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 0x586b31340b255363116762d6c02666ed2ffd56b76bc101a78f0bf59cf093903b. 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/eadaedcb-9ff8-4b2a-8086-d721ae0ac9f1.json and https://artists.proofprofile.net/proofs/artist/eadaedcb-9ff8-4b2a-8086-d721ae0ac9f1.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 0x27aa6b7bd462a86e78ec667532cbfcf5d8a2e6e525676505ba7b1bc135734866. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZ8WX2052570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad6f6a754585f5d85abecd8c71633d32967269aace470e4c324c47c84c6e6de. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZ8WX2071514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad1a5df8e454d2bbbd3f48cca1d8dcba714fec958bbc74556855f707ddd9986. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:28:08Z), 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/QZ8WX2086101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c15da9723ae072141d43087a77398b003676bcb6adac3c6666caa944dbbec2. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZ8WX2087909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30bf8d0bd7a969a72eac9264d8dc37a4164acdade8e32f1347e04540172dcbe. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ8WX2202542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25554409955a158077f8dfa331a88aa78d86fa6b7feddc9e222e01009340090e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZ8WX2205782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7583939a7ba6a2232a7753b690aedd18ec1cc77e580693b6f29a40e3d32d4d7. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZ8WX2210081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3b71d708878eba01f8ccd8cc667d6996e67f5cd8d216bf58c4c3c25af4ccd1. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:34:04Z), 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/DEAR42307774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7331768f8a769e06ef7d3eb51f17cb580803b85c35229f572224186978bdf7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEAR42386596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c2ad91f9c9e990045c94a1d79bcfbaf36f524e1c49782510073c38097e717f. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:04:01Z), 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/DEAR42386860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69daabc4040c9c92cb80dfa3a9538a0a68d6c091e1fa5be3008f392b8e147f9c. 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/DEAR42342547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977c46ed51b7fa07bc87f3fd5dd06a2748c26798978279ea8d03fae1f9fc79d3. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:36:18Z), 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/DE1JN2367770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df6c9150af960c659e9e7b9df6a6a83733329bab544d23a90d19525083967ad. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DE1JN2359950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5960b57ec1449d17526e8af17babeb38ac34e792cff8fa262d5650c1326232fa. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:16:48Z), 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/DEAR42496960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825ae6d5e7fd1a1e1b8da6c24c2a54431564a5b9e1ffb054f472ae365abbd4c0. 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/DEAR42487150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de21d5b2d0c0dcdd12ae5d2f7bce01bc673b5fa8fc5cab9b5d207d3fd258da8. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DE1O62445419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6716a770f223c003a4440e828574435842ec957596b5721083d738a9ef741a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEAR42589056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87af40b683d8e60dae922de71d6224fad7d9092d14739deb8355eb889f03f178. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:34:57Z), 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/DEAR42532167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ad16456eb572a2ca350de7f8387516b54d2de22e756a18bd9900d19ee3a11e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:58:10Z), 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/DEAR42517546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f23007fbb1d7635ada988511398fbfd5f42d048bec4dda52c9f964cd38519ba. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEA622401460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d8e1df65a02c6d276d69ead2028de5a52be35e975ff1de83df109fc66cb077. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC062506770.