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 0xc388837beb1eb5d3acf65d9b5d3629e6a971efaf5cdfc7c8ba430bf548e625fc. 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/691fec96-3006-492f-b626-e1683bd67f28.json and https://artists.proofprofile.net/proofs/artist/691fec96-3006-492f-b626-e1683bd67f28.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 0x2bc0703fc5c35e27dfd49091f1fb0df5fa15439cf02f04fb2b9efb5e57c75d3f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:48:40Z), 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/IDA141900531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fa472a7257579cf702fb3de9af53bb20f5873216ff29ee284684dd726b2eaf. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/IDA141900532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb72726b859ac621a098c00b9d7605193ba46a8d72afe1d6ccd2fe2c6b1fb3e7. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/IDA141900535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83c62d3ff5bd47983716dc13780972f0456bdfe89a5aecf236d40f7a17c82eb. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/IDA141900536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728d340746d94ac72396af923f638b863bb2043a1e5a4d7f511faa61f49b3e7e. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/IDA141900537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574c57b4a441180e58b963283096bf4d3a747ba53ea9bd439c263d890285f4f5. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/IDA141900538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cae6acd67a0a0287b69aada626a627ac7f83c3b6cdeac956ef330b483b1140. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/IDA141900539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849750473b21e42d47caa2cd56218326a7aae9dca9a28207544db8b6e3e2cf99. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:12Z), 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/IDA141900540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa7548fe59931e37bd670b24669874d7482297ea9d3236caeba7226221946b4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:36:00Z), 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/IDA141900541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca647a5e492154f2e9e154382bb956be00db1b6bdc70f062783b796ea8fc9d0d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:08:43Z), 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/IDA141900542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5cabecde648a691959061d868fa999267c49903dd85f142f65f0899836b467. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/IDA141701662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400f65fedf2cb180749690aee76c67595dd4a544cec6cab6f13c15b8133298f2. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:37:39Z), 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/IDA141701666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbac56c8e60934f35f98cc323df336970c95be06c2afa09806db8ccd278f930f. 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/IDA141701668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7532e8bfd7247462ed9cf59254de534471259efe20118182f95bcf32ba5af25e. 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/IDA141701669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c75cdfcb98ff3385d54d15397f143ee89b2469de180107a6e6e29886157fa87. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/IDA141701670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04e0be4ff7c7e205c92bcb76f3e1dea6b0ace233d97143073cece10422b8d77. 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/IDA141701672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5109a6f1687ef762d6148d3f6a497af58fe562efcf4e80d784e79195ae500ef. 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/IDA141701686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c7743c8f911c01b1bba12aa3adee619ceac6eab3efc42afff2949af829f736. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/IDA141701691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e8c5c87e4f94d1570ce5b889cc9cc01130b4a0847eee9545aee6dab6915a1e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:21Z), 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/IDA141701693.