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 0x8664b178fca3cd195ec6d9945946cf8b6e1b8f6da50c4b8381b25618c7aa2379. 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/849c499d-5f7b-449c-b80d-d324d89ad3f5.json and https://artists.proofprofile.net/proofs/artist/849c499d-5f7b-449c-b80d-d324d89ad3f5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Masquerade (Still in Space) [Instrumental]
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 0xebb9085b336a0b578adb8a89bb5f0200cfd62e90fee644e2aec94ba66d8ec4a3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZ4JJ1686202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cca51f47409a77dc94f4abddba1588fae1acb1c52ceda634c3b8b03a1f638c1. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:20:33Z), 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/QZ4JJ1686203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3cf71d819544a0d1db5ccbc8b48ad13e09111f37efdb17f535c539e32aafa2. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:02:56Z), 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/QZ4JJ1686204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394870542895fe6f685998446f0c69bc39eab7cd1b107b43a72a13d9ca27eeff. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:26:12Z), 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/QZ4JJ1686205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd4231830fa5dbc2e18e0b594565e5343f2211fb785049f60afedb698bc6aed. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZ4JJ1686206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744aa56b27e3abdf80971b35ff211aac2e93a18e360ce0d5eb3963e526aafa68. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZ4JJ1686210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388ee09fcf8411d914bdae72f9715a7fa0b55ecb7e0086f466cd626097a7aafb. 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/QZ4JJ1686211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c5fc8370aefe92d6a598d214129509ff16d5bdc85282d0fb79c27548f2743d. 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/QMPKX1737938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d1c476ae96c7d2ea5edf6f94943c7e39a2bbfb1651d2749c6aa5041a4941df. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:59:27Z), 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/QZ9Y21756548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3644a94400f507048a5ede64418c912ea8b13b584fac2cc68786cdf2c6a053a3. 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/QZB4J1880902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1593879ee2ada380fa135770b9aa1206ef9deb6b85ac4002d63b0c63eef40d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZES51812293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6f5d2cad78b90400421e97333db761d8da88ef94f9b7e5acd2044f05a8b35b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFYW1978833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb721ca850e60055689fd67ebf3d9489462124924669b482eb672b5738e24ffa4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZFYW1978836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6058eea56174b92cd8495e5eb77e3cca706198db483bcad6153a7cf225daee9. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:40:54Z), 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/QZFYW1978837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2573878ed5ee87f473de7fd310da5767383daf3301464ff7cf79e36b1007aa. 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/QZFYW1978839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d53fd0d043d338e271410ba96c734cd07a40dd3b8891da2fb473d35f7fcc85. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFYW1978840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a04d8629b7ae5b3abb29c696aa6544d808bfacd5a122de041280ec4acca4529. 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/QZFYW1978842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc831c33d805eb513b88ad6e4cc51ef776911246f7c2bdb16a98f34a4e85bd82d. 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/QZFYW1978843.