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 0x2fd2a478aec1766266f457a34ade105f5894aed152b362ec2229b7cc3e90a3c8. 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/2f48a751-803a-45f8-a2f9-dcadaaa85e75.json and https://artists.proofprofile.net/proofs/artist/2f48a751-803a-45f8-a2f9-dcadaaa85e75.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 0xd9ab541d7bebc221b7b4e6c7e7ce1659776cb7df055366edde07231026e8c841. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAII2405482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b111d2a4194af4538764034d079c25ff2084209532026792eabb88ab87800e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAII2405484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f62559bc9095c839dac9c162bdce0988d1765d3b194913d2f48a623e5ee33ec. 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/TCAIH2494195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56016452491b6dfa51e9014fe5a17c0186065d669d31d9b380401e6329c4af3. 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/TCAII2494201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68968c49cbd65cb1182aa51892aff9ff03d4459289b15439ec1651795a334f96. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/TCAIH2494204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75587a2c2914f7aa923362541f75acbda913333db5380dbe22f2566abc275e80. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAIH2494226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdb1de031f97698e1d7cd1d38e9340d0a3a7f2ac4ce72dda3692ec412a19ed0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAII2494228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d12a51450ae9ab7c02eff0ad1ab9d1125e3636edcbe3e9415d995337a3b008f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:56:40Z), 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/TCAII2494231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae538f83f70cfad58562fa0bf6cd8d01a74acd19d5db4742d399a7e3428dc64. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAII2494243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3258d875d8b1185c5c5913b7dbd0fa179125211c4960ce10cb9cf7ee358206b3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAIH2494247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5e301ff0d936e1dbf2b792525f06846c12aa7ea7c2c09f3f3f94f9af6fbfe0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAIH2494251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a1624bf0b8b70f0af0a11f6d49396e7964c21ec8b07e3ed33be85a835e732c. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/TCAII2440158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15492921ad86aae83fb3dc11f9a09993464b00571d48196eb92378e976d21829. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/TCAII2440161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dd2f1cc7319516da132f464b54b5fedb06efb7725bfc36864885e724ed43b8. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/TCAII2440165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889471bf77d7657f0b1c2189f38f42fb6a38348ffb989e685faced29e985a61c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAII2482756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ace9d37e10616d06b530bc422e81731222be3bee1a805f24e3206e2003df095. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAII2482758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9742c344f5e6d4f2e7ffbc697ed28724c10e35f2b0856b557944037649a701. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCAII2482762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be2122e20d4877cba8687139edbb6b413358b412e48483583bb2ed6b665030e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAII2485077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd372ed8b3cf4891c6fb9fb90b0ae689b7683f4bc769da7bcc259d426097447. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAII2485078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47250df341bbaa8f78e1dc30f80334b3b2f8364fef1db62ccde263d47504e25a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAII2485079.