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 0xf83c85ea3099ca53bd0a344d0c19a163dafb8abec2f8c18a083a9da9bbd79ca4. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3208a781-28ca-4dc1-88fa-b9ab684452f5.json and https://artists.proofprofile.net/proofs/artist/3208a781-28ca-4dc1-88fa-b9ab684452f5.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 0x2ff4d169dc25f4917efb5b4799930a0e0ee8fe63599a0bf772d4e8643dd7cb07. 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/TWCC32311475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4842038829a3dca6b806aa7248527624b69e59d82f0192dadfe9ea805498a8ff. 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/TWCC32311476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dfca1bdb9d86ec7d98e5917119657c57926f417476c555fde7d65df1970fb1. 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/TWCC32311479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249818ead8b2edc969e8fcd977183f92be73de3af5fab5567d74e837eef083fb. 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/TWCC32311481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5137274b4fb4237e51fa9021c8382ae85174d0dc37e68605a8c615cd2f835ecd. 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/TWCC32311482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d3e980edef1b27639ea01ff4a708528a21fe48756a0c723e34c853846270b8. 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/TWCC32311483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82eb73f0d99f2f935de754f52b0d3cf1b9f73ecb356a56f54b420810a635eba8. 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/TWCC32311485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359021527da7682df8dad26066f85b10e18411acbee59ba18363449901861f93. 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/TWCC32311486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a374afa9ea2808312c68c0e236240e28a0ad67771fee789255a5753f4d58ca. 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/TWCC32311087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ce7faf71b53fc411e1fed2cec4ee2fb08a872fa47ae7473998bf2b1d45e30d. 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/TWCC32311089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4455a9eb7fd0e38dec9dd30b1fb8fed787c4223cbaf86ae3985eed062395b61d. 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/TWCC32311090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f052242bd953346513c69a86088757663d28b4bab961038af81ca0a3be85388. 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/TWCC32311094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d41dd55d3f9af16141460e3346762ec49e0fbf3d286c5ea344deccd9ff8fe92. 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/TWCC32311097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f717173a84c0bb23b90729680d98772de4620660bf5652d1cffc1d5ba9a703. 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/TWCC32311098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30569fe66b7fec49d092a15dbc81555e6b8db73fee1a44cf1d787a21d61cb24f. 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/TWCC32318482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1003cb7cf1b46740085b7422f128f65181e1e63cca72c85dc22d62def1893c55. 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/TWCC32318474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32294f49c52c62022c3e2abfae7478f180f4dbb255db49ba3c4e49838bb89456. 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/TWCC32318477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556ff9a39180cac2c4f732bd4e42136b0c1f142fc6e476b6de176c87a5d355d1. 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/TWCC32318476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b3bc1657fa8dd01d2f7b54c4d3b1e867de712375d020da9daca599045abbdd. 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/TWCC32318478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2608cfb40a7b60270b9f378b4b2d56832d7b641cf5206df87ae643fc5ec51dc. 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/TWCC32318480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4a5932d2d0ff035f1bab4920a6f57b1e89a301df6b98bcf302adc264140b5d. 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/TWCC32318481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3c475c6911ba7486fa129b2069f46818b29016283d52165187438f44ee1233. 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/TWCC32318806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144fe8f1bd6f348537e11a9e8ad3d475978c7113860e2c361bf6d41f014076f3. 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/TWCC32318808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfc0517ecfcea57f1d8d8f2519f5a1cb2dd1e5be32e3bde412f75aa8c15b8d7. 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/TWCC32318810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115b2f918d07bbe879123fb674742d907eb1b3bc70b36b6a619c3ff037b72954. 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/TWCC32318812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b574478d0a9f50bfceb3e627b4cce1d69ad7933e399f8d23cf76b1f7f813e5. 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/TWAE32302953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bb5d532f15ee1e689ab18b2fb3c39c9a4d4f7b4ed12a0258017247f7f7b4c4. 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/TWAE32300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e4e04f12e6bc0a158c44ca32f093025d221d39903c9d8834778b46c85bd3e2. 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/TWU712401416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb46decfcda7469b0b732ed082d67d32116bb8cf38a1000be2a41b3e0002b448. 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/TWAE32301712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d2812cd397fd7979f149135939e90b0c92db45e1d7c217f392cc4e2769b1fc. 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/TWAE32301277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe495bc9c42de0a657dca4a34925e776015bcafa42d908280aea5cad551372d58. 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/TWAE32301276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eedf9ed5b3dfa10477bf517cad0fbeb17bf4572d64da46004dba67a69d8d00. 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/TWJZ32300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5740cda8fa4b87cce99a002d6f415802bca07385e314651f036ff831981140. 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/TWJZ32400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85541863ac3f527f7a6c733ca3d902e95c0bc1f6f3b4f11cb00a026b7e235b8b. 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/TWJZ32400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54567454bfac81d608ebcd92ac6c515958bde6c1c93db8e87842d12bc130e646. 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/QZMEP2535923.