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 0xf9f99cada5fba75244ac07f54a6f10321bde4ffc86ee434cd8ac9f42d5f32747. 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/d92b54e1-79fb-4056-9f7e-066c96128b27.json and https://artists.proofprofile.net/proofs/artist/d92b54e1-79fb-4056-9f7e-066c96128b27.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 0x4f5afd72450c79d99ec331662e66517c1b3f31cd5ddc151737060e0528a0bafa. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBLFP2348290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8469f7f597794286ecf4a94778a661de1169e362142bd9da332dec0707ad6e. 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/GBLFP2348292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d5de529b2f81cc9cbe91c3900a17a22242f1e0ae06d3d9747b0f99ee084206. 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/GBLFP2348291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d54b97fac802abf3a9a0b72104f59449dc8faebd48aa4530b1276e0feb21a3. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GBLFP2348307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0469ab0504f876a0e8e0bcc724ba2c1ed5f00fd6cf3219355fc2972adbec6a9b. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:00:46Z), 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/GBLFP2348308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69317f06432f2efe6da245ede8f5158e5842dcfdde5e8280186478aa34d1167. 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/GBLFP2348309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac69062a8d3635b71ebcec19d3d0c5a5a6c93d23e15a3befa619965d8743401c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:23:08Z), 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/GBLFP2348293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bdf3bb2e0c200e368a114b100588e582a36a6688dcc744c741919aac9e7047. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBLFP2348310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757d1bc05e0564c611a372a8d1094b83fc842abd8aedd893100099b52819127d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBLFP2350591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b63340b151ff10c61ad29b20b107a7e5b2fa3f209300967b93bcc040ca852b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBLFP2350589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfdffb5a48173bca3c5d2f2bdc6cae2cad5b3389ddd640d7f5d53580602c055. 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/GBLFP2350590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76055ce66b92c24404b92641ff32b7f5d3ba431c351588a1f4233fdde1c7743. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBLFP2350622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70eeafc8f132fe7f6c4453017d4a7dfd98a5b0d13cec8f35f0fe35581a198235. 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/GBLFP2350603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec5e135365b041a3ac66c0ebafda185d97bf73431db4e29e1d479dd5f0684f2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLFP2350620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf50353a1b9fa4c35993856e3c3d40cca218d0e463f6ee5cdcd3e4171c80e940. 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/GBLFP2350623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1e78f39a41a9fd6d600dd9631facf66e34d102121a7fec25ecf880e600032d. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:48:47Z), 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/GBLFP2351781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d85ff8253218d06cfd9a214a1136c35a0b8c43f4b342f66a692ae0efd8ccee8. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:22:17Z), 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/GBLFP2351779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57d2aea1c3e72ee6f7ac4778e44e155c37440132126461e0089bf70f97a8be6. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GBLFP2351780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4cc4a030e6c067f580b95312809f61c4b581721b025767219ebc24490482f7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:54:54Z), 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/GBLFP2351795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9ef37b0a9c2f37f4f84e8c6930bf02bc17404f0e0b60e06797f09d9335d017. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:08:00Z), 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/GBLFP2351782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27075eba3f658307ed0ef20ae059e9e3808357a33bf2864de0408bd5d5e4f96b. 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/GBLFP2351798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd0bdce037a1d8849ca673b076fb4810f3f955bdba9a086d38cfa8730796f7b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:47:10Z), 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/GBLFP2351796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c9c07a73d25890fa5bda172c1f4e783b73f4463603d3622c94fd9820dda072. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:26Z), 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/GBLFP2351797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdde17f9c38d822a28b74682e8b718cabc99ab1f47ae7725e4ac8600e0a2c2db. 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/GBLFP2351799.