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 0x6bb89f8fc8d0b3848d7f3ffd6a1444c6f1fac5c7ed0b9f20245aa6bc08bba957. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6162374-6117-4871-bf27-6170abb70092.json and https://artists.proofprofile.net/proofs/artist/c6162374-6117-4871-bf27-6170abb70092.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 0x8f8f8da7dc684de5ae62c150b057c2197184a215311421a8fdca80310138662a. 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/QM3LS2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a2d06f9614ffeecdc5815f47190316781b61e322ad78c9d9b58eec0d9699f6. 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/QM3LS2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc96be870871ad05a2bdce517c95f2093f78a9dc9840212cc57989e1d4bd453e. 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/QM3LS2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f98600b65bbdb85d3f7c05d3f636b6cd78267447ed882c6c52ff7dcb98574c. 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/QM3LS2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf7a706218d3355994ab4dd7604e22efcd806ab043b37e95a495d3bbfd5e278. 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/QM3LS2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88efc900bf5804d20b1cf5a223b0f96eeb805f3599cde5547c641ebae7ec71a4. 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/QM3LS2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5da6d7edb98c5b0695dadb4ed585c5b2290c83b88ab23645ae671bb317d01d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM3LS2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73547cf6cb89ced2c4170dc68aef3c54ba29bbf098267205786b4efced8b9a72. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:27:16Z), 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/QM3LS2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09929ef781318488ee252c8ec9f04d6395cae9ba4ab446cb8a3fda590b1111cd. 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/QMZNK1700320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320bd8706b2d27a7d3471535563a75a969abce6ecb12a66f158e9e7b47afe3ac. 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/QMZNK1700323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc976d5905212643bd57a035aa1f2531fe4d40cef1fcf72c6801b7ea977601bbc. 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/QMZNK1700325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d24ec0009877ea4baf9a55adc7cf96c024a24182a9afac32065d9d96138ca4. 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/QMZNK1700327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d68967f6258a37867065174241fea5015ffbf47b3532ee60e929e0325fd8ec. 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/USERN1009264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9013670288fb3fcb113ed95a825fee705d150434ff445b91457331abca22a5. 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/USERN1009266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb13199fd9a6c4613d681a1aafc581785a06b119d71a2fbdd8c85d9e70a86dd. 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/USERN1009267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0653105a3345422c0d25bd33412661309513616a78b5d1dd16755b737bfe183c. 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/USERN1009268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f50961d2378ff07bf6a1471b5a0881acdcf57d8f892d32d368b3217a9af04b. 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/USERN1009270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58f7abbbbcb7a48be22c402443a215fc244ae885bf968e3d91be70217b0897e. 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/USERN1008094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e95eae9bcae18480ac89e3c01eb4ff913c8e5d20452e41ca4ad8bf217be543a. 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/USERN1008099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375e05029a27c117d19c21f473590a878f4e102e09de2ebf3c718018e671f72f. 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/USERN1008103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffc20ee6b7d2f0b28af9eb079bf42a95eeb1d6659d27e39449806ed66d5fa44. 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/USERN1000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4804d1050c99a5658039d92e265d9c44a8d50a31e95c8a19f417e5e768570384. 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/USERN1000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd991660ca2aa4f2e3dfa1127e0bc9df7879675dac2b99fd830ed14b2cc17974. 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/USERN1000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0af1541b5dcb7fa83e2c829cc65171f0b4f4bc1732f1636fbbff33ce26012b. 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/USERN1000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43657e4d51df5306c84d750bea3a34fecd2d4d7fc526c61f2f6cacb87bca7ce3. 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/USERN1000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8f8da7dc684de5ae62c150b057c2197184a215311421a8fdca80310138662a. 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/QM3LS2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f98600b65bbdb85d3f7c05d3f636b6cd78267447ed882c6c52ff7dcb98574c. 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/QM3LS2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4213c70e4cb8f0cc74bb7b2ec4fe86b3842f6a04b896fecb5b131bd5761348cf. 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/QM3LS1900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba1c9e0c8a60762fcb87e4231730b9508ddf1491ef9703f213a39a4bdb98337. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBSJN1300291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608e2d743956e47546b0c9d83f257eb272ad33bdb9d13af7b667a0fb58e7accd. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBSJN1300293.