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 0x88b8366287415c3c3a61564c7418914c37ec07a7f630b6b7e6ed47d76fdb782c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/723350c3-0222-40dc-bb73-03a05b684c7c.json and https://artists.proofprofile.net/proofs/artist/723350c3-0222-40dc-bb73-03a05b684c7c.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 0x7728218b4d7009a3189b5cc0890f22ed537facf561a62609608bc6aec1981dae. 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/TCAGP2236551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c97710608bf2fd4912942779d7e8b22cdac77ec584a599d46ccde3a1300c1fa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAGS2350686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fd8e0d3a29fd5da4f96c9c4210ff3f5394b808d7dc88ed205dd53c0287cc0f. 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/TCAGS2375559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1169b93cac13c313cea0cc7e742efddba71c418f72da5c8482c7648e54d5e70e. 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/TCAGT2384231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2961c7b38cb532536015e52daddab9565cd6eaf440375cf6cc666818fa931974. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:37:12Z), 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/TCAHB2317146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde432958ee75c39e43c897022be3e214ad06a46b1b03342a0644aab2797fe2fe. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/TCAHC2343841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0a434e50e4e563a84739c77673fd14db7bc897abbcee061413f20d096ab0d0. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TCAHF2310461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a46ab70815f0bb6df3b143b3144fddc186110ee87d966a6310f62669feef6f. 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/TCAHH2379681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4f9468960e7aa1b8b6aa1e77c03aad0273f4eb9f9ca94a543f535cee5460c3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:50:48Z), 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/TCAHI2363116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6111eb3cbc0341a32039e01331d28e753627a840abe84ee74839b05f0cc10b4. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TCAHL2300926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b1356827bb72ceeedddc6cc7c239f962e7346316d842dd3e099c8d29dbc23c. 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/TCAHL2392824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b76a4d547ee93e9c5ec50ef116fa150f556cb9dc1d4b8e100ac6b691f80c2c3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAHL2392872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60249c0092413d5c52c6a4ccbd43bb31e77979f4d4e5e719fca2726420a4309d. 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/TCAHN2337981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648816f5f1a0a2c0b66d5fb58f5070a0e3d38c01fa7be7e4477a8032994f2f6d. 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/TCAHR2378194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dd64eb289ef69b69fb95fe06cd855bef77e74c69ce7cb8a5a1da5a2209d0d6. 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/TCAHR2383138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaad96b9299e954f58ec2d2416c1e13d51d0e73e90500d9e93e2a3810c52d3ce. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:50:39Z), 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/QZFZ42442456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8174973f8c654b8f40c854a7a3c6fe903b378b20f1c983ca4d2aa436319d50. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:15:14Z), 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/QZK6M2440801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7acd52d78161d10222aaed5d5c2a297286ba974ff8ca53169249a8cf8c7b215. 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/QZK6K2411662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327338ebc06412752deb9e8ef5bc0eda38b37dcca30d80292b3337f3817afc5f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6G2488231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72d5cc02fc41fa6fcfa015bc26161a40712042366160265a4b20b9f3f8cb5b0. 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/QZTBC2411259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a12036d443410b4e8018303a3df1837d1f92a0d7fbfe29c40e520e71f77cfa. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZZ782418864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca5fc226185268318388cf7552a1f2033103b818941c51a81a3a0ced6e7b62e. 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/QZZ7K2494953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1921998224d19b2bdbcedce8e464d7cffb2fbd3cab0422725af2a615bf400588. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZZ7N2481892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e4e2fbb0c7ed47ce1a086b7fcad7b3b2083b511b09cdb33052a5d80092f31e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:37Z), 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/QZZ7X2496760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacfb79530a4357940c23c151c803469686b9fff52ab1a14d7fa5c71053dec51. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:22:34Z), 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/QZFYX2533030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04b498621282ec4e28b15c67efd5b17064e3b398291d3aade3c2e5d1a2dc960. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZFZ42599605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19e8953669bb8080777d9be34389e46e6d1cf31325ebda6020d5c3bbe19cf39. 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/QZDA62516208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c76859520e49979e8715d0f4445f0a3f0a0163202330722c20a216aa476354. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:31:18Z), 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/QZDA62586749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8739096d857027591c19e82537bdefbea9b1d5fda64912a55a924b9f7abf60. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZDA82543339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e9e015cc91818cbeeca7f90185a95fd184055c55842596168cc420557cf164. 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/QZK6N2544366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a7cd6286f190ed92f7cbc3b0e013e2423c72d0c2fac3a9d8b3e1a477ea7e8d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:58:51Z), 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/QZNWQ2518718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473dba96405d43736294f4b98d52f79294be1dc6e71fb23642abc8aba3ed2e09. 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/QZZ7M2567594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7acdc4ec9bf6625692665c05e38d86d623c61fab24e1f33ef14a82e5c68220. 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/QT3FB2565962.