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 0xcce0841143f54731ea4f1309c0d54729733874627fb1e6ee55b1e5c677f1a138. 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/41bb3ba0-3aa5-4328-8503-aba2a852625b.json and https://artists.proofprofile.net/proofs/artist/41bb3ba0-3aa5-4328-8503-aba2a852625b.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 0x6db60a45a9a3186d52f0d2b303a9c54fe0927c96c4d5b083252af7fd534347df. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BGA471916673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c4482883e11b836b6aec9bbca00674fad04c4f1b31fbfb335082d8cd7f314c. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/BGA471916676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579c15d5ee3197add0dff19d797cdd27da6c2c96dd5d099e8cb68c435bc070d9. 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/BGA471923623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa806b3561812090101a10714210695a38bf482260ae204282ef64a9b5ef2ca5e. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/BGA471923624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7651fa46f8e2c9efc98972c6f6643a2511b178e423189a837444a3f6f0513647. 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/BGA471923625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646c2bd2e620fb1976c51862fe0f4396cf4f09ed30267bb5354de9e66a9a6678. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BGA471923626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b21c10525890e93d45548e5edcf783b25405e0ce0fa44b69ada66e052c2c0ba. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/BGA471923627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee5241be04c2a0f962e769ea6f813ad8516c7eded57f702ebcfa108b0abec8a. 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/BGA471923628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969325605caf6104c475533a985e7b9a4e931b00c3595379fa78d9cc9018ce5e. 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/BGA471923629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a7cb44f05a47398198617ae7fe139cf932a49c1c32072fba94f492ad6e945c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BGA471923630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52329751ae0655afaf17f993f6956f1a040dd21a64320b076eaa3d6992ce2b3. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BGA471923631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32240a56d75596a86c7aca4501a83b909ffa3d4372911a64c61f581cfb95203a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/BGA471923632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a402cfe00eed9af1f2edb9c6005adf4438e4d88e94e535eda17bac0089c9a8b. 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/BGA472017791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d54083bb065f1009ac70558ddc704c7c9d48cb4a48c54e671f1118179a5f30. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/BGA472017796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780305728d5611d1db3e442afd05e00cab9d4782a659c689254033b27c6c6166. 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/BGA472017797.
tȟokáheyA (Clear the Way, in a Holy Way)
Mitákuye Oyásʼiŋ (w/o Native American FLute)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edaa2cf63d2569e7521bd1b7568604a2c479969f14f096955b3afa2377f2a37. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZES62536971.
Ode to Joy (Fourth Movement from Symphony No. 9 in D Minor, Op. 125)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbe4b98dac43a4ad13ba4bff8350a7a64c2a116da3348ca1e5b8730bd0a4fb5. 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/BGA472135098.
Für Elise (Bagatelle No. 25 in a Minor, WoO 59)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc1a47591eebf1c6724029234946bc887fa1fc917c5dae88e363bd9f4c17aae. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/BGA472135105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadc361e818c226137aa1985d538ba2618c274ca9458fbeb003770fec0629402. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/BGA472020697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03df29c539095bd54a050ae938afb2b3b1521397fa3811edc5a72b772a61144. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BGA472020706.