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 0x42adce47a89603652ab211132c96609357d74c4a1d398b3c598a66bd492ae5c8. 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/29d01591-7a53-4376-b58f-c7bc88d221ba.json and https://artists.proofprofile.net/proofs/artist/29d01591-7a53-4376-b58f-c7bc88d221ba.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 0x9e0620b7e3510bc1a809b47038e490dd53561cbd528fd25d6959d30275b9ae91. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXI321700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2922979b2071436638a968e0069bf00eff1de959a6bbb4a7ff1f983194efc6. 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/BXAAU2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4665f7fa6875f4c9f03bd7b335b80a385a5fc038c22194645cd372db508cdabd. 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/BR4W41200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02a4ea62d8150a9e94793950add55a8e453f6ed8e4c6f431781472b91073a5b. 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/BXSNT1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88726f28958df5a9933b19ef999b1ba0d4abe3063fa083300be9cf10a6a7fca. 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/BXSNT1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3ceb5f485461fddeea0cd6f830b25ae33356b2e4443710eb198fc9a80adc32. 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/BXSNT1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1115a575a8c7c9fa459f01c10a61dd0fbb212d96fd8edb658ef181a84b2f1e7b. 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/BXSNT1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bc53e53b3daf448cc44e6627cece3aca28fe771e8719a048b064cd46181d15. 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/BXSNT1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64a19223f21dedd899b15188054724b951df4ae1f85f556f278eb820ae84d15. 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/BXSNT1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779dfac39bd7d0251dafdf86beefbfcb015dc2699108df5ebe7d9de3ec8d5b07. 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/BXSNT1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b0c64534a4a0cd92995abaf0a387412d0206cdf1c7d89dc278971bdea0ec11. 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/BXSNT1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa879b78539ed416f43e62aac25c4a999c4c357e80a01be9f21897d64ea69b005. 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/BXSNT1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d857044615fb773fd937c6fb34b1d7ccb0ec3de11dd1ae7c3735f83bfece34f. 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/BXSNT1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb11d5321a0aceb6b86362fa28a03efe557439dddde3e15663db154145f14a07. 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/BX5NY2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d537536cbe17afc2ba03326e341ae6febcb695ec56120adc2fe79d97781c5b. 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/BX5NY2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3e9ab977db76cc2f99a1dccc87046bd975dfbe5499ae5db6025460c604c961. 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/BX5NY2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc0531cd544e225a2c89adfea7bbab6c8ec43b1c91397adab3e4c9e562e37e6. 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/BX5NY2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dae10e6f9e5d99fd35f02581f75371f828f66707ae71cfb2b5a92c42ad90b0. 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/BX5NY2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81f71f9be5f13329d65be033440a0830b055dab449185255ce223404dc3da38. 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/BX5NY2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6d4af30ed292516ff7ad7c62436ab45e05291712037b7978dbeb7c557fcb2b. 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/BX5NY2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c2c7deefb3795cf593a841d8197f514781c40ade68ade169f3db1ddf409cde. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BX5NY2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dae10e6f9e5d99fd35f02581f75371f828f66707ae71cfb2b5a92c42ad90b0. 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/BX5NY2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef6d5b3c99a7dda8863fa9141301c768b685430a826d1288e4e72ded2f1d5ff. 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/BX3EZ1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65024c6282dc672fcbf787ce4c974b4b17e1ab94160273589124f5a10bf21148. 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/BX3EZ1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0f5889755f9aab710ad396a2514f19fa8a8bfb00ac2c19c4047ab0656ae00f. 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/BX3EZ1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3785ee5dc420424b185ac0cbd058b0b17e3716727db402a60f55e899400391c0. 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/BX3EZ1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b692c6fafc3ddbebfe9dd953ec47107ca04967a2077e3fae207e7ec0eede4b8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BX3EZ1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3e9ab977db76cc2f99a1dccc87046bd975dfbe5499ae5db6025460c604c961. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BX5NY2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d537536cbe17afc2ba03326e341ae6febcb695ec56120adc2fe79d97781c5b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BX5NY2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb11d5321a0aceb6b86362fa28a03efe557439dddde3e15663db154145f14a07. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/BX5NY2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef6d5b3c99a7dda8863fa9141301c768b685430a826d1288e4e72ded2f1d5ff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BX3EZ1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0f5889755f9aab710ad396a2514f19fa8a8bfb00ac2c19c4047ab0656ae00f. 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/BX3EZ1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34895b7920b75cc737696118bfa2320f4f53a150d4a5f04a1a1b3cdfe9967011. 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/BXBAZ1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb951ed8c0f9328f22f574cf7c1cf070aed34b064966e670d5fd98a61cca12984. 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/BXBAZ1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1906aacd751722ea321d836a0ab9e6a82dd957836d34c13c48690e754d69fe39. 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/BXBAZ1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236b0b5aca5f66f411611d1f00a49fc091e6c41806e9f9cb7e024d18d4ba2c20. 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/BXRRQ2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8b92a1f3e2ea9e85892777f30cfa2e2065e8d8d7000735dc42292eb2406c9f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXRRQ2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fdb5fa288050063c9bd5d57cbb3af6af526073adb22d2df4e61ec378060d69. 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/BCNY62400001.