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 0x8cfb735e3bb6f33692f323c79d8c88d9bdbba04cbb336d6129a813981eae9fde. 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/7c09ab70-4d8a-4bbd-b47c-f946af1a8997.json and https://artists.proofprofile.net/proofs/artist/7c09ab70-4d8a-4bbd-b47c-f946af1a8997.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Love You: Songs of Love & Blessing From a Mother's Heart
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 0x32a3e40d267ae98dddd3864d1765c1abcef62317877233d672e2afe135d0ddaf. 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/US25L1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd355ae942a9ba03caceb5af49a21cd0d1d0cae470ee9b30b31348042c8ccad9c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US25L1000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1e74950a234f3b91a60d0d6eccb318d67acdaab31d94d2caff92abc3dc15a6. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/US25L1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60ad751c5f0aae40f6d401db3fea7cd43a9fc356de98b72f84de8216af1a55c. 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/US25L1000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9509e3144c16a5437236b3b95f0b363e2c666f97e7557d242e8b128712f1d6b. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/US25L1000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874f219757279e837da179ccb93dc51398eb260bdcc197b46b5ee4c660bb9ba6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US25L1000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c4732af1c35ea6e7b48cec51248221d723ce8cc4f9020946a942e46a333d0f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:56:31Z), 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/US25L1000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dd95186edbb0786f2a946aee380d3ecd180dccd9785efe5dbcc65a12734187. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/US25L1000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c8fa65ac60ca8085e438b481e3b65fcf7baae51137d79975df2dda2534e9ba. 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/US25L1000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf83b5fdef4ede32750891ef87f7ac3d89181373395987c91b272233bcb0de6d. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/US25L1000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbbfac06502aed4370104e6938cb31964a696614d0ab34a6afea60a11d80c8b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:20:33Z), 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/US25L1000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1da4d5c906d5a47f125f8544145f8b08ba87b9b683f5a1db63c512ddad361e8. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/US25L1000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd771a3c4d2d00b0ab49ea4d2b86039d72a7d62859b43eb1cf387e4e26eb916ed. 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/US25L0501290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a59053efad8afbf5e6152914ca7824018bdcf2767827e484ade1e21c78dd160. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US25L1000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda730367f26df3c7158b9b63297307fffbe417f50627871d7210a4ac987f8ba. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US25L1000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1fce3f0f1284ea0c4c6fb06f405e7ef3ac4d1d9e83b9f317ea159113993078. 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/US25L0901394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bf1aa462571246c2b2d99806c547aab0007a030418c25e9bddf4153e1398aa. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US25L0901398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b324845cef089209670d7feeadeb75d4ea3525ab92488c5c282691207ffb13. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/US25L0901400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef763205b6281d14b804827a039bc487211fee94cc0ee7d48aabc1a6d9d2074d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/US25L0901403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4689ef9af7c14274877b49932553729c06f33f14bfcb3f042b9842f47b171b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US25L0901404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5f8353c1f9b7cda1a811e8e537cdc88c8b0d3f1cb66423ecdfe53ececd2f55. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/US25L0901405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3874249370b7eb77ec47ddc986fdce56b6fe9bc34f1e4750881dcf5408314f8. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/US25L0901406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f7e58639c0fe3b1a78fe22ea5b7c8a3f694255a8ce00650665e03842502e59. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US25L0901407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98e6dbbf942e88638e5c136ce2a3082f51d8b548d8dd1f51b5a8f3360209650. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US25L0901408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb924c8d2c47be93cfb18e11d76dec26628ff812131cf6bebf71d63806a479ab7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/US25L0901409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d26a6bfc82bee74dc925247e97fa382f6a83822b62e7a4d3bf4e1ec1e979475. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:41:18Z), 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/US25L0901410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef763205b6281d14b804827a039bc487211fee94cc0ee7d48aabc1a6d9d2074d. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/US25L0901403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3874249370b7eb77ec47ddc986fdce56b6fe9bc34f1e4750881dcf5408314f8. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/US25L0901406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f7e58639c0fe3b1a78fe22ea5b7c8a3f694255a8ce00650665e03842502e59. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/US25L0901407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98e6dbbf942e88638e5c136ce2a3082f51d8b548d8dd1f51b5a8f3360209650. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/US25L0901408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb924c8d2c47be93cfb18e11d76dec26628ff812131cf6bebf71d63806a479ab7. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/US25L0901409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d26a6bfc82bee74dc925247e97fa382f6a83822b62e7a4d3bf4e1ec1e979475. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/US25L0901410.