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 0xbf0badec4d0adf9c78895a0fada615974f1b00031ef257a8e4546e5e5a8461a1. 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/83c438f0-290d-4007-9c38-aac3f635681d.json and https://artists.proofprofile.net/proofs/artist/83c438f0-290d-4007-9c38-aac3f635681d.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 0x3165c4cac3a01adf8c97c8e7bb1440725d36d099401a8dfe191fa6fce8d10b02. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR2X42055232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0039cf0bc3a277e8047206d47f32596429298fd933414bb887882bc89488141. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN51961948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1802181710f3d43536e92110a84b9ffa380f38788d4701febac0cddf871ba0. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:45Z), 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/FR10S2043653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008eea3e92b5e719db6c529f4a4059518d0eb8894de853302b55be1e717019b3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR10S2043656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492cf703d2eda9aeedf8507bb384fe739fb6047003759760d77bd7adb81d1016. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:01:46Z), 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/FR10S2043657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fdd177edde83a41775e42bdb9aa1bc529d90b8d1c48ed73c19e87fb4b893a9. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR2X42091654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8ad54a87d24a88fd4c96b5ebe929667c26d25b6b488e320dc25c2f9a0360a6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX202084267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf89ac763c8f1e545da383e08e85fe5803c6f1f82330fe64966446b7f43196d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA052046952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa142e8506f6fc0bb43bb545d21d69258a3e0cd8ce4f90ed6c93ad3bb8702bb3a. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/FR2X42154116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550b4ba3d12a45ebffe49d6419ab826bc8fec962e351c0dc2bcfbe5007a7717b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX762157365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4a47d246b010970f6c31a8b97d614b14e6a4717cb438c8d7ee77203e0a593d. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:23:38Z), 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/FRX762157368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c84d236352a45468c22d90afeb88e5a0813b75d6610805f30c5bbde69c12ad3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX762157369.
Uljhe Hue (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb35f9dfd84304c8f6778b0ecad324e55a95088ea015a5712b02cc5c4e9cc63. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/FR2X42209033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee76e4c1d11e9d80cc3ffd81f4c5078688596377f1b5e1f9d11dc0b04991dfaf. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX452260947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbff4d389447f112824f91df0cc36caa7db74b62658b024e5814a3a3298afc7a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/INUM72300147.
Permanent Roommates: Season 3 (Music from the Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda49347325e1d8278b928b6970a3afff3e0e7cd7f5b47d691581f457922adfe. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/INC442300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b76668d6baa51a7bd7ff9606ba21d169fc623ee8ebfc51b89dd0973988fb4c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR10S2457440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa212aed302b6f2114fab81d8755e540448ecc8a11d778d026480b42a247ebd11. 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/FR2X42415498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed819b4eba81a3d77d23ad395de22ae5b183a9d26a3422d279aa5c6361f41217. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DGA0H2407341.
Article 370 (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28607519ef04cf3dd8b009eedc08b1dc494696dd3fc7d938b8bab210d0de6131. 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/INH102403250.
Tejas (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c78c241bfee0616c1336afd9e8ce97a61d52f01c2a8244b78a88451fea1e293. 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/INZ031413753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668ec39ce81d85485faa3474b02d542b93fa0e2bd29323b3b1500695be8a56be. 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/INS182403128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd309e0e62fb94e2204143f5932e33d48f70b9a06b9d6395851187ee7d72d61f0. 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/INS182500945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73628821a2852235f2b3963af79d1ed91791df10423a2293928f7100799586af. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/INU252412217.
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