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 0x9ff86e565df34058112ac58a82c6c78dc03aae407fe08d0b86330ad0d5b847b0. 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/4095f594-00cf-4613-b547-079b3e2dc4d8.json and https://artists.proofprofile.net/proofs/artist/4095f594-00cf-4613-b547-079b3e2dc4d8.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 0xfa81e919c94b62e3175c71a10ac4d6050e732f3fa9e61eac3039cd9bf61a8abb. 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/DGA072138600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260baa7ea1a84ff84705eae9becef67481d6619d2cb7c30f23d86699bc3778ca. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FRX201902381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa81e919c94b62e3175c71a10ac4d6050e732f3fa9e61eac3039cd9bf61a8abb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA072138600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa03af1f92da922a9cd431651d5c11e0c9de4ad19852e0256a848ca304fb8122. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZHN72128179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abb3e89030d8853f6cc3e102b83ac3542320ac010e3d0bf453320b69017f765. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN72128181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa522e695c43fbbc6740de93feaa90d5ddeef276c6f59f5232002807c6a2a76ad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN72128183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a2efeb43d5709da707702d859713f1e0ce9c31bb6d662b5e968e2e26257071. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN72128184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7735a7f467e33ac1c5ca4d1ccc8d0839a1955e0a080a4a6470de9115543ea86c. 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/QZHN72128186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a32f98667893a2a039a36a82e7b3303941b95b6c51645d29ddc0166c21f256. 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/QZHN72128188.
Intermedio (Desde los Catorce) [feat. iQlover & Jarabe Kidd]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c2eb53af90bf8e0a54e6a1bf5d2626563d4374be28551022f20c7afecc70e1. 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/QZHN72128190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba70feafd6b45becaf0f1cf842f96b120dbc58e1231f49bcbb899914afda2d7f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN72128191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9a24c85f9381ccb965252d3dee3254c8ac3ee8db6f30fc0353374df27d817f. 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/QZHN72128192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dadb2c098a0a639c278ca5d3cfecc7026b672e9b765fef2227284526551fc0a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN72128194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad469fb167a16525c01c3003ae06c1da5163d2bdf9c4896f508eac392610e651. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN72128195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafd9e25753a28a5d1cc4d3649cc4bb5c5cc7f7f40670cdaa3f9c30cf0bf545c. 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/QZHN72128197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfa07abc9f0333a5b3a5208416df5bb3750261933acb2d35869edf834f26c05. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN72128199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aac151fd79579ae438ed3fd4553133845682247ee2f30e177ac3730aba554f7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN72128202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bb25069526d1008e7bd95ac46e434618b965a3f785b66b776e07276e8f7e85. 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/QZES62133536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d28d6209ce0fdd3632952f200b4ef7d2132661cfd90fefa7a499aa71c8aa2fb. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZPLR2030607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadf2890dbae9857a933fbf76eb9e6bb5480a4ac5a1bcddb0f15dcdcd891aa3c. 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/QZNWR2025687.