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 0x94f1898310b2636cfc9437618494545445ade8ee81c091ad06c996573499bcb9. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83f890b4-352c-499d-ad84-6a44b50282bf.json and https://artists.proofprofile.net/proofs/artist/83f890b4-352c-499d-ad84-6a44b50282bf.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 0xd0c421ab156908eb4f88e44cee3dd1add2b34d24a94b950fd72a17a996c0070a. 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/ES71G2150019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe191d291f715cac9d70c90c16c4a2a10b64a8e1c3c85ce86c04fedb847b3213. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZNJZ2305812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4756fc46b4a85d409300574b7b982877e308f98f2609e1d5c2ea8586279d9e7b. 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/QZW9M2321281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dd6eec8b7887f550247f940885274ad74afada9b2f1e859301b8dca0eec2e8. 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/QZGLM2491791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe191d291f715cac9d70c90c16c4a2a10b64a8e1c3c85ce86c04fedb847b3213. 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/QZNJZ2305812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77198f589e94bfee301b2760a746f73118310082e83b3870f2c61a229baebf7. 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/QZMZ92459691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f605afadf49aafde21b11c7c7dea45816bfa9ab6acdf3c5195b56d806328b87. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZMZ92459692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf727ee01941f8d387b900b5c179007feefd7c8b1edd1b75de43016074821e455. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZMZ92459693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dd6eec8b7887f550247f940885274ad74afada9b2f1e859301b8dca0eec2e8. 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/QZGLM2491791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c907070b8986e23c346875a47a5f447b9e142a05f2bf6061b24055dd0378c52. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZMZ92459694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe5c0ec51fb5b2a7ea769d3d4b26a5fc491a6d0baa82c7aa881cd184b5fce52. 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/QZTPX2375702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47668ab85301fed29f3fb9bc4d5f8fc273f6ca811ad41f48705a9a85b7611a27. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZMZ92459695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4756fc46b4a85d409300574b7b982877e308f98f2609e1d5c2ea8586279d9e7b. 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/QZW9M2321281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad05526e7326d62bb33cdf6061d6ccdffea088b6c828f9fce9d920330f77af76. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZMZ92459696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0ba64b0da82d1c1b7ae37506d0e042146b9d1e8d0ebd92de12c5b6d6da76eb. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZMZ92459697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645dcc654c289486452ecdd66280a606570463b2baf73e8a4d3dca8320150a3c. 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/QZMZ92459699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5ab81cf1ac9e4c7c10906266045263125704ac11268d7fadbd3e29114e2e4c. 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/QZMZ92459702.
La Hipocresía Mató al Gato (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed14a6a698e1b0bbef40c239c19c261b82fde9d30ae7dda55752c15b90f784d. 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/QZNJV2550306.