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 0x3105dff82095b6135cb6c8c3bc499fd4cc1dd2e0c7b00509fc06475ff72fb3e8. 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/1f65f47c-ac7a-4568-8cfc-4f3c0a3928dc.json and https://artists.proofprofile.net/proofs/artist/1f65f47c-ac7a-4568-8cfc-4f3c0a3928dc.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 0x6e6fff2bf3fa7587711af073ec9a106a245b4bdb8ce7cf99518e6657d4725471. 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/UYL842300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d65b1c70dbd01c8174dd4c7828b88310bb35a7c68d203258b2d15ba212b544. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CLA1D2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37df6200017eec8359eb6c8b919a978c065027b0b8877b80473c4eedca30ef99. 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/UYL842300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0c063d15ed30321431de3f1ec251a3c9278b3b34dbf5cfdfc14ccac691c7eb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UYL842300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050ab7cd44ad88172c0e4d7f1ccdd430c12e6b6acc523eeef48c9bca4b3025a8. 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/UYL842300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2684f5a84967fe1e0a60fb84cf040bce9c7aef21831eb3806a3c9b8e203305ed. 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/UYL842200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961251aa142515b9d672f45c5fc7751734972b76bfbb3fcf4e6e4d9a1cd59c57. 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/UYL842200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f1a60364096a8bb378811b805046800fa110204ccdf563d471ce66965687c9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UYL842200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170106089a197e9b9bd5041bb31c31d78430429ec627dfc700b327bc0f618e71. 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/QZDA72269490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ea463fd829e163f5d02d4f3d3fad4eb50d9056d017cf84a5f29d7359146783. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA72269491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b554d9dbd81b7fd50d2d429c3b8b880ee27f422e2d718fefb06115ece259a61. 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/QZDA72269492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa92fa58d2aaebdd058d5fae04b894b5bbb3a21a782b09ae6b399d16b5b41ae. 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/QZDA72269493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb13e6b1caaacb5fbbde8cc42b41eee0374d73360165866d65db2648280ea44. 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/QZRP42132193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd744d672702ac8ddce2279f94380067efb1ab425250da242ef8360f07acfdb8f. 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/QZES62185297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a64a32a009744a8c4a033e0bbb3e839aa1f1684dba2fdb5d42265889e51f984. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMEN2054311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952ab148d97261efb6678e76e046c4bcf411322cd3c18345ba001768b0a0fc63. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6Q2096741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0810b7896e5671fe1d9a171b8eb3ea2385ac8d05fe5b16cb9b8ff54e7e9c0e9. 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/QZFZ42196829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af17366f57d7bdee3cf65886212e3ba26acb92806584656f90f4d3bfd5ae4cd. 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/ESA012522062.
De Cualquier Manera (Kail BRL & Kylx Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56384dbbbeed60035ea2f824fabcaa416239cd87d24a19ed994d245bb6093b76. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES52048727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b60189a8b55a9801e2f507587d8dd8912bcd72a61c29856c7adcab5f2b6959. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA62109694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5b9bb98e41d72540cfa42ed506bd90220957aa686f524bb8e8328d4d0bc9c3. 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/QZHN82399837.