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 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 0xe8e06ce1496ee1e8823aefbea0c5e1cb64129c6c528f52e6090dcc7662b26f48. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa2de916-9717-4ab1-8239-952190ea2317.json and https://artists.proofprofile.net/proofs/artist/fa2de916-9717-4ab1-8239-952190ea2317.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kid Cosmic and the Sonic Courage (Music from the Netflix Original Series)
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 0x4774c09997676fe6a621a73488a59adcf33421076cceddb676cceb72bb0afb5a. 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/QZ8BZ2001071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4ec43ef2453ebcea98caa8f6f229c3aacc80ebc6663b7c8bdf6b0c7f910cb8. 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/QZ8BZ2001072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1ccc76ee869d95dde25aaeea1cade085461ab08454207a39d95d6f375f1f97. 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/QZ8BZ2001073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf712a3bb1c46f21353fc69cd5a8d2b5d39c98c7acf12a05a10cf0fcac3301ba3. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZ8BZ2001074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba70a6e17a6e3a2fda7f3ae3dd3e4156e24ff2ecda49b509f82f09a848998fe6. 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/QZ8BZ2001075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb2a28b7d2f1c69713efd8f274bb7319512cb5bbbfed6b86d3a3699a40a91e6. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZ8BZ2001076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe609936935616d75a2fe6a4ff8b8523b92fda41ad76005bdd31364c999b5cdb0. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZ8BZ2001077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6780affd704f543290936732d6fbef2d3cb30226d8939065328db223f12a251. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZ8BZ2001079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2857a4beb257464b6f67d63200024da90cb3739f3b3ac83224ba6cacaa49f0. 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/QZ8BZ2001080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bebcc1e7952a5da45795f20bf4f6f899e6eac5545f20588cac6a4e182f1176e. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZ8BZ2001081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e53631270bcce27efe3d33f1d906b0d24dff620c4aab266cdf46dbf9e6796e. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZ8BZ2001082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa552d10d57a7c54d4ce9cc1d2d0c8e85f75a33db962c1203b053cf062f744c38. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZ8BZ2001083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f00953cca00e31508b381eb6a23a3df8e13d4a24e0c8445983d166a9bf662a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZ8BZ2001084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf950cb39b739d210c81911b8794f6ad5c93aa868abda6f797a1fac571a62d846. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZ8BZ2001086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b039b6af00999ba3cbf776ab590dd5fab583b5e9876f3bd10e3ac0ee73bdcf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZ8BZ2001087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8553ac0de2619e3cb82be151c9fdd24ffeff47166a47ef2dce08a775af2fb864. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZ8BZ2001088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e8d9e404e55bd2eac10d288898840e8682e57ec69f7f8fbeac552751666349. 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/QZ8BZ2001089.