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 0x5681bf3bbda9084ef59880d00ab550ce8683988d9f41a20b54e7ecc45f5cf92c. 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/785c574d-d8dc-4bb3-bf0f-1d6366f87ef3.json and https://artists.proofprofile.net/proofs/artist/785c574d-d8dc-4bb3-bf0f-1d6366f87ef3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hollywood Gypsy (Live from Margate, 2019)
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 0xaaad7cd2e3b7893ac3d8707c4b0f3737693afd2acffefc5ab62189a9cd78c921. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GB5KW1902369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1509b6c540171306b3500bd448aa29ffc5de07a0a95254084c8ce7efb3370e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GB5KW1902112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfe00aa6425035dde3ddc3e9d6d1d1c53c1bd5020783c3d5779fd9249569548. 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/GB5KW1902368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d0659e784ccedc4440bc3c9439ec135e42412aad30863c6dcf9b8a13328ccd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GB5KW2200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b944cc4d3cb5af20eda7bbf9761a137a51796769efb6f0989e59d5634b321d1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GB5KW2200189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3215ff3d75ac90e35954da6f5a8f60c859b3a669b658d8e78943c665398c4237. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWX2209493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92f57bbff63979291dbace3816ba5e252850e4f5bb325d1549f634877d889a1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZEQU2300791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8cf9111c103009bb4d796684487d2d57fac95b5173c0afef5c5fa26ea4781a. 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/QZEQU2400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e487de5f667c390324bc21c0cadb35bf2d568570e051ea3a63455e0fee3a19. 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/QZEQU2401803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1787c7012ec6c1d13ff8d0ec9497ce352367b4a7cc4966b78a6c87eb57fe0d2f. 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/QZEQU2301375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1173d892197c4c4e5a4729be5329cfaee0e7a7610273a78bc62649026c603485. 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/QZEQU2401972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92f57bbff63979291dbace3816ba5e252850e4f5bb325d1549f634877d889a1. 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/QZEQU2300791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e2e758dec8cce510b31282c3195fde8ff115d11a216538651630a56ef85fba. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:42:09Z), 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/QZEQU2401242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a27ee4df20f88337999fc236b679e7a1134744c6b626011a0647975eea3f60. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES82358707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5713965dd0af196cd9934f5ab72164f59fddf2a5e9329f653e8012e2a91e0c2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZEQU2301534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf5cb55cc88371ce0703439242bd312b1827a69148a85b5df3632706b5dd4f2. 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/QZEQU2401240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d580018038dc57720b6090889117ee90b011dead7f62969fa4a664fc80e77b. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/QZEQU2300792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed05b1c544e090f584d58a9aed92ccdf6b7711520dba67b72abcf007599154c1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:31:49Z), 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/QZEQU2401978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd955a142c9536d8ef208b19b17be52151fbae04e588291cf27ba1dfa1912a48a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:45:17Z), 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/QZEQU2500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53707fcabe07fbb5bc933493d6a06d3b432530ad402a9e83e851b27b35622103. 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/QZEQU2500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9b087f4b72423278bed3f7746fbfd5016394a611899e1d6d0448366c54dbc8. 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/NLZ542100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609d7bd0bfc6cc714ea3a58d2d37c57b6d61b75df36e3770f54c2cff61f5ce19. 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/QZDA62232501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7ba3a0a8ba3ab7f5bced8549c779cd4281146cf56c191091a3833da93767b2. 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/US4AB2300009.