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 0x28af240b5f81cb0c70532ba791bf6ebd64521de4e8bee11c8772c3e972e002c4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c759f96a-8946-40bd-906b-59f874c6a0c6.json and https://artists.proofprofile.net/proofs/artist/c759f96a-8946-40bd-906b-59f874c6a0c6.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 0x18ace869e1eb825d600c86cb1ad88fed08c049593841b05a88f552691fa12511. 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/ARA492000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ace869e1eb825d600c86cb1ad88fed08c049593841b05a88f552691fa12511. 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/ARA492000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122b140daae17d9dafa929dc41163be4ab29f5f2a2e28d80e64c5e5817c31131. 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/QZW9K2279091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3313d2f65d7f3384576aaec6941637e444f7d6de04711fb1534c984117701619. 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/MXD782300573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36eb2f01d3782449bb5b9d568da62a3dfde85948509d4ace6ecf809649032d4. 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/MX3741501554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa890ffa098e732725cba6eb3afe6a7f4e888c21c5c4f0762982d8f91efecc7a3. 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/MXD782300342.
Cumbia Gabacha - En Vivo Desde el Teatro Metropólitan
Ritmo, Sabor & Cumbia (En Vivo Desde el Teatro Metropólitan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba311138da25d1c17e4c9ac95e36d8712f4314388bbb9f9565b4df5801393282. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTVM2310343.
Celebrando a una Leyenda, Segunda Parte (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8435ddd319b5d820507688fe79e230506621116f9982938c544f830bdbcf83ff. 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/MXF012000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8159396acc1ef67bc2f14eee3a1fb1b25ef03cab3055d220e8174236500ca94d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAGY2374577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e231aa52094285fd4f25ad31d8a3448c2facc749dd6aec89389a23b0230139. 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/QZTPX2211598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8f6b84c057b007a9a664e9bee33b54df3aed2c3f9b6bd900d3b40e9af89fd6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZZEB2329999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04202ce87b397ad4e5584e88389d1278bc4c78297f90614d5e3c0bfe5f49ec05. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARCZH2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f075121c65e68318159e1b7955fcb92a0bdf7c2d0d3703a2e30ca15172ab48. 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/DEKB71672607.
Viento (feat. Maria Barracuda & Leoncio Lara Bon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6004f9de194e882b737c3aae1e7a6c0440e1d98b371af7fdbf9eff2f74fa286. 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/QMEU32404761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f6e2825d6c30c8e90ccb2da6ab08c913f9462df593686d5a6f846eecb62f51. 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/MXD782204001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9102e6f0c57eb1b51f523deababc3f17ed8fef9e9d338372dac585e1ec28f61e. 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/MXUM71501793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6eef3685da9c45ac88a65e9d76896a9fc0a7dbfd57d9c4379540537bf0ba9e4. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/ARA492300086.
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 0xbe33a8073d06d95b93102ee728a93bfdc9c45895fcd29e7a959f69304b859754. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US7VG2552770.