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 0xcf05e2e6f20741727b92b6a9e48737c468fb185eb449e496f5345d3aadaea34d. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f48e57f1-f196-49b8-b451-7750580ee88e.json and https://artists.proofprofile.net/proofs/artist/f48e57f1-f196-49b8-b451-7750580ee88e.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 0xe9e958624876ca48d2a981e68dc93b7e0c4ad05e82c1ef6ac4d2be2812a978dd. 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/JPH202400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6862abd8bd1ec29c3afe302bab34430dd5e168324dc2ef29dd2b6df92b9b4ac. 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/JPH202400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09fd44f5b52680935fdd6b678e8181083c27a02e27356758ab280c7d6a8f548. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:21:18Z), 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/JPH202400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756a834a6a4ff10ad694083bac30aa0670f4ce57ef63e9059563eede8e957817. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPH202400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0719855530533b5407d4f497f207942dacf5b0ef1f32a542db675d9a827d1e. 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/JPH202400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f28c649c78d84e46256fd539c6c388c522a18f465e3ab6bafef9031f14001e. 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/JPH202400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08aed5378d29f98817b414ef4d587dc8f2dde207603b964ebe23478e4e39eb1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPH202400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168a59892c72802d8736309ac5cebf6e9e37be8062598c4a21cca624c7a3f8ca. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/JPH202400122.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0199885f92c2c4a488f3daeeac7d755e7baf96b3a75703e0b75c2bfbd729553. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPH202400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5335c84bb79c48a90be79689856e7a5e76f8c81d42faf4f84a07f32d6e409252. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPH202400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a53150fdcaf1bf9f71e67a2ea80c723b6519d4ef1804cf31ecf1ad2e9c71b50. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/JPH202400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25231efd3b3c83b0754dcbaba5ec2c71609c2c59754932a6fa69cde5a5446178. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPH202400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501d8e177b0fa7e891e498a2cd9f517bd20e4d79d58cfa6a8c2519c1f0567e16. 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/JPH202400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8f1a53e315b01c35b84694c3366ff1dae7e5390646bbf0b77163bb5b3a28da. 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/JPH202400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef1517c44f41cbdb31962fa010f02913556c7f4178342a30e3a5f0b60d860d3. 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/JPH202400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17abe3277b94c985f8d857ec5af82f41e421afc8c744a731f2000dc95d01e4e2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:29:57Z), 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/JPH202400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8244fe88d8ee9f5d0fba1f03da550f533a4a6a304d628cf4e2e515380f202986. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/JPH202400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12929f5193e81cbc6405a8ea13912617e455349d23683bd4caa6b216758486ce. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/JPH202400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef756c75ab1dcc2bca0925cabc54dda9391b596cd021d6a026ff245435ddd599. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPH202400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8712c2bdb1904aecbd58c8cf15012411639fd9ff92474453fb01719a100801ff. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/JPH202400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2242f2cab08c65f9d78756d3d144708999f04b65539c5e3424073d9f37824665. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPH202400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26267ed9b199c621daf629e6fdb3e29c4c012bd873cf218afc7d4e610c257a08. 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/JPH202400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543eb855826a676353b0f9faf75f80c06118c07429b3c8e2dd7606543b2a96d9. 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/JPH202400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54ca62c9b65e2860f9c5229c7fd08276db812df4a0e74ae6e0cdc8f28947730. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPH202400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda54d3a35e902fa469b4a00d7a9a5e47120fdc8b567034f7e96aa3e9b877ed4e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPH202400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ce33601ead93d75ec39303568a4c50a9d5eb230adb08d1703d411616c16e09. 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/JPH202400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ed79f496b5c485be9748a47ae129f46c45c7254cc34b7c3aaef64c22efd794. 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/JPH202400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ad7525214a1d8e944f6534dce3cb7a6931aad4bc0061b3b374c9942a8cdeb7. 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/JPH202400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd1eb6b74fce8e6e0ce0670757b291a06ba848c31c7a7e13afed1ac190f6769. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPH202400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0173bd64a2675157a9cd252f3262fff10df698179421f4d7e5a321d9e1edb63d. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JPH202400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb902834f338fed999a9a854e6c5601b6a07e029fd00b2312ab3289eb30fe8f3f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPH202400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0f7e4e58322b80407027facba8473f91eaa56f31c8e0155aaec73e75edab6e. 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/JPH202400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe518f6185aaa4e2f9efee110228cef8169b7ef4983a6313c3268dbbb94d92be2. 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/JPH202400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc675e7c3acb8e9d38be693683a796501a0087395fcc8da60781679c7f88ee8d4. 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/JPH202400097.