist/a27ea727-3bd3-4928-9bd0-a9bdaa403467.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 → block OTSBitcoinBlock must exist at that height 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 0x88943746133e9b49e576caaea53bba646a11c0868a11648968aa35699829072f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC1801342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa502ce48b6426ce1cefd770cdd77951d17443db982b51abb0a24c67b369edf6a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAYC1801341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c721af43a267561ab4fb78c9e64bd8e64562c735a91b614a337539063f37e83. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAYC1801338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d325f8a13c13621ed00fb921e89fff6f1ad97886f23eedc4594f2c4ecc15f3a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAYC1801334.
French Touch: Dangerous / Sunset Lover / Da Funk / Castle in the Snow (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53ac087e1b2e5a5138204444af78b54597288a7daaf15c513e454b0798c450b. 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/GBAYC1801331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f72c9992e9806c273bb8a6bf46b240a471b9e417667fc454e4ba68716bf7986. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAYC1801337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8352a23d991b1300975f2cab831d22a404e959f756198030dde0565b8aef6af. 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/GBAYC1801345.
Chanson d'Hélène (from Les choses de la vie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bc53a6f560fce0d8fe3cf107b15b43effa8efbda58ba140691f6a8084923ef. 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/GBAYC1801335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa96f0477e373d7c6fd2c446348de1c8c6140a36beed729c34b6f8e1373fa9b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAYC1801347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876903ce8cc7113d31c60332fe5d0de717567d6a16c84a7078082f95bf0302dc. 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/GBAYC1801333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56787316c18e1bb8c30481c31adbbc8894d308331baaa51da2645ad6c348c630. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBAYC1801332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6bf84a0691e1e000ce7b2e59e4f8355910332547fa1489b48c1019b4018e99. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAYC1801340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88943746133e9b49e576caaea53bba646a11c0868a11648968aa35699829072f. 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/GBAYC1801342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c721af43a267561ab4fb78c9e64bd8e64562c735a91b614a337539063f37e83. 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/GBAYC1801338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53ac087e1b2e5a5138204444af78b54597288a7daaf15c513e454b0798c450b. 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/GBAYC1801331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa502ce48b6426ce1cefd770cdd77951d17443db982b51abb0a24c67b369edf6a. 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/GBAYC1801341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa96f0477e373d7c6fd2c446348de1c8c6140a36beed729c34b6f8e1373fa9b. 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/GBAYC1801347.