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 0xb43e3e50f821f6ff3ba2bd85a7426d927ab42eae649cc64c38b93df8217e48b9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2e1b963-4b56-4641-956c-6dfd84234e4a.json and https://artists.proofprofile.net/proofs/artist/b2e1b963-4b56-4641-956c-6dfd84234e4a.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 0x467578a80144e4e39a9c8596ee097e99a6f6a66bb8e779aed40ad95865f2e1ef. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IEAAR9000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf02c447734122a9a1cac99505a864b76644a47ef5ed413fd915f30ef2f8ac90. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IEAAR9000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fff6723eb0ca9de8358d52a76f4d7131256d8a17f2371e4d242cfe751a31944. 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/IEAAR9000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f029410599bbd4b6233f5adfccdc8d96860f6d915d8e833a4e0d97a50842b3. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/US7SF1355426.
The Sally Gardens, Miss McLeod's Reel, The Foxhunter's, the Bucks of Oranmore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232b1ea1f765a3d5cba08bdb79f38e447eef3de798439551eb0f018e4a35d5f8. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USA560554529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240e5122cabb62eb644382f7e51b7e4f3344cb8e0054286fc3c4e4a17d9360bf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USA560554532.
The Battering Ram, The Geese In The Bog, The Pipe On the Hob
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69012c62b3f17bfe694a50fb58b3187babd4c44ccfc2363fc1987c9c4c71aec8. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:47:13Z), 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/USA560554535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa152ca49f9844e29c9487213137628f3b3f6d106f2d11f687d00e519794ba7ee. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USA560554543.
G.F. Handel "A Baroque Messiah" Highlights
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b4ec752a4e274850c00b7517697488259ac8513e0122be85efe654b882b568. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IEAAR9000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcc75f7d3bc51fed9fd81c8de7a46a7791717779bfb0a970e7fb3beafb53a21. 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/USAKS0500935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafda16a9bf28aedade761f84c057de578d6ba04e28a24d0742e8d0f43f8469ee. 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/USA560550204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b4ec752a4e274850c00b7517697488259ac8513e0122be85efe654b882b568. 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/IEAAR9000082.
This Love Will Carry (Frances Black & Friends)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf02c447734122a9a1cac99505a864b76644a47ef5ed413fd915f30ef2f8ac90. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/IEAAR9000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e31223733d155fd1a301bea181d2de31f3b5878a5b6364f9b131ccd06f880e0. 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/IEAAR9000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b4ec752a4e274850c00b7517697488259ac8513e0122be85efe654b882b568. 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/IEAAR9000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdf969d72b12bbf3ab2ce60368f36286399421e9635fe954414a6bd43f32e3e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/IEAAR9900170.
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 0x72363db7eb42e81b94d187da87fcb82c0c599fccf4cc3f997555759295fd581e. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USAKS0500946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fd0a54eca855a71a194808edece4839287d99dd2133da64a36059c4f5617a9. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USA560546959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1493b2a64ed5a122ab2fbf1fa34eb6f3c8efd50ccc6ee7fbeed17101aed92815. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/IEAAR9000070.
Essential Celtic Woman (The Irish Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9babcb16aa8dbf98e66700af4f465859462609a1ea8ed4afc8f00fa099aa9ebb. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/IEAAR9500026.