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 0xb12f4d27e030d80a05be1e14245f3c85a68016453f332c8154eb493069c0dce2. 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/dfaadcdd-fa74-47f8-b3c0-9b4ff7a4e1c9.json and https://artists.proofprofile.net/proofs/artist/dfaadcdd-fa74-47f8-b3c0-9b4ff7a4e1c9.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 0x6bd03f49b7e45464eded16d1b7f8a4825c8fee92373f64959f123393f134aad9. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/US4R30725484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc7c7991900d5771074c19b3ddf8f76165e10a945160ad1709bf52b219c533a. 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/US4R30725490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb43b8de8789df3211c5599f027e0d62f0fe2ace5f1538fb39d7121a485d2310. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US4R30725500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9b7bc3d4f4aa9c87f80f9bee36bb7243af4986a152e845e21d74803f67983a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/US4R30725375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95200b5ad1257f7e1092b4af68e25dd707c199a8a58dda783a84caf62ea6e05. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US4R30725457.
The Complete Jazz Party CD "Cocktail II"
The Complete Christmas Cocktail Party CD
The Complete Jazz Party CD "Cocktail Ii"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993b320c091946802eca14dc57225c785e8188b52b06e92f88f59de7a002707a. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/US4R30725995.
Who Wants to Be a Millionaire? (Next Question)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d039802ac0fb7c490b8b89bd03ef63f32650451b8c96e2ec773f0dfdf50cd0. 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/US4R30726064.
The Complete Dinner Music Party CD - Volume 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261b873c8736f5c5bc1d31ba8a758b4f7a9aca79a6811cc41c5eb6bc12aea9ef. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US4R30726072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d16f5ce136f80a943c49c92744bf58e158d2428db870affe658fd349b44c03. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US4R30726077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd0b553c6c6c9abedfb19114ebf5ea09c1da5c30ccd0eeebf6ada6212dcdc50. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/US4R30726080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ae695fe98de815cf11ac9e86a15a850f32c8b9773654ec0b2281ba617d839c. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/US4R30726108.
The Complete Tv Themes Vol. 4 Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad6131d811d5b40c2a6bc9a45e10ff485695e623b57f40074676f78aa1558ee. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/US4R31008813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddf1b3cc5e82b4b23a8c62400829671de1df7dd18cea6f3d58b0352469ca4cc. 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/US4R31008814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a23be11a2a6daa195f1192566fad5488c1427defa799afb73f78f7f2038b32. 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/US4R31008830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00721ab9bee65b77a7c2e9d0423efeeaf99f1619d89462df5041eb0ef647c0f5. 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/US4R31008831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe83a117f6d1e13130225f235de5dc9d03bd6bd3bfbcac4e8e4e0542269e2bc. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/US4R31008834.
The Complete TV Themes Vol. 4 Instrumental
The Complete Grand Entrance Volume 2 Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332dba63ff5e45e564e6c09ba48b56ee31b5258749256ced54f4f443eb43bde7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/US4R31137987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8e962742af9ace781cdaa821d14a8c1f8cc4672b20aed59484dd2e9e6ac111. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/US4R31137995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3badc75442281d164ef75b58ed90fe865a71eea17c2d0f89f5d6b51e1b3d3d. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/US4R31137999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12315aa8e8c82f764371445b7ec30f64cca349b12699c6c8b3dea0618f784e04. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/US4R31138001.