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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa1de2278bb2d052753716e4011f6c0ed6e82f09a8423f110d5826d3cbc0c0c. 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/e02e58a6-d99e-496a-9f25-4beb28b096b5.json and https://artists.proofprofile.net/proofs/artist/e02e58a6-d99e-496a-9f25-4beb28b096b5.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7916eefbc346a5169057b692ce1ab99414862294b4b83894e06731f561152755. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TCAED1993867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fc4a9407b3031ae63a481ad5d9f3ceb1e7fa997f9ce8e41f111baff5f88f60. 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/ITK192200130.
Ave Baby: Steppin' Like a Steppa (Chapter II)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa303fe8fc75e8e691ba7bbc09ab25007e247156dd0e26e5f90acff43bb494f18. 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/ITK192200280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6e52f58a647f02239c7f12238911cc5fcba08957748467982d169274c73a5e. 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/ITK192200281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab308a50fe237199cdfde43415058585783f82ffe8583a1b72cfcd3717c880e. 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/ITK192200282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7fc94f90c4ef8a30fbe5e995fddeea27f870a1751e8b3915fe2bd5ffbc88cf. 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/ITK192200273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef70dbfcda47b80d06596fa9278161dba35c76212448ba9b25df90f561453cea. 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/ITK192200283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d334b4ad24164d1516be706c0cad680c4813d6bdc9d25fcf91d0469d4e90655. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITM382300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2be371a567bc73c6f75d436acdb11683c901ab4f9b05089d58270548fd19d2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ITK192300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf01101beed2bf29431e7927372c217cdc16a41b366d71fc73fb19c9a11649d1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ITK192300241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874ec95f4b623a1252a9d9b11ab3257a0d75a94d58e7f4833b2feeb1cd410b0c. 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/ITK192300242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed4ac7de37acf352cd596453f3046c8b34ae797b3d621a63912a13c85492261. 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/ITK192300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f3b658a0575d6a8bfcb0023ad5e5ff74489c6c2664227bd4d8dec5a4fe0985. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ITK192500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50778b0d0986b2903ec0a733d1799179f66a01778eff32196857b1f1664c872b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ITK192500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050a5be5e428591659744ada6ddd84593695050308a55533b13359c8c187a69e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ITK192500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e30b93d1265ec131d317fa9b8115a2224ade1c1479f4eb9d1b0cc328da7bbc6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITK192500212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08ca85fc282a2d9c68aba63cd996a25120078031bb04354bbecb72ea823fe86. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ITK192500245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18dddcb20f71787f432ee5665b4528e371dd3b96f08cadd4ce099a359642b46. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ITK192500246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b91a05980d9d529d671ed6173467d84e4d6d5e57261745344fd976f0a2cadf. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/ITK192500250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aaccaf73c11e85ee1106dc2ec1ece24b33a3a82be51cf36ed1cc8665c15505. 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/QZK6F2214765.