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 0xb6f9babd364dacb6050d4eefe917c75887478f49b3ec866669fc514fe0a4e084. 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/2b5ef850-2e19-4f30-8e0d-724ba3f6e4a6.json and https://artists.proofprofile.net/proofs/artist/2b5ef850-2e19-4f30-8e0d-724ba3f6e4a6.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 0xaf82dea7de791baa186881b5d92da7d641cf1861fc58afac6f759ab484a8899b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:01:23Z), 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/USEL10200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83ebb8a0274f509c4d53c384ec807c1bd9eb126c614207fd3f02c857090f057. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/USEL10200137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9eb23f4800d8699819a827a6a771fe66dd1513dea9fb784494b78d781be5d7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USEL10200138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ce95a867946c21364db011a38d470ef61a47b91e377cf3bda1f5b8c715144b. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USEL10300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b046fb42ee857feeb387b825ed2c40d44386c962fc6537503f8d3da3d82761. 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/USEL10300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a22efea8c3969c4e2edba356e77940b83ab0c64e65ebfbe2d972f4c8601ba1a. 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/USEL10300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f08da588c71e4d959c0ead21e2def4c10cc894dd2c4da074c9b6baa871f534. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/USEL10400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbe46668f6edb269d1b22a7d5b3b99cb1f28beac9210bae484e0d4a975c5685. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USEL10400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9539e18c92c55ba702dd4bb10d8d471abe421724f51ae1409bc3a7e910b8303. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:42:00Z), 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/USEL10500239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53413c9240415a89f0e5d7a15f85814226cd5a4f7f9b0e8d82e8aed007a1282e. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USEL10500246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0fc33420625a2dcf4f8a20e3572029235fa31ca06286ee853ddb3ce6848600. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USG2M1500120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ed0a561f214686f01d8ad15701a0dc110956436ac7f0a85568b6e930f46e33. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USG2M1500125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed03524027a7f55ae1127060a5b7c2f51c166e2e8f89e02985727890bcdd4c66. 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/USEL10200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87f445a2ab5f399b7717bd5136e1d893584a83192869b34f83e05f7ec5aedc4. 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/USEL10300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87f445a2ab5f399b7717bd5136e1d893584a83192869b34f83e05f7ec5aedc4. 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/USEL10300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed03524027a7f55ae1127060a5b7c2f51c166e2e8f89e02985727890bcdd4c66. 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/USEL10200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a10106b143e8289b5a17c9b12221093d600024386d7f41158e3436ec3826c6a. 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/USEL10200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6236e74d821ab4d4d0a4ea9bae658e549a218b622a21e66efec4f8ffe3aab5a. 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/USEL10200143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddfb9387cb3ab85174966d909d0d8bee08cfbda352ed677cb04158dcdf4a0a1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USEL10200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f494b251bb20c0c0a7d312c502b856f333ec73a2c2a77b0156a7772438cb64f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USEL10500243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde0e8ccfd3caf2c23d8a6087d50508c9d534528f57cbe8b69ca5580b77a732f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:47:26Z), 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/USEL10400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d8e20539bb041ac9564d43cec8c219f49b017bf0bca6777eebd1c034b19542. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USEL10500244.