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 0x9a860b9c70dd7bfc17155f0956ec2967a341b84964279c0d5e9aca78566b7dad. 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/7c28b555-44a7-4553-b958-7f1863a272c2.json and https://artists.proofprofile.net/proofs/artist/7c28b555-44a7-4553-b958-7f1863a272c2.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 0x1c39efbd6a38b0f64706cc2099a463d3db62768048e31cd3ddd27889ffeea448. 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/ITP530800256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edfd2660df3299dd2933c59b1d83343cdbc2242a00583a8cc53e71cc6483ff1. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ITP530800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebe817ac3762d49c29b167cc01add91b16276fbbf48579dec8cb953db2c1713. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITP530800246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c39efbd6a38b0f64706cc2099a463d3db62768048e31cd3ddd27889ffeea448. 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/ITP530800256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384593b61f88e5ecc358578ec2c2e00c8cfeecfe5263bb0be8edd908146f548a. 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/ITP521500267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b1833b44a02758e73fc86a4b5e6ff714d7ba8df94dab37acdfce942db77e83. 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/ITP521500268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd94950994087156506422ce00d8d341d82a0e441c123aba8ebf4765d856e961. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/ITP521500269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35f7b7843ae0df27c056b863aa422052b122a3fe692e62174fa6cfa7bf6ba7d. 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/ITP521500272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a82751ba501febff79368d7693545b1e6d45249d6111fa754c15c9c8dcc8c7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/ITP521500279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b1833b44a02758e73fc86a4b5e6ff714d7ba8df94dab37acdfce942db77e83. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ITP521500268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a82751ba501febff79368d7693545b1e6d45249d6111fa754c15c9c8dcc8c7. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ITP521500279.
La Cucaracha (Ballo di gruppo, Line Dance)
L'orso che balla - Ballo di gruppo, line dance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb63ce9972213c1f61ba75c9132453b32ffde7e7eac2ab33d7de8121bf632897. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ITJ321900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcfd5ad36df0d3d7dee296779fac2bc94bae902f7994ed08a13fd1f296168c5. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/ITJ322200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333c8104636e4227824f2e92949925617e926be0102206dc3a1f0ecb15399eb8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ITJOI2500014.