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 0xe6fb14e62b63953d2331d007bc45a96638f8f32716ce0b89c0f8689a096f30fd. 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/bac9cd84-e7ea-4c21-91dc-ab86000c114e.json and https://artists.proofprofile.net/proofs/artist/bac9cd84-e7ea-4c21-91dc-ab86000c114e.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 0xf067947b6d0924caadac2b6b59de511d3d4e3802815b5809698e27d31fedd375. 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/QZWFN2339278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03cc58b16c1b10e1a9afd398ab099be173b2d7baa094e99087f1d63ead38b48. 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/QZWFN2339280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd749ba045f7983567b05b0c95a0a390ef6e9d022bc8f03e71c3d906ecf7f870d. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZWFN2339282.
Lindas Borracheras (feat. Pancho Uresti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833fb3952215ac1d0ec1358beb2a993e22d334c8d250511b42bf3533a18b8a12. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USASN1500530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a17620a4bdc3d2a8cfe161863f7fc03c6d3e0f3c5e1300a484b6a482632687. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/MXB711600773.
Ay Como Me Arrepiento (feat. Edwin Luna y la Trakalosa de Monterrey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ae4346850c581b7ccceb72e1fe343ace25ef3eabf368eaa624731eea8a184e. 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/MXB711701167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa178cda3bad0199dd92e9f01912844893bff0b9fa8faf0a4a3161e5b98ec5859. 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/MXB711600875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dde701f7700bd6aacabe67fd434ba2902056eecce4549d6cac11fb8161d2f34. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:02:08Z), 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/MXB711701170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7b9fc871c09b00145b664f94d0afd3c63919784ae07f292227c6191367830b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:21:38Z), 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/MXB711701171.
Quisiera Hablar de Ti (feat. Leandro Ríos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde712932690ee2ab50d07e90e81ca4ed5675e4fea1da86e3be8c5990e4ae3a81. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/UST8K1805382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4c388d1abf4b0ae48e5c8883816d63e850ef3a67958cc716b95ed9313d0194. 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/UST8K1805383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a972d032f69155fbfb44ed13eed9160c53a3440938ee2081467f8340433b8f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:11Z), 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/UST8K1805384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869473becf6dbd32733581b7ef311af80a50fbb2d6c51224a46f696aed1265df. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:31:59Z), 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/UST8K1805385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec5ea07d349e8e43d7ae6908820e3c2daa692bf452f1e3ed85cee4dab6561bb. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QM3KC1500231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41ced3bc6911e5eb4b1043e19eb47b3f8895aa0516f1a56fa50b5cda07e77e6. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USHM21935951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ff07c0f77f07cd29b7a5315d02abc095bf408393411c5ce61b435f45f6c932. 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/QZFYY1900853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079adfa0ccd3551c090859fa0af1976822725df4c6c495d993d82a11b9358f41. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USHM21937290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b11ddc5e5f96b59fb1199d88caef2f8c54115ea416e78bbb9cbb122005864a1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFZ41901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e6cfdeadcb09e68cd5f8528f1cc622244c2035d87b26adda4d238b7cb99fae. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/QZFZ71985644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0759b617897d5aa94f5c015f8923c47a6ae8e97b6930c9a2770d4430dc1747. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:21:37Z), 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/QZK6M2230315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9951ac698be31d6c570a05404b3ed986fd59f5c98f564091a7fbd7215919bbe5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:03:30Z), 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/QZMEM2233964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6d20ea78526dade550b3d58d5e65365fe9a031c6d40943462b24ec841b7002. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:22:56Z), 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/QZMEM2233998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d1e59b80d6ddeda348e72edb6eb3be41329a4770267503e1712406eee9a057. 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/QZRP42283836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e499498569f0b33fbe3eb5614fc25f84768b975f3f05bae052270a812276445. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWQ2453698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a61949572c7c3364f03540d189c12f9dc8cc00f26e36550a571d25de78272b8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTAS2449479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651fe2839e3d8fe371b3a16c8150d9968362a445eac2481124eb878e5b6c0654. 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/USASN1302035.