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 0xcf5b99b8cf96d6424b2a2073c086218c7b57765724bda9014aaf3ef0692ff3c4. 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/8de1dc22-94a9-4b10-b333-a4169e79f4d2.json and https://artists.proofprofile.net/proofs/artist/8de1dc22-94a9-4b10-b333-a4169e79f4d2.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 0x56af0059a8fe45de60f8d86ea7628473569473a8c2bf8a429a6df62f4cf87927. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FRX201804348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a33549568c277e61af32a549114918dbd137b9e2b1d427b6e2be32ac5e1f94. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:43:50Z), 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/FRX201813001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ef306438bf9df187fc4ea1ae6ad92b36e45936aee5e78920aa2d88b16ca6f2. 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/FR59R1954049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd685568bae61ba604104c83fb4ebc6409fb963b5a63c6f4466c6f09b91cea2d. 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/RUA1D2151778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5903edae9a566fef7538a87835132e2decf6b53db01df74da8aa31acdcd2cc. 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/RUA1D2159600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d279fa892248362aa45ae69d7d7266a172c8237aa6e92fe04fd038743baad2. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/RUA1D2165548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d06ce952d8e50356e891cad9747bb1a4d4a9415304566f332e8a2d3a46eebc. 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/RUA1D2173758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb659087e068d50bc1adc7005300013e51007049c300cc80c740e2a3fb8dc5e82. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/RUA1D2201767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d2d25bd8c891b64de0e4634eef278aa2cdcdc614626048481252cf459090ed. 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/RUA1D2248154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae94c3ae5e0b792a4a6ea971923ecfeca89b625d15eda78409cd97db2f77668. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:26:43Z), 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/RUA1D2259161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8adc35bb77327006514f72d3c93a96b6cb0226bfdfa97837a7ef08c92a0934. 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/RUA1D2263111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade666a14bff7208d46f178b3949826e5228f901d358cb8ce54f0898ffccb90c. 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/RUA1D2282198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085cd2b0b753ef6a7b6a8833870584d1de0eb306e5f57f9cd84369873ddae59f. 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/RUA1D2302248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1128b2c4147f5d601cc524ec12ac4bfa85db395555f71a91378a84bd11fee13. 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/RUA1D2328451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1345372d830063b78ef29f1acc74ebe5b3edde31ba38b598e13be5febd0f1c97. 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/RUA1D2333194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c026db9dd629a3ba5e0fc587958e5d2d58b6c5d7f262c9f396adcb98309b01c. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/RUA1D2353646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b88d7ba0de337405da4547d757be72a45c9c02b6d93429b363a1d1ee5039bf4. 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/RUA1D2361018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa768b58e3cbe0373ae3a3b48e533395ae534e7cf7a170524cede61ccb29b7d9d. 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/RUA1D2366163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4765a5717ac529233230426504a589e4af53caf56ac0411d171291531c3da1. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/RUA1D2381438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4c6c8f6f318b018dfec6254a735d6648d1176ef6bc31972b22fe3d0a0459d7. 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/RUAGT2357836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc44446c410cf57fb30e8378d72b07f3b27a4c76f6b3dc0b2546ec88b19d4eb. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FRX282481365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d2b4071fbbbfc2b48e9b4ebf6bd19eab7aac8ace3bdb2eede23fa98c418fdd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RUAGV2407183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51edc5d04458a7dac97c8d065318960ff31863673a08197000de8337688e6da4. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:38:44Z), 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/RUAGV2407559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a859d9743c5d71f999e77783f41d2ea21ba21cbbd877e2414678a2f646d5842. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/RUAGV2410496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca49fe508a02952bc62c99a1e6356eafcc35144367c4827cb81c32d108a1d01. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/RUAGV2508673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4523601a3b1292b2530eb0e1f244097e20df80b3da525f1307b62e8c928ddb. 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/RUAGV2509678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d74b1e02d414d1a8135915aba2371e16aa301d64afb9425ebb256d6779f96b. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/RUAGV2509679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b73be0f96534a287f20d3198bcee7378935390b2debcf5d64d81bf55557ea2. 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/RUAGV2511250.