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 0x6ebf0767c897c6b3ec026e4b63a80ec708472bcbaf8ac450699e959aa8311121. 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/f871ee81-f86d-46ea-863e-d3d065fca2cc.json and https://artists.proofprofile.net/proofs/artist/f871ee81-f86d-46ea-863e-d3d065fca2cc.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 0x0b3f9c7b149e52ff73bb308d9f8cbb96d27428b7fdf83d767aac455245a67154. 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/FR96X1693404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30bba28f3b00a0fab95a47ddc01b7abac90489a25ad2034e7608ed6144756b2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX201744339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae5bbc887f6e9d824bb3641c055d94f6bf248f3201b34037d1fa1cb0f54e12a. 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/CA5KR1927872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9698e1d06f0d52ddc3384d40256fa557ae1b402e58434808ba969955f4d87bdf. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:45:47Z), 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/CA5KR1948770.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d674b3b4cff0bc32a3b58f903c29ea8ac825dfc6f040205ca26c55f72b71975. 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/CA5KR2011175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaba173af8118051f50b7a6d0ea0dda7b5a292304b73b80bee35696a431b10f9. 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/CA5KR2011176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fe9f3f48a1860f4e1eaad36ed2e89b06b27306cc7adae610d660c00b2c5921. 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/CA5KR2011182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c0e4332130cff954bfd5c3e22f07f5038b0797c4b06dbf07f67f653f22503a. 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/CA5KR2011180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e270dac89c131b4963aca945b84a69d5ccabcea5dcc63e764aa2c33175c690d. 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/CA5KR2011181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc221aa072d62d3f90936063ad78949f51bd03c61bc2281e11537cac9a7814f5. 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/CA5KR2011179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c936e6b6618fae5897b3e1bf9f3417d528f9f2c32d03d0ea753e9db96691d2f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CA5KR2057534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520c08c9c7ee0752cb393ffdc0de5b2d054676a8bcc97c76cf1b452806d92d05. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZK6K2093407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339a9b269683baf575c9f5de80cee501a4701b24ff915c3e0cf5231af70f54ac. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:49:27Z), 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/CA5KR2092940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd0cbaa0de9512839dc34038bcb51f7d5c0dddcdd7c90b644e304dd745011f2. 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/CA5KR2144855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b55bdd3302c31d0d89425dbd9b8818f2c0222492ad007eb8875015000137e02. 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/CA5KR2382700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e47688d8aa7ffe109227981103f80d4dcc122aba13ebf767d369d4321a7d031. 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/CA5KR2388518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457f4c42bdfd97dc9b061866e945972c1af1e077c1236a855bb8a7be66ac3ca9. 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/CA5KR2384951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6735a009a7b8364b7cf2b2e8f622090f7f49054c3b28e2e0c060ec70cb982887. 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/CA5KR2388524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffcbaabf648ead1353ff3e3e4dcc8aa6d8cb0505fddeb20d01cec735d6f6d61. 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/CA5KR1822146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f4480f7778477ac82ab5f7b2abb4ac8b41309b4b2bc94648f1ce6483eb0322. 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/QM24S1845432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094c668ee2174f2eae96fa9e2d53395100504c6a9938fb30851d769d923d57ad. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GB8KE1557929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a08523bd81e726d8cf4dcf66b09f3f2ef4db097ad7bd675cd8ac791b6379fe. 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/CA5KR2191433.