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 0x05e252389a8c5410cfc35f919f2cf0778f337b643b3724119793a46dedb7d732. 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/d351796c-bc15-43e0-80d2-e93d8386fc70.json and https://artists.proofprofile.net/proofs/artist/d351796c-bc15-43e0-80d2-e93d8386fc70.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 0xbd89575886255f7b0d7a11a01a223f84b4ca77b2a3fd85aabeee64c60342cd55. 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/BRSME0300266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b43decf442b792649ce6411c6b91297f08720a177833d68adcabf9d5094ba8. 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/BRSME0300228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf746740024808aea9d49cae6ce41d363633c9d40a9c03290f4ecf80b5d236b29. 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/BRSME0300267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a31c52c7fd8df77f7c9a014d4142ca0b1bd409c2f2c1d54d1b41101326a78e2. 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/BRSME0300268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe08e04e2837f1fa9e2c344f5fc5dff15da6e12964434f1897434f91a18ddc08. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRSME0300269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1179ae69e077e66ea42cecdb1f152edf85178c01aa7d7d0929a6149d43ea94. 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/BRSME0300270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb125342cdd0347d9efc5fe52c5edb277a482e59d2296dc73089f1510402c13a9. 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/BRSME0300271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02880ab1424ff55fdb02723f89003b211cc181c32ea02bebf0db06ea3f826784. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRSME0300272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4413d4969c8be417a43e1e57bb3153232dc23512f3d1932fbfd61f48775fac. 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/BRSME0300273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb47e33f6018d74c45a85aca5b0cd89ac2e5530e93be825862ac5ff7e3636a78. 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/BRSME0300274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111bbadc51b37af2be59eb67e7a02c5246ab4884ad86b77bd2de18d6157d08ff. 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/BRSME0300275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf941fb8094baf535387eaaf165ad9d7903e905cd853624be8f6464cd4f292953. 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/BRSME0300276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5048b626403903b31cc55b3a5c53e141ad32811d32b8797a6c6e83c00c8ef4f. 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/BRSME0300277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09744bebe0bb2b27995259ee63949fb0cfcd6614d05d90e3c6df10d060eb03b. 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/BRSME0300278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c9ba9f9a5dfab018f53507ad14b3be8974040513e29a92a0c97f3dd4c1a89f. 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/GBPJJ0910001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bd4dbc552cc0297f774a91b65fbfd3d83214ca641da8ed1823be51d0ee0e70. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBPJJ0910002.
Les métamorphoses de Mister Chat, vol. 1 – Dionysos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9425d6e854fb14e6a966d4608529892a9c958939eb69c3aa725bb9c83837b6fb. 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/FRZ010600080.