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 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 0xc3df1c83dbaf8d09c2728770180e8bdb52fd2151e79a316458cf234c10e18d00. 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/9f45d06d-03fc-494d-b29b-36bfc3175836.json and https://artists.proofprofile.net/proofs/artist/9f45d06d-03fc-494d-b29b-36bfc3175836.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 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 0x925884207680cf70393b1fd66209e3dfb2c74d849fe238ef6ce355e200ada8f4. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZTPX2344531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e1c18a5074fba15cbf7d0cdf344a91f39f22422b7f7596b797067cf37cc69e. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/QZW9K2336041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad2de71ff979a82656487f6d4905689c1c4aacc6b8e567069bb94a9db336fcf. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZW9L2369175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f401a59fe19d75f4b4b4db84357baf14fb0ec361d31d713f8973fa40d388fb3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZW9M2326153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f4b05bda12a4b68395a6aa3ac68f21ef92695eac4c92a97755e02f46447eec. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZW9M2354855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633605e2936631bba8a79174cf2c11895ddc7b34d0aef2d1da8193470b49eff5. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZ5AB2448774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d0006a282e8409898a094cd3ef8a37bf684fb644b09dbdead1a20af80f1d2f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZ5AB2458347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffff511c531aa1928aab30f1dca7915ee4d265265493115ae3a572778a923f5d. 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/QZGLS2472560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391248c2e1aeae62c5cc4c0e274548a85e590e44713f62c4ef7e27aafc96c48b. 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/QZGLS2495373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8383a8511fd92103f00ad04f082e9c59db95fa8d96575b2a52e311ddf4ddd4. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZMZ92461079.
Me Dijieron Que a Ti Te Gustan Los Malditos (Turreo Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b3bc1e81b5bb108a122ede05bc3a3da5cddcd86b5e205f0c6c82ba4584d6a7. 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/QZNJX2413521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bb6257052bfcdfbb67b09fab7709a02da1da887721dd1a6334e205247d3026. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNJX2432252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec1a01cd88647a61235f2d820d47cbb4193abb6837ed0f1066217f3cf4d9cd9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNJZ2407889.
Frikitona (Se Tomó Una Picky) [Turreo Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd040adfc3da729c3a91379695682e34c6bd6d3934c959195f34fa06562ff321a. 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/QZTVM2427625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffbc2ef8d243cc3c47863fdc889805741b49debd8d40d09b994d59a5d4cc6e2. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QZTVM2425421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674a893e26503976e99ab138e70893693c29e31ef172b967e3fa3a8b8288a74c. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZTVM2449300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5e9aed49db9773f807419915ee51e64cff23eab99e7e7df8a5a1fd98199de6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTVM2449825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5beb56fba50df4068b37b548b59575a2e2169b293439a9895921579bb302e4b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZW9K2401348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125d0e327121d0cea50abcd100c37e3f6edc06cdd5448da8270e456579d961b1. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZTVM2493790.
La Mayoria De Las Nenas Lindas Se Mueren Por Los Nenes Malos (Turreo Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07708ba99a434d38f48d08143e3d111a1544d45f93a9ea304f9733dea7920899. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/QZW9K2466692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd05f5b7eabf33a345d12e9b9019bc72120573da3243f6de70993a033b76bd19. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZW9K2465586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aab3b82722e397e7270118a4520c7ba103254bce49e2573b5d7d857dd827282. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZW9K2484550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eff5b617afce2e85d09bb9759e374e9b74655e95a2f1d4aabba4176fcdeaca7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZW9L2438532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac00c8c56b7e1f0ce7dc1a6ef36df9e800c0512ef71129b1b63b494758ea77bb. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZW9L2453474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dd27e5d8c2d3f2abefc273d55cbcc8463bf28abcbad1612c1fbc98c7d279ff. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZW9L2453639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4920d1f7e9d3b9f5b74e3949da2cf6a450b398a9d62e4d445d51bee4de6656. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QZW9L2490636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61a852a92bbe7dca5452af34a37116bbb4a35823a5eeb4bbd2431c7c10e2dbe. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZW9L2498925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65e59913020992d0cdaccc821ac6a3cacea7938bc78ddb7b45c57eff2ac2de5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZW9M2415961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f50b46b7890adfb42ba9f82fab3a03ea4c26f29f4c3e3615deb0c84306e2ee. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/US7VG2506465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d62b9fb5aefbd14adb9c028f91198667470d9ae4ad09460784326c3d774d6e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/US7VG2544511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86418208ff48fe2397837f19d10ec0f0431bd93c79db9abe936c072680d210e4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/US7VG2553693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f34b484ec14ed96ba76a3f1dea2a7e4e57c2ded47eb82746c194bc660bb6abf. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZGLS2599883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb590f4b9e18e2e437d087a0483706c843f1147d7193f363bdc4126b2666da177. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMZ92527672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229bd2dc9db61f049fc2f5e5323632473928aa30da70312510c30e8338c39cf3. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZMZ92546937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925017f5cb1c93c6de65823c6ba500fdf4af42c841a8cd407cbdc5069f43c4f0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZMZ92555274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e04cd5c181bd4a57a607f70ba4e163da885dd9949ebf75a934e78dfc18fd88. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZMZ92571890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4752ad70ec57a229f98fcd5c00b7901b97a3ff88f3fa5c2a2976048fb8f1a0ba. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNJZ2599659.
Deja Que El Mundo Se Acabe (Turreo Edit)