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 0xbc3676726ac097064b22b39546924b24b49e429ccc6e56503521a4c0d760ce61. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6ecf4d9-08d9-451c-8f0f-5a38bec15ed3.json and https://artists.proofprofile.net/proofs/artist/f6ecf4d9-08d9-451c-8f0f-5a38bec15ed3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ANN MARGRET - GOLDEN HITS (앤 마그릿 골든 힛 모음)
Tommy (Original 1975 Motion Picture Soundtrack / 2000 Remaster)
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 0x12df877c9a6154c6051cc4851b896803e3c05afb278bffdaf07f2f14d4495be1. 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/GBAKW7501024.
1951 / What About The Boy? - 2000 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0216489ae4a46a29a3a50b478a1b6b4a8b91676b9782dcd73c39b87df20c58ac. 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/GBAKW7501025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12862cfb73733ef4c5b0f0e9b9bdfe8ac480c458013322ebd4fc6f7d8a595505. 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/GBAKW7501027.
Do You Think It's Alright? (1) - 2000 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d654a2dd751ce5eee3292ce3e7e7f4622b93123916dd9cb630312b2b09c38e. 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/GBAKW7501030.
Do You Think It's Alright? (2) - 2000 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5970d1f5a0bbb59092af0354fba383d19b5e90503c5d3d8157e60211f62eb37c. 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/GBAKW7501032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f934aeafcfc713b59ac4c89f86d7d376cd9932fe3d30add67cf04c4abff68e. 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/GBAKW7501038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1fd4a274b277e210ccdf8f2d29f18bf435b81a5d71e9432b8bd96d27ebe465. 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/GBAKW7501040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf389169a245231b77a64fa46c9f46ffd6df758a65b9728ecd76adad5c0ab41e7. 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/GBAKW7501041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1942770e27bc005a31eadc3d4d55b1b97738753dd29ea0a2a33a464472dffa7c. 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/GBKAW7501042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5560b199775b572ad1a71aba6bfd73e55369f6cc828caf494787886bca6015a4. 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/GBAKW7501044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6986ab01dea98894b7c83f068a09248440a8b0e1bf7f0d08e67a06fb85cb34. 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/GBAKW7501048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a69c06ec733e8e2dcad401b91224b96c935cc775e7fdd88504e9bcbcc47b55c. 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/GBAKW7501049.
Bye Bye Birdie (Original Soundtrack Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff06e224e426463516e982993e66b5edb12378afac0180394597a0647ca90190. 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/GBLGL1018752.
How Lovely To Be A Women (from "Bye Bye Birdie")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ed4ba2efa3a21d76dc72c635b9ef02a55b70cb4bf629cf06ee9feaf61c5218. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBLGL1018753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fb082eacacd193dd1323a8b78673c983aeb591252c93a54eaeed477e049c9c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBLGL1018759.
A Lot of Livin' To Do (from "Bye Bye Birdie")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e9e2f0ca0943ef31a0f3f26526eb402532a8840d067e5d82fefe06f94b5194. 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/GBLGL1018761.
Rosie And Bye Bye Birdie (from "Bye Bye Birdie")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6082a5eea3a0d1b7271c1201558666d962fd9c855e779aaf0db46b703264e0. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBLGL1018762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e941d26a8896212464b63a6b3908ed7e0d6632de7a8205ec9600df3d4c1f02. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBHGA1527253.