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 0x59f24128e9158f21a69b35ec6422343a3e23d2af265f7242acf3384fbc936bea. 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/029796b0-b357-464c-8f65-75eb9080f29c.json and https://artists.proofprofile.net/proofs/artist/029796b0-b357-464c-8f65-75eb9080f29c.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 0xf6077775b5a9c746d8eb3c299900c41d827f89883a51897213ff1f62ec8b25b8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USJ3V2043187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfc96ebb408f78f241a08e3805caf386728a08356253483da31e3f5b1b70f36. 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/USJ3V2043189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8bda66c1ba8cc3067ece96d7b40fe8f9b63e88d13d7ec3bbd0d94cf478816a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USJ3V2043192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad76c2008b7ccec74576fa625bfe674a044565f222ed6bc0256f2f4c693013b7. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:26:52Z), 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/USJ3V2043193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b9a1beb736609e1ecd71d1f39570e86ab83819f9a0f499e242a9f00789add5. 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/QZFZ22355333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9070581cbee21b9c2bdc17fcd56a10789369e12705cd8323a469f6f828924d00. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZFZ22355335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe559844a046afd34cab1da3c6a46a9f5da8bc508ee3c744b2c1c15b14f4b001f. 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/QZFZ22355337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8a45543747030f5c04bf3f0804f3a2382a8fa8c85c44fa43e7a5a4181da76c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFZ22355340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7a76ad88a694379d6537dcf947fc0618f26d86dc89ebcf37a8521378e1a720. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/QZHN32488476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff050f16ddc19272701988f17fad38f64d7cef6934b1e854a2f0680fe6b633c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZHN32488485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc596a3449e2e5bd7b37247ffcbbac374c35cfe6b17c8fc761556401d7a81929b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:53:17Z), 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/QZTB32279645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446a86230ba3465e461cd44f26433704a4258a3e91522a0a9e4e8b0956f2a30c. 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/QZTB32279646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4f00e504142fafa7f2f7bd66aad87a1a943f74fb0bdfc88f879a4cd9071373. 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/QZTB32279647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5fd7bd0dd8b08f5bad66e2a73818d65ae3711c26f64d09eb572d256a3a8fc1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTB32279648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb7908bf2600a09a72f18b8dd3634bd276ac68b17bda6b4de6272171638e7c3. 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/QZTB32279649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8032f037fdd3f9ea990179b7b1579e7ed1ae2a6053e84b0f38b1a509861543a1. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/QZTB32279650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52017d258ca2dd164e58b06a41986722b962f1c129c20b63a1da3ccfb4d1c6e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:17Z), 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/QZTB32279651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e77b52033752cf2cb16af5b37f77d59877c99573a3fbf0a2aac853e5b41a39. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZK6H2331108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2026c1ff4e5194988edd2e13dfacc4c9c18a96279475bba74ab9926dc8a2881. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:56:44Z), 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/QZK6H2331113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68ed14c8d417016f646cf0aabecf38b5a82e2f06c8b0f130617ef3d7647667b. 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/QZK6G2485629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349e17aff0147bcfd21224a6a559063b3e1838a18fbd691d8f6ec0871bffac43. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:15:23Z), 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/QZK6G2485633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44a32aa01f38371cbcde69af138fc23043da699d9b69085145819cf9e457b64. 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/QZK6G2485634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b98526d5b01dfb4d34169e4a014f871a49d00f5a5b11e43d2542d628aa993f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:56:21Z), 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/QZK6G2485636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf394543f97da7351c950ec1492c64e1d20c4e1da2c59e7a11aa3be2f3ad430ae. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/QZWFP2446715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8895b9fde484e673285d34366594cdb6acd22d3c09cc1daff5f3a6065d3ae90. 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/QZWFR2327004.