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 0x709290652c4cc6a953bfb9a37d2a888f859024e6fe242c48ee1fed114a695195. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c943b11f-8a78-4a7a-a6f3-028304ffe150.json and https://artists.proofprofile.net/proofs/artist/c943b11f-8a78-4a7a-a6f3-028304ffe150.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 0x406c366a813a89ffad21efad4dc294a077d0baef3bd7c8780207b2855bfb5650. 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/BX1292400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df29738eb070e91e60974b24b2c89b8455da8cbff227ea50ccb20f494b88d7d. 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/BC2VL2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc45e123048b8d8e7a7e042d289d463eb3e6120849511bbc5a891ce53410507. 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/US3DF2124477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce974d81c3b1e373c1e6d961dcef1020c1028318cb38bebc2ff529c599e2cf4. 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/BC2VL2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e5ed7a311f8029235f592fda2c9cc791f6b009465dddcca0e584c9ec57bcac. 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/BC2VL2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3014f9d8eff6c442d2f922943d50bab0524866e416eef2b3b425ed2b5c49f55f. 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/BC2VL2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48fb8abdaf9889f5252b39f2052971e51bdd82f9e08bf2e890f2180244662bf. 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/US3DF2144069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9876253cef31c30edbea5965686271e4e59ba37b531802e464692ebcdcad3a59. 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/US3DF2169409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fd2745111133ee94c3bcfbb713b3ffa90bba1b0a27de080d36197cbc202c97. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BKLFO2300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa553d69eb17ee737dda2a962c6f7aec4dac45b272d3e4f767855436fd4c7f61f. 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/BKTNP2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5302f695ec9115144c8236666e588fdeed1c4f8790ff71a3cc9f616910c1f30b. 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/BKTNP2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983cab2c29c6e1866435d3c15af48cdfbeab7af6f005cdcf8f0d23e62dfc3cbf. 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/BC2VL2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a85d86cf9cd725402543612b816f9aedfe9f39b065c9d8d715ec62b251b09d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BKLFO2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cb16179cd786eea37f4795f5d1ef48b1bee8bf0078173d22876ef42424ac5d. 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/BC2VL2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a710096f93c69669a6d0c0d8b1e1706dda97f94e7fd28f30762808b8e080443. 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/USANG2291651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9bbd0892a6688fa78f5080364eeb52d1829db190feb775405c180ff6fb4394. 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/BKLFO2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d81f50620d90b0c435fe550b21ac2e8d64728a48809947e711697651e9f5838. 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/BC2VL2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be8088c827128aa8461eda8fc6d840ddd7374d69e2e73d7a7a96b44dd9c5a59. 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/BC2VL2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf813bd83639eb0b3459d36d45486232c62d386159fcef9a35405c9f9b4471efe. 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/BXPC12200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b753bf2cdc3350c5bd03782227100d60c13f06ed1ea12277ef6722559f68d45. 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/BXPC12200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11dfcf0ed86f1a8468f289d2fe29d2f845f88ee2765691b49ce4e80cbad81cb0. 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/BXPC12200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f675a0fdf466b149d1efd617a1322ceecbb3b2dc1f011df9fe8c51971f909c. 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/BC2VL2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cd90817afa45ee97f8b275edd3227a6b1390466ca763747b1107056524c09c. 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/BC3D72200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9226f8d0d7ba2590f4ff9f76a5d34cc237b89fe33af0f0bc9858b6a3ca83e2a8. 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/BC2VL2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e6bb9a333d9a17616e1c03aa233b70fcacd36b25d4ecbde5d51e05f2d538f3. 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/QM3DF2167062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb11f301f6f63375a69532562b7a277c45c46a5ff8365b9bc4407d185cf013b. 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/BC2VL2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850284dce847ca17923ac48c5f545e7ef17ac7477d991570ceb2938bcabf16d7. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:14:34Z), 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/BC2VL2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9876253cef31c30edbea5965686271e4e59ba37b531802e464692ebcdcad3a59. 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/US3DF2169409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48fb8abdaf9889f5252b39f2052971e51bdd82f9e08bf2e890f2180244662bf. 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/US3DF2144069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc45e123048b8d8e7a7e042d289d463eb3e6120849511bbc5a891ce53410507. 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/US3DF2124477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a3f9e702dce30081ba6adba222ed0f76535d576de810381dc8dab97b917de9. 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/USANG2108601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be8088c827128aa8461eda8fc6d840ddd7374d69e2e73d7a7a96b44dd9c5a59. 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/BC2VL2200003.
Chill Brazilian Storm: Bossa Nova Beats 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa553d69eb17ee737dda2a962c6f7aec4dac45b272d3e4f767855436fd4c7f61f. 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/BKTNP2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5302f695ec9115144c8236666e588fdeed1c4f8790ff71a3cc9f616910c1f30b. 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/BKTNP2300017.