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 0x59010f16bf31956b556668b3404459b67edc78f17093695960750913884046f7. 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/3f088b36-7d16-4a95-81ee-6bfae10dc728.json and https://artists.proofprofile.net/proofs/artist/3f088b36-7d16-4a95-81ee-6bfae10dc728.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 0x5f1f1e6c58e57938caf7ba5d0632f9bf3f3d8879192cae95942d4d735f4ea580. 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/DEKB71631842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44abefc11b9b68c27c175611b3b429968e86b70bcd32cde630911296696d2e09. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:08:48Z), 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/DEKB71631843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e67ecfe7ed7b37c16ac7e13d680ddb710e36101f04e6efe585f759371c37264. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEKB71631879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73da87029b5961571bc0e36ced1ee337a6f13b5aabf7a1c482b98dca211331e5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEKB71631880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf630ed6e0c7c6ad6f1348a47d172c13656451fcb98b0f50e99acea307feb5a6a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEKB71631894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a472566f180d9bb6ffa477e164040aec6e638e1c1c4b9c620331869d195505. 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/DEKB71632138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc858b10ab68449da33920e6d116f0cafe051b9343f370ad91e98104ec530c4fd. 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/DEKB71633484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8ccdfe1f11c07ea7110ca59960865533ff833586bf1d668aec406bd0e723d4. 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/DEKB71633020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd767dd3a6bb1df5844b74b175735d80bd9b641bb04683a89ca64aac7c7b6d83d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEKB71640263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2310ef943faf0f0593652a4b0d01551e5100ca9f3d8df5aceb2add41393ed5e. 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/DEKB72059748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a7a6d0cd26ae9db8529e93e62f112d14e9aff8f75262df0af4485308653884. 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/DEKB72060316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65512b26d0384e19ee182d004116b65bd9116b91d5b1d1dd4a0d761601a23835. 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/DEKB72063143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261b7f168155ee260443c53b384abfc5b81d31f6d47d1a67b2769609b3ffccd1. 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/DEKB72078329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362b3277644dc484c5fab96c41f84a7b1006da4a96d7d371fee1ee9cf88392b9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEKB72060310.
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 0xc8753d12e46e1278ebba7816b7c57b6a065c69ddfe49b52d606e5ddbfdfdd5fa. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEKB72078366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416f7509bcccd2b9d942caaf108cb2fabdcfac3bd182c3823bb823b372a6e57b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEKB72093804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeebde6bb2d293cc8029eba200b9168749a4e1baf17216f5b9616f01f4ceb69c. 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/DEKB72545657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2d6a073ba68faf4509111dd676004097d89840ae3e1f775cc629f365ec061f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEKB72545654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d64a7ad7a3299046b3965b9ba544b954c69c400e87f3182db92f71c5b1db38. 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/DEPL91754035.
Hale Bopp - Bsb's Stella Polaris Remix [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e6ef99c51c03bebefe7e216e88830026b1a969ea5a17fcc8bf9661c6a51f43. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES8742114101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b1cd71bc4a65bca121fc3b475caa660407ebd89811a98a60ff7be30e16c7a3. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEKB72057106.