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 0x16d5d77c5b6117a87f25fd1ff5f5f42a3ef47631bbf5f610400c0cd8b46fd76c. 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/336caa30-9a7c-4f5a-b6af-e5c5f7cc4d41.json and https://artists.proofprofile.net/proofs/artist/336caa30-9a7c-4f5a-b6af-e5c5f7cc4d41.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 0x9f969539f05a1b6330e087a5355d31f0612e7cd2433a1543e702fd80266a414a. 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/USUM70836982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384875e6aa3f55c867ec3d31d414052b2f731bd5a89b86e3c9ed2c01f4d9037d. 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/USFE50700305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75eb82d6af90a6ce01ede7eab658c3b7865159521c8cbfc44d7fcb80ab7e9647. 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/USUM70975490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63521676662df45e98c7dd6d1736d69c80e03c0acd31d09f35057a8aa99331cf. 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/USUL10000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6288efa706d3114ac93bb3b77218d659b5f966fb0ef8804bf21f8f44090fd5. 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/USUL19900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b30baf3f8e849826cc7ad444933656550723a4061f501a4084e48d0a8cf0d46. 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/DEUM72117002.
Vámonos De Viaje (Bachata Remix, 12-12-2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf816105b7176eb655373fad55baf8f71b46237ca562f510eeefa8f1076c184. 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/ARKPH2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2563d580c3d68fabfcf9e40ee298af22d080b76c51e0174e7ffdb806f8bc555. 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/QZP7F2572447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffe53d02a21e6d93c4d44ebcb6e1818f80af76973770f1ecb7a77943dcbf8b5. 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/QZP7F2566445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de2710beefc206e128f832c4fbc675860131a056141d84cab689d1ed62e14f1. 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/QZP7F2558998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e38471b9a7773f4b6955704cc0bd653245767990340953043bc89d017700048. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZP7F2559000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8315339763d639e7c6820ae1128da9206f8a3d6cbd4c69f1f98a6b04365acb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZP7F2559003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca65efd2e18cb53df5e181513f09da223139a5a30752e05b0e915f5140fde600. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZP7F2559005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706bdab6dedbb6a974e6b6e76fdaf83a5c0cc81632a0b4b985f62d3f896ae611. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CA5KR2412125.
Merengue & Bachata Traditional Dance Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc494e6916edb29b0c1c4db7d8bd3ea33f24dab2a9dcee08b78aeed8c4795003. 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/QMVRR1204121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0180c14a0576946b904dbedea695f701738d13a3026a9a8e2b8383270dc352fd. 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/US2BR0000544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5780156de597ff92a8b7abecbf7c6a7a9eb44df6147e3244942c5ab26c30c4e1. 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/US2BR0000545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bc840c1ea32b29e3fb90d5efc2759b55197a69bd7f13f327d3fc80d32c4d97. 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/US2BR0000548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa82c038abed6bf0392055a9a407af2a4d79d4730f4f1e7f8ba83499499b63a. 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/US2BR9900537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7a190cc7593e4094431dff3f14847d7ae965f9710cf51c58c1e3d490df3f69. 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/US2BR9800522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5fbcb3bb0bf777b76337ca92c883ffa496163bcb73ba323ad65451ef1afcba. 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/US2BR9800523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e5f0646985e156bb32f5458393bb77068304530aada65b62ee62969e828383. 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/US2BR9800524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634b26830d08842b9bb32f4f3bd42b806a3200fea124806adeb9109cd330c2ca. 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/US2BR9800525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b626ef8342eea5eb06410164049645c7cc409bae3a5738729304ab4670e49b. 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/US2BR9800526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1238f773a3e23af637af5c7f913924b290658e2d36b883b0bf9b8e3308379866. 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/US2BR9800527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd21afa2586164e11890193c12e629be767c383d45ee05ff608a6fb40c3b9b30. 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/US2BR9800528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3e9b0aad1a0e8bccfbd88c4170deab12ff7e468421279a7d4deca4a30a3b8a. 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/US2BR9800529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ac25403f0527bd896a4f2c4b599dfa52c9f412dd7d99ca15c53e998ea6192e. 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/US2BR9700514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd208179a616dbf3d03ea737446dd502922261b9e749c90b593155ec724657a76. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:41:06Z), 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/US2BR9700515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66eb610f0c4bdc7fd5cbfbd8d37f35c218433b01b0964dba9aeff6936633eeb8. 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/MXUM71601280.