1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5162e5565fa58f593da65f0d33f44731ceed3483a03a55dd8c5c1078da2f8e03. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f08f821d-9d43-4b32-af02-9505104fbce2.json and https://artists.proofprofile.net/proofs/artist/f08f821d-9d43-4b32-af02-9505104fbce2.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 → block OTSBitcoinBlock must exist at that height 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 0xdd877cef5fe768a41ed00f4cd29ee8bc54b99c0358d25701a9bf735e43e3d3c7. 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/DEQ022004416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d8463ba7e1f48cca209e6b4c92539ffae520838b616506129ec2621fe8eb56. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEQ022012467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411b16d6947819c020d1fdb546e8ec13715578bee4fb0aa96cb4075ab516fc12. 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/DEQ022012942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7171c16d3a0c78c7b29ddc447454793c38f94a3aa3464fd21888ec6fdc467c. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/DEQ022100550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2ba051f393c2e6935a112f0ad859069d126755011796bddc1162996b40b084. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEQ022105341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887b2e1c3df76161b5b2427443982896e98f8bdb311debf08885e82ee4a0543d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEQ022119563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2336f0766391af9763e2277f304ad25e23779e4f723bd489dfda25d8674e17f8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEQ022260137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e90d2194f935ff69ae9954ec6d27de337d6b7c660f3bf7486b6df8ac4379792. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:30:29Z), 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/DEQ022119564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60a5ad984993a041ef72d17d56e25708747dcac2acfb677bd7e2819271e999e. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:02:29Z), 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/DEQ022119566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd0f5e7c24a43e9bc4950b026df062f0a05f3ac73b5ddbb429d73b8bccda87a. 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/DEQ022119567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c35ede0a01682553fdeb9c87a5e4d9bc75104930345169116fc8d824fb7d5ba. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:52Z), 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/DEQ022119572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fec1b92220ef71a19bb6241df98a4fc37f89d756eefb29bf64b55dd161b8912. 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/DEQ022119573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b50b7fd747ca225cde5d25af901b45a27acc852e149f8bd3d06fc4cb7c3838. 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/DEQ022282595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8819a648acb04e7e181d448eb6ba0de1b194482ad643855dffbc7b62e03753b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEQ022291397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa67330a238d5b8b102a8f07e42a6d5a6b4d2fa8f31a0ba030b2457b2c220f41. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:33:10Z), 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/DEQ022272999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88e88d49951dacc9679f0122938af87319de14d1da55639899357f6d49f18e1. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:26:16Z), 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/DEQ022275329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea03dce657cabe2e8251e32f639845120bf0848d2f28c68136be20464e6f86f. 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/DECE72200241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4abc86cc5bf7b045cc842e56d3c65e935bb1de50e6d7b0373bc7be8d1e03fe2. 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/DEF912100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d00f5f60928385f8e27d71d27afb7b31fb8417f4f793c9d6ee91004212613c. 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/DEQ022101900.