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 0x63215d38a3541a6863cdc6ddd82899adb857833eaac80de0a411538d43225fb5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b32d131d-86e2-4273-ae17-39950cbd6921.json and https://artists.proofprofile.net/proofs/artist/b32d131d-86e2-4273-ae17-39950cbd6921.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 0xeffcda4526de2d2566e8bfbdfd58b27e1cadb4fd538a166be7ccdf9cbfd7618d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBUM72104389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4099031957d065f6af0619e27ffce4834f917800eb82a6bcda18efa9375d8d4. 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/QZRD92405210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7912c7b29f1e66d35f225f120c5b1a06127d530d4195ecd8e6737c27a2aa64fe. 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/QM24S2308593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db5633d0c6b7aefef42a77001139bd22b1d80dbbcd50b0e3bddcfbb3e66dac5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2307693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd159cf8a7e771d57acdf624ddfddd6083ae637e1e3ed24074861ac739ba59087. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2305567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde307d7cdbf94cc0e0950e7eb758de9e92228b3d5d033e2e464485a134e6767d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM24S2304051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592267522aa74a0ad6551f0096d303d7730d35e134bcc17065fa85181c1b59ea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM24S2302493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcce92a56718a836bf5cb57066078566f0e30634058b98804265e6f2fccdb698. 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/GX3Q92321250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5ed54d56a8db87a57da37bd08b74e1c3611796deeab3f5a01df0af3c02c30b. 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/UKXN22234698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81265b8aa6f3cc075f3556462645715d5b1c43aa33d27acde66a817bc49f7126. 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/GBLFP2282417.
Do Si Do (with Bryce Vine & KyleYouMadeThat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dde177f81a009d658fe31ca46a2ed67434485c376356d77b097d74c2a8d03e0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM72105437.
Party In The U.S.A. (LittGloss x Shaylen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e41a68c9181aac683cb857062f150000f86effc0dfd02208c804c0597d318f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DKUM72100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e994caec192b06ade745bb42c95a66404cec232a57ae5a889c021d457b9bf78. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM72009129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5656d401687407f19d505871d6c9ce57732f390c7243c10c8a5526e302bd8771. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S1802712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2da493194549123974cd31eeed5ef128c3076f3dea5b360ea23104feae4658. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAT21701112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db1d961fb10e31e0bb91d559a90aa511efdccc1712e7d7be1159fd50854f2af. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBUM72106422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5433d2b8d00696842ba2005241f459f74c377063354e576c5054cc24a2b6a3dc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLUM71900128.