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 0x4702c5fe1520073c6b04020021d77ae2eb510e32f4dc371a4cc79d467b31a282. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2499208-dee8-4a42-979d-a054cf662629.json and https://artists.proofprofile.net/proofs/artist/e2499208-dee8-4a42-979d-a054cf662629.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 0x6ed6e467a1c6b95a37448432c3e2a678718547405af29ae4e2fb03774221f939. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:27:10Z), 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/QZS672187334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b69095912d35735c644d10b1fdcbe9c63d3b31121024f4ffc79383577cfa8b. 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/QZS632134581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14af1a042afbd70d442f17a3b76f8f992739ed72f894601fffe59b0ae33220b4. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZS632179362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87eda79a45eba4079a742164ce02d590c8af4dc393340b9005466a5d335c1ac0. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QM42K2239719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34c21a183b6bbd41ebc2e20b469ca072528d80725152f1f1dedb21679e68b89. 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/QZMHN2228335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd999046c3c36125d3594538b18f42fc55048c584b7d6494513af2a96a7d2e5e3. 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/QZMHK2246925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b61b46c65f9d691bff5e33a3f6e49927cdeea165e1a4d4f6d6e1112b76c61ac. 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/QZS632218184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800a137026d2839828056c335dcc78a3379a336b18ccccd44c0d8eeb764c8153. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZMHM2206545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566374631e367385ccabd22e618683afaf1c282852f7bb782d99095364e57562. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZS672205329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbbd22f33d1cd658dc9e458212c4817f3fe6db4ff38d007c3c12e6bad988bc3. 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/QZMHM2242489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3da4d4ba2ecf21fda31f5750222aba4c33ba051b7d8b218c95a7443fd9fb3ac. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZMHK2296761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b501d869e4b98ae9053962972f27ef289a6f85c0c8d804bd817ba5d64216312. 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/QZS632234445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6f6a2c50ee2cd833750013c1fa7089f500ba81fb0c9151ff612ea89e8bad90. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:08Z), 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/QZMHK2264373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4044ad1b3fba8c362a32993c4ec877347138f482bbf2812f173bc10b3d3a6585. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:03:50Z), 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/QZMHM2257079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8b4f0925f87d90672cc3bd9caa57708dd9bcd0a04067710867f4282b4e2c16. 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/QZMHN2295065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b05c23b6e5efab3367d2ad69ade3c699f00555e55b7193affb7d6763901460e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:20Z), 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/QZMHM2246462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c144e00a5f4bc7f9c68dc3407fbd435ba503ac9fc3604b5babc7e48ad6f76d. 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/QZMHP2306690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4374f0b8e86ade6f1dbb5089e3e06538e04ef6ad7c6fc7c4039d8a90502d2d84. 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/QZS642397922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf800bcca252522906a5229fa14daf3e8b20f10d40188373fa6488c0460076dd9. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:32:13Z), 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/QZMHN2309566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4fed72323ef23371b721352283cb4eaeee65b7289078cf81e02b39f8b11da6. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZMHN2340983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4354119a885b0a3c539ceda0479621efdb454327edb883ba2e57f2ff1a4e4287. 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/QZMHL2332578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2028f444e880f8c35231dead7e1d5f58e9a25f8407dc72620b6b447dfe23c84. 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/QZMHP2391152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25775a1e58dd5b6c3c8fcd41e88f155d1fc94a761db80d869bd3b4865b83838. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZMHP2313980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf92fd6f7476e39c6e54bfc398066e62d1bdc9f1033ce572b62a29b1c3ef650. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZS632332438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e81d2479c850af48bc66da4632335673034f826d55d21e1c571941a94c8fdb2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZMHP2387976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b712732f4c75e9073146c06e2bbe32cb000cafd8014fe35f6f8640aa75a927a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:16Z), 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/QZS642374241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506c7fe4f4baf2aa4554d60b8d9747ddf040b818dbc7f3900b8dfa7dd1138399. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZMHP2382050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480ffec02e5795f0fb7ef62297e26935dade902b2823b18864bfdb0d037eec10. 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/QZMHK2394157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480ffec02e5795f0fb7ef62297e26935dade902b2823b18864bfdb0d037eec10. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZMHK2394157.