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 0x444a00f758894d9e7176df60a1a0b2fb9b3c049022af8050034ea02eac015c47. 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/d062c21e-f2ad-4422-a87c-5cd7c88754bb.json and https://artists.proofprofile.net/proofs/artist/d062c21e-f2ad-4422-a87c-5cd7c88754bb.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 0x38c9ebbf5e0314b160fff0eba8035ad426c45d940287bae9b25cf00f3d0cba16. 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/BCZ582400403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa318656f805ef51dec2e582194e39083fe37b96f9d985707628163526fe1d969. 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/BCLWS2500418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5183b012c865c38bacde2350e5a22f22fb7175eb0106a7c925458f8a7787f9b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BX4IU2500969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967e55fbe53a169a942a5f3f2223efb18b3fbd3467151827e6c32a105b04c857. 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/BCLWS2500428.
Ela Brota na Favela na Intenção do Roça Roça
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42721563767eeb7d4cf311f01abb5ad5d3a88430cf4da6c2c9036990e5aa20b1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GXD7V2513636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acca628ade73dd1877335163f6dd5aeab255c940615fdaa337ea5bcab201f2b. 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/BX4IU2502290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b8ad57732b64e521ecebf7ca86435b2f56658b7f5fc92619259bec9e610624. 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/QZGLM2506276.
Só Porque To Hypado - Dentro Do Elevador
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe250d35a3f45a2e7c708e610c361fd4aebabfb6b5f5417371504c2a608cf43f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BCLWS2404495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230defc876101529353f4d03fe917eac5901379cf8c13d1b0183722a22871d33. 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/GXF9Q2464483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bc91960e3144ca421de6d198344a724765e8a91ae932c1e9f92ea0c5bc832b. 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/BCLWS2404346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa023ce22a934b64f776e92e4cac04848b47bf0a8a86dc9536ed02bbb57af70bb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZW9L2446038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d7a64a3c6ef4cd59c9aa52625e744c6519560fd92d07404b3947b37ff2ff20. 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/ESA112451358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425ef7470f84f771fdd5d6610141b7b85c9fb7648bd5c518eb7307f324cb8d3d. 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/QZNJX2418819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3fbe65bd10cb902707c23aa153e2dace7647d1957d9bd1a9304f7b89af2de3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BK2NP2400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa7903a41587070a58c5a1da9fbaab5767eeecf041a6fd39bd7f26d1aa5c612. 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/QZNJX2478006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a2bfd57a22733695b812577f15857aa1977e799fc685952d608ca7d10d14cd. 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/BC3PG2401617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4349b6f61daed7bf3bbd03f1f1043eb5ffdb7c96d61e62d1577acc59294bc488. 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/US7VG2339770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec54e6847d6050904d83d368bc3b3623d98161665c7a33443f3920ecb9048b05. 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/QZNJZ2439336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd936e6b113f6806d6d6807a1d903e8601e4a7aefc7f648325a63903de0be4c2a. 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/ESA112440976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3f21d3af0133d605b1cf5ebf3845a3b618c842b6d39c32843b3378d6793efa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ESA112440978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd419613536046d467929601dbf0c60880d3747632b6b4d0ff334f9b188d71267. 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/QZTPX2423915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2810be8d8cf37d33524dfe0fd4cfc907d0d05a7bbd53dd2330a4bbd0f1abf82. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZNJW2466171.
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 0x026537280bf04b0b76a5fc3212bc6fe8a19afcad27a7f5586280a73b3b10d69a. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZMZ92479573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c0f0dffc45a0ef8b613606dff2e6558f0e48d4d1ab1b61abaeda5971475dfd. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/BXKG22401078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16605661f6e6785307981963b71cb902793313843a6dfd25e181f465e5c024b1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZNJZ2449740.