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 0x835996087729b8becdc15804f98cd1a7b889e5310b5a6735324704d11f7150ea. 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/f9cbd902-cd72-44cc-a32c-b2ca598b564f.json and https://artists.proofprofile.net/proofs/artist/f9cbd902-cd72-44cc-a32c-b2ca598b564f.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 0x5030121eb9059bb24a8672a444846a5c4af22efdffff1623c4fcd90101506153. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:48Z), 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/INJ221903079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266cf55b07724e3a6427ab89f403c4008f531e4d97a32d3d57e97761cfe1b270. 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/DGA082204756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb9abb3d5d28368d1bb3b111f5301dff33f89fe4b4175bd920c493e84a44ffa. 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/QM6N22326279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30a9f0f9ea1c93c8d0a82c3c209f57a4672a13e3b163f9ed89d770972c74254. 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/FRX872360743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c23f5ca8d2e4b00d6a80129d49cec7459c9527b5fe3e1dc2e48ffc3763b824. 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/QZPLS2310007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0924064ff660f65dca690b91c93f76050cf5111530b297b7c1df20e32f43fe4e. 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/QZPLS2310008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1d49e422823cb92f4c66cdce86bb026fd01b64a5e6d28bcd5ffa33a9e58b3c. 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/QZPLS2310009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb609409eed02c5884f6952b08e04584fbda78f17799ae3618556bb6916f579ec. 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/QZPLS2310010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0130dd7df3657de3e4a3ef27fa79ec2be1390a23d5e83fd7934a011782db1f20. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZPLS2310011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9672be56511248876c36cc32de0aa32d82009327eb4ad58f70ea793ce98fd0. 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/QZPLS2310012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9321a20049713363a9743d5905eec1645b62f4ec32dbfb68238f882ef1970f62. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/INS182301929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffadfa86dd3bc109a5b6bc7f3c003a804e7d7d3ada22aa5809ee5ac66901e9c. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/ING502300238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b1467b9e0397935c4698943781914c53f778f281290cf81b03a04cc8f56d67. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INJ221907086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0573001a3a66d109c3bdc5dbba7da68dd23d235a933a144034de2177756c970. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA0P2315305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2311cf46efbc1773c6198026ddd871812c1d94116fb3616a5a894b2440237980. 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/QMFMG2303006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56c4d8608e82645d63c766944a8431cc944c2f93a280fa23ab3d3415ce1c554. 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/TCAHQ2397072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d27cb3b2faa24ff455a82b5f688c7d9a639e3bf3e0e4a5375bb6e1c0a85686b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US38Y2401263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9258b3383cf3358a00529c644a79cda19d5e4488b4b6c8869fe1b5bdfa5f488a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUBEC2415265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc61e4be094766cd95d72013d1a09251b2246913cb7417732c48ed686fd4f8a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/INS922400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46916f15027fdb930ee0690ecee3d284ed3a695b93c4667588b065e4a2173ec. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/INS182401002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174f4e4e3e44647ab8bcd325278a4a6a9bd0252f68c63673d397f47bc7435051. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/INA1I2406073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4b3feed7db88abf0690b6b922e248b615cee13ad174b6760622be295336cff. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INS182401022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d4533b3fc25821dfbb351ed6f014dadcdf9cea6e06ff4ff0ddb78a20edeacf. 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/INH682400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce3dff3924aa8e2298afbaf7e09887e82d349bb55251f5d5f5834ce5eae0069. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/INV792412484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1aa6a46a61b850d1c20761c2e607d58544d50bd05c883e244a41e96a68da2ab. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/INV792413013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f25eaf239e47a48e03bf0b91bce91631839f156ca0ff3669faad3acc5d8e7c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUBEC2504507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9f5446330b670347277d8a750a20f33c4d2d687d2a7fb2ff9b67d937b2b9eb. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/FR59R2582060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f97d50c9c25ce717b603d81679934c4d4343a2a72c442ae3da0318181112e2. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USA2P2537726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf774c672eb87af87721cacf11bd4723d1ea475838dac63995d37d4dc42ea53e0. 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/INC622255773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24ade82270abc603b693c323e8765f8ffe802484a2a3ac6af9f3c9f82d1e1fc. 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/INA1I2310827.