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 0x47ad5329caedfddb110287fa0850f2a64afeed0f04a8f013015d9e5e4c8577ee. 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/f6e08195-7a3a-48ad-aef1-7eaf3fefee7e.json and https://artists.proofprofile.net/proofs/artist/f6e08195-7a3a-48ad-aef1-7eaf3fefee7e.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 0x5239faa2edc9b064b7bd03c0ce10d175be5ce464075186c03ed7660450cf3454. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBKPL2089421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f908d8808cafe7fefa7f5c7029f5850a2661abd12157a8c455784a31e12147. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:29:20Z), 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/GBKPL2027339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cecb27f6e096fe0314239b5f09d9d3734250595d292191ea1f8d55b8c23ec8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:52:20Z), 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/GBKPL2153632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32774943007fb0c9eb412fb4cc5a5c9ccf8d1fd53f1df494abce621a914f9fe. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/NLF712306537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674e8e7aeb68b355b32e93eb82dd47a5cfa2dfb42d951ecfe0b5a9b39dda151d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:56:28Z), 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/NLF712306536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361b95eb712f2a0bee098af5d6cd77565b11f8b61ad348d04feafe974e847425. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM72404792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636a27f4268666d942eda21f5a5b74c85d68ae1a02b409d9cf79536fe733a508. 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/NLRD52350473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4ab59e1f140c9020a5617c13df1c316050d726f12037f5feaec9de8e0eefa4. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/NL3M12406601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0e93bfd1cd8be649681aa1f34659ed918fe3bcb43ae5982fa7f0f8dde36c05. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NL3M12406623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4ab59e1f140c9020a5617c13df1c316050d726f12037f5feaec9de8e0eefa4. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/NL3M12406601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec419ada45e5db831d36c4a8bf9c34da5e2b46b1e038ae5c8f600177ee655bfb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USWL12401336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361b95eb712f2a0bee098af5d6cd77565b11f8b61ad348d04feafe974e847425. 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/USUM72404792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2ee642d727f2e9291ed01dfedb3f7385e4293cfc8374e46419721f3a2440dc. 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/SEUM72300767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9268364b74c9a4f86f94ed62cf42f6edd3ba9e8d2ca67651c24a475e81dae86d. 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/NLT2H2200722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54adc27ec00badd92322b0a2bf9aeae6094f890fa79125caa7459f21bf09da06. 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/GBKPL2029462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de7c0242d743cd36bbdfdc23f521c6776ff2fbad07d1084772ca6e05b363ff2. 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/QZANL1745381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361b95eb712f2a0bee098af5d6cd77565b11f8b61ad348d04feafe974e847425. 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/USUM72404792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec67b66f324a454946beafd753a7461994f5197a227db79326930bd3c3d334dc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLT2H2200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcc7b3807d253de307d25f445140616d533fe96775feae88b62ab0177f598bc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLZ542400599.