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 0x907ccec538395b15c2a28c5dbc4a51e2a9f3e21623b49a7a308cd6253c737856. 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/e2e37b61-5df2-4198-9af1-fdc86eae6d71.json and https://artists.proofprofile.net/proofs/artist/e2e37b61-5df2-4198-9af1-fdc86eae6d71.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 0x667e1bad2c90240b3c958b1f3c18c26b6b52fd460f96dc8988b064df6d11f78a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/BGA471700827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9986780e8db908bcd811d69715a3245a6b4861f975b9711628df0f6f2fb88d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BGA471700721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d478095a92df7ac6a14666f50f753f4e7452bb76880ac39ce096b9408ded5ef. 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/BGA471700722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb767c2410cd049a44ff13b75e964f7cb99d51e182c8235989fe5c71e65b210cb. 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/BGA471700725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003afb5c68b3a7623e76430b950e2ba640398318d102f72a808e2183631f3ab7. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/BGA471700729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2412625dd2d179f63c4115fb60b6693c9b77554c2f7538c9bf254faa18ce9d6e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BGA471700731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2621077e05ac14de66e493b2d7645d95c8f7b79234c6beeca8c427dce23acfd. 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/BGA471700737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40d037a7bff32dd486652a213ad393907aafb083e2b9eee998f88e01dfaf054. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/BGA471700738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17609544f1f8ae1f02095ed82da32e3a8e86919a19bcf1a15539cdbfc439af7. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/BGA471700740.
Music for Remote Work (Bossa Nova Guitar)
Music for Quarantine (Bossa Nova Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03eea98e558a056adf4ab01d597cfaed5a48ce628dadea0a09df34abeac33ae. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/GBMA22496580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbded08a62774b4cd4806d295f49ae23508c0b9bdb3faa81342626cbc8d255cab. 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/UKXN22444130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e09233bf46bac300320847ec5977e81c1625abb07ee1bf5f0330cf75236dea. 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/DGA082388794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f09441f7f8304aa521bf64f606da96732418f8609d25d98c871799e4fbf217. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/DGA082388795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eac07d2d9b9d30a956fa62165958c07b88ea945c26ceaa24e910f08a4b95b6e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DGA082388796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd541f4d4b48ca5057e16da7d41aabb84fc144533506c637b0830d55ef05e847. 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/DGA082388797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d464914b82ec7a6e0a10ddb55dd3fe7f9239eeec3c2704eba09b2847eec4be. 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/DGA082388798.