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 0x61ddc3da1bb21071be76d26ba78eb8cfa3826e1e3396cf9f924047d3126c421e. 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/a2240faf-5a34-40c4-9805-9ac8bcf8bfae.json and https://artists.proofprofile.net/proofs/artist/a2240faf-5a34-40c4-9805-9ac8bcf8bfae.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 0xb319299dcd258ed2dad8ba44deaa9475ff9966c7d51edeb9b2c2669c5b456f47. 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/QM4TW2262920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f02b0803ae6c7e739db2056cbafdd51f7ad9c35e8a1fdc9472cb44bb240bffb. 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/QZWDD2490596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf741623f02aaec324ceda333aee89e630e1a30d3dabeba200a3aedfbe46ff0ef. 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/QZNJX2447375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f2d2c652314b9ecf916ddf60bb9aefae785bfcb6411bda8e23171d59b67f2e. 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/QZQAY2431516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532bfc2589596db4a66696c9b1ac0a8a5e6376a8a134a5f5c8ba351b63e4408c. 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/QZKDT2400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9787eddc399993f4cc6b36c3b45378c0dee352497305caf8021912ad2f70c14. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZKDT2400271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ec659004d77cd301192b6f31536d04594785e8e99d7bd968db4e1d4295dde1. 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/QM4TW2491314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a59ee265452320f5e31ab13cfe05ed673183a84f10e86bd8c0c1768da330e05. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:00:09Z), 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/GBRKQ2429428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3882bad54b63036ca958ce03dea91c777104ba4deb8d1005bb2c353309e0e314. 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/USLZJ2433691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d8ffb77fa561fa0c81835fe8079232fb1b36c564e850f914316426f872a4e9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZZEB2332844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad81550c1b6ecd7286b766dc9c56ce96cb45804e1696a3fa56fbcffe9a1332f. 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/QZTLA2433349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6293d468a33bc2050648fe4fa9efa1b7335c1ee44d131b16a320d3f357443b66. 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/QZ5FN2417406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f2cd66e4a3d9d13deacb2578df7fc10996a7ed2b8c4e38c3461d3b3b760f40. 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/QZZ8A2392862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff40a2424069b82ae7c5f19adb317b0d9bc401fe4555a46548d2cae1ff5d5913. 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/QZSYP2386446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ecd41be61aac08872fb04cab1a77e9045766aba87141242f8301c5aeaf92f4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNJZ2362366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc921f33579318e77849e7693db6a58f37d069b8254ba5c7031fadca1f27a03dd. 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/QZNJZ2316424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe22a4814394ed3c0d97602bcc0b6c65e40f329887b9e6effeaf1cca2e32f8d. 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/QZTV32382034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc418909351529cc363bc5a3467f01cad607aa588c024a0f892b1a535bf56e1e. 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/QZTV32341278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90709be66199d4d1a4af7af8ada33f937745be933a863c80a9f812f00a589a9. 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/GBWUL2395919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a545014ab487af22bca12a103e6cc3438935c6d906175177f3fdc757a210e9. 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/USUYG1489194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0b91624d99ee5158bcf54c397da5f4410f9244a597813bba021d63e9b2c3cc. 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/GBRKQ2398801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e2b4c37bd9d988463d126c883aea350a3e061e73730235494414d294ed5249. 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/QZGLS2392309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f231a45d7e26d16204ec1a8a74e5f0381fd8632f2e0dced9b8d222bd1ee70c. 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/GBRKQ2342030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db22f53a651e5cc80d38ffd5ec0b4c8252dcde882df24f6029219f159399b2e. 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/QM6MZ2392175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81abfcfba63eefdb3413bdfd91712cb4ffc9f81c81f98798440b55138e3e296. 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/QZGLS2344586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508f83bfd6bf86c8234c523f177bb93690589a967b3a5985c306065a8e8c7dc6. 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/USLZJ2380735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680abcbeb7f3857905c6e82cf9071948a0b14385b0da1936c412d02e4423634b. 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/QM4TW2389330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036e1e3f155fd459c0af258374d14bc34f04665cac6f36f524794c79d06885cd. 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/QZWDE2253819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3183b2a6bad58ebaf00c1f8f24e6f18fe7c00671fb662969a88359c1effa5458. 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/QZWDE2227642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712d235946d805b00caed410ef08e8a12afe6e6c39f28e810b4b7a50b4802c4a. 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/QZS7J2228156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bec26e5098fe2bbdcd30e897dc954c1b6650b1d82d84b0a684b26c36ac770e. 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/QZTRX2107487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971500b95f60ea5c0277cc84924ec0d3edea42abb0875b2ae4e582e10f26f40b. 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/QMDA72261446.