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 0xfd019a0b82ef73fe40eac82461ae35c7263efdfa7ac4bf0e7608bb208943f8a3. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12573e88-a676-4671-81a7-dab3811ea5a2.json and https://artists.proofprofile.net/proofs/artist/12573e88-a676-4671-81a7-dab3811ea5a2.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 0x6b4b6c861f5548219823555478774a0b25d1276692b2b46312a741a87f9a12d3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GX53U2376966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e40f0cf6999198d6b35e2600ac77c33e786e30ecd75f4577225c05f60a1fac7. 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/GX53U2377174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7b270146eacca582c9e493da1deae5c447becf6fb92cd7ae35218dda4c460c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE6QE2234048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf186a7b18d005a07ad1fd27dadba45d73cf659a5020aa8844f33637b924360. 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/GX53U2388757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa312c5dcf95eb9f88eff240a158ceb942fef99fe426015336309473a0528c14c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAJF2568034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589a87b0c6e2527a42abca349c009f3b01933b49308e0b9444e06e02ccf386c3. 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/TCAJF2599014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6153e3692ba6b094f4d94c67eb4a764297daabd419c2657a789249766e616b7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJG2599034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a352d8a7d7f7870a48388a0923357a700b637a8bd6ea075c05a71ac1d17729. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJG2546279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3425adc3d0c5cb1045135dd13a89f16c6e779a51b063617cd22198b6a7c192ef. 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/TCAJG2546299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cd5945c196f2a8664079dcb5a53f40eb57a4b6bba08a85419eecc5e666ae3b. 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/QZES52538999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4bc3212d140a0c8506c1c7306e72786fb5cc071243ef24a1d9f71d391073eb. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZES52536939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768981a1291d47ef013619ad6966efc96d9279650f1d2b64d2ea7701a1b10686. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZES52539108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb2f7a35efdf752193a3db779b996ec4c80a327193cf428e39f834bf1adba13. 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/QZES52539089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d65a6c83319a7e076cb9507a3d41b539f613bf632088fb8b57837e5ac12dc4c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZES52539000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05912b013c5f16da8ceb0265acb69b4f6a809d90431fccb10acabe5c849582fa. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZES52538909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc02bb8d4849ae66a5d508eefebf51a1404cf55b4e46a42b896554a7c82779d. 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/QZES52538926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96c501ee035e689c2b37ed8065f85e0f73cb4a856eb2b2e9ac6bb4dd0715cf8. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QZES52538994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7307a85622bbcfda7133e29629e70cbfc8b4b74bb2e83d6dfa59a673d5d794cd. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/AUMEV2523656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8845323b98c906678eb0314aac764ebed9a38fe307f6f19a939035834a710713. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/AUMEV2523678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3132b2b04d535c1661ba37b1267c6b0559fe7657aa4381b1cb76bf62774361eb. 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/AUMEV2523676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd394cfdce9ee21cb86cdf0d6aefe7726ebdc7c637455c7ce46cfe1d9261c61a. 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/AUMEV2523666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c3538145aee4d561a21c95c49cccf68b32e4463bbb390b483b0f47caf9db51. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:11:49Z), 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/AUMEV2523677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0e086101b7025a00071e9234c80b96f5964e68cf66f8e110887272eb50197a. 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/AUMEV2523681.