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 0x42b28d8d445b8462a9938f5e248312f092da528e4a41ceb4b713227b39218e0a. 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/f1e08f61-9640-45f6-9668-ecac6b2f39d0.json and https://artists.proofprofile.net/proofs/artist/f1e08f61-9640-45f6-9668-ecac6b2f39d0.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 0x398be64d73642ad7ceceac8bbd526b52b74ef573b7b9ffdd17c0bb64a4dd8b5f. 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/BX3GP2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cb1ed13ef0e69bf35d6089e0e41efe4d050c300b39f7b99a841e2b9bd86344. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BX3GP2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7e262f3b657bcd56dcdeac5dc9f73c2246a049a76b0ac402bc40b2fb0db672. 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/BX3GP2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ac19dff08fe023a88f3cc49dd0fea5c612ca7419d2a56ae63169737a93b1f4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BX3GP2200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745cb06d35dcbbab156a5d9e3e03174fa2627ebf65a13ed0e4ba236c64181fec. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/BX3GP2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ca24ca10e6eb4d0369ed5bc142f0ffec905e9ad0340f0d9e55537e0c8e89c1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/BX3GP2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3a411caa2c7917babe280d81ea25b424747c6e39fee0b972d61121ef26ff2d. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/BX3GP2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877f9c66e0a95640230e8cedc85f316c25f0c1e793d5447ac925db1728a9ea1d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BX3GP2200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae18c6a80e5d216abee6fbf81b4d09914d3b4842cda8cac9106854934dc4ac3. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/BX3GP2200044.
Louvor Acústico, Vol. 2: Grandes Sucessos da Música Católica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63756f825fc083005487c72dffc85260d0a597194899e3397a84cae5207aab3. 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/BX3GP2200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6daa45334050cc9d9bb01193fc11e26a5a1d9e1ce886f7bdcdc0fe97bbb582. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/BX3GP2200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61362b7bcf72638290ad1b2070b57bcae9a35284df313ada57ad0269d3012f68. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/BX3GP2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072e391a074063b8730568146480f4cc6819c181b1f70ae1fbae77c9d4586d68. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BX3GP2200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1af099cc006b125e826561e266bbaf775c1cf85f2f7818a6fc26b8321f19bf. 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/BX3GP2200055.
Louvor Acústico, Vol. 2 (Grandes Sucessos da Música Católica)
Louvor Acústico, Vol. 3A: Grandes Sucessos da Música Católica
Louvor Acústico, Vol. 3: Grandes Sucessos da Música Católica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa75dc6dd60e894307978d4ef51a59f39138f82108b3a7095f3564718302a3d. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/BX3GP2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9f0dc23b5b165011c12baf08627b2a6966fb0a567f10518f91029be5d90861. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BX3GP2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2892ab92e78e893719990d9b7b3736a5100daab805399b60bf3ffbdc3cb0800. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BX3GP2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21b7cca61eee7cf99d7a9b5563719ca3281d8972c2720a99eecb9bf2043556b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/BX3GP2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70ab3533f484a36bfe1417448d55101305c1e978b660e7205882b5796b2d6eb. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/BX3GP2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5d009ec656f49fb546a6464fc99adeb76dfd9e8fee0629769a929aff93b0b3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BX3GP2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b90a3d62d190565169c243ff4b6f7c6f8388fc9be71dec628c35ba63b250c8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BX3GP2200023.