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 0x7685167605ecf1bd45388606680d5a419742ea14ee1d0b23fc7d30b3892461e8. 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/a134c956-25ee-40f9-8f4e-1d55e9fc9e71.json and https://artists.proofprofile.net/proofs/artist/a134c956-25ee-40f9-8f4e-1d55e9fc9e71.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 0x2ab1f8faeb6285633e8c31db57ccc031d7c8e4887bd004b268a419eee214581b. 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/CA0RZ1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cb3d96f44bfc44f37050ef9726a3edec61b9dfa9473dd543b5d9a0b63ff869. 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/CA0RZ1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60d9e3504abe8c23e4038bb317971ec2395e80f50b9f832dd5d15065d6a7843. 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/CA0RZ2200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04deff5e74d1825cfa850b9698bf3593fa1f79c24b1f145cdf00b1f0f6ef688. 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/CA0RZ2200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd95a80ca7b02e52711174ca8c7fe538e4b46ec5536e16720aa882aadca81e15. 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/CA0RZ2200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74edf4659dffaf7faf10ba8d860c048e3b2912c632f0fc877e31f7ec3ec1327. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:08:13Z), 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/CA0RZ2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633e63811515732e0699f973897a56f4b9d9cda1a305385b178931d359eb123b. 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/CA0RZ2200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233069410c10c0c480c4e426ce733838e41ec12aa7d8058e169bdf658f4eb838. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/CA0RZ2300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233069410c10c0c480c4e426ce733838e41ec12aa7d8058e169bdf658f4eb838. 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/CA0RZ2300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0841d46aff27eb61d4033dd3a696ac7556910f4acddf3aadc24ee543cb43b2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CA0RZ2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74edf4659dffaf7faf10ba8d860c048e3b2912c632f0fc877e31f7ec3ec1327. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/CA0RZ2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69081f6bba0c0d4d45bf37f572f231a729bd6cb64a2b7d0517e60dd8d1720c3c. 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/CA0RZ2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301a947eb29f1f3278a498f2fee68cd5ed7c4ecba64f9797a3023b64d6129ba7. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:31:15Z), 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/CA0RZ2200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84022522ca8bafb6678569b2752cfe126420ce1730b6d449147f2e5ea3ffe1b. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:02:27Z), 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/CA0RZ2200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e21e4639142f24ada5b01eba76e3eec90ec20f1c76a53e0310e653fc8282d1. 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/CA0RZ2200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814f7f0822355e7cf299096982c8d3baa3816338b61cda66b2f63da52a39095c. 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/CA0RZ2200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60d9e3504abe8c23e4038bb317971ec2395e80f50b9f832dd5d15065d6a7843. 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/CA0RZ2200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd499307032ed6fd3d2f29576b9952ec00e6f74b15c0fbfd59d59a5d22027d933. 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/CA0RZ2200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633e63811515732e0699f973897a56f4b9d9cda1a305385b178931d359eb123b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA0RZ2200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d8cc99203c184a4656fcd8a36c4c67e37eb72c982db53ac1a471bb0e81aa0d. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/CA0RZ2200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd95a80ca7b02e52711174ca8c7fe538e4b46ec5536e16720aa882aadca81e15. 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/CA0RZ2200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d05c1b3c08973bffec930918da0557b29dc2f729579fbf05cf7d81b36d61ffc. 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/CA0RZ2200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddc2e8b935a4d755790bd0151060d4eb77ef788d4f61be32e25a0d4d0c43660. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR8Y72300291.
"In The Air" She Plays for a Relaxing Women's Day
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814f7f0822355e7cf299096982c8d3baa3816338b61cda66b2f63da52a39095c. 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/CA0RZ2200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60d9e3504abe8c23e4038bb317971ec2395e80f50b9f832dd5d15065d6a7843. 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/CA0RZ2200107.