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 0x8dcaf34905d7d45a345c78128166cbff30011ed4ab9ea73e314ebc3f88c44c53. 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/53bcdd47-e682-480d-a5af-bb91a60c1cbb.json and https://artists.proofprofile.net/proofs/artist/53bcdd47-e682-480d-a5af-bb91a60c1cbb.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 0xcda6b51c15791c1fe620d5ebb036b4f3773422a3d99a3d1580a0247fd66cdfd7. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/GBMA22312571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab4fc3363682ff76b547a2fc5d4638d81a4a272296614150fd65b81eb694811. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GBMA22312572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9da07f37568d3bf58859f44e6540960cf3433d2bd53370670b37ffb59b16f2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:00:47Z), 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/GBMA22312574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b1fb6ad6d39b83a815ec98fe67faa3d847b261f6dac47dd785cc4bce2eea86. 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/GBMA22314041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c1436e4f62bc69341878ac71f54de9e07ab38274eff701f6d082bcf4a4f2de. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GBMA22314039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f7283efae00fe6c138932511958cffb7842ee0cf30390f69bb30e78b1e73d8. 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/GBMA22315885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b1d05d7b4db160ba469c094ac988d951d3a56541de87f3ae1ba330b3740afd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBMA22315886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb619326235b82a3833f34b8ca9f4f41a17cfc03c46c38ceb7f865cf2ab4c42ad. 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/GBMA22315887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d67938e659458b651a4df86e438073731c4c0175a9f91354bb05c6deee7b8b. 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/GBMA22315907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5ae28836bef246635ae2e1c220961820058296ac38b18197f1623e08ec16c7. 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/GBMA22318584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd905067c47fa18a490182707e8bdb7696d3864b5ca67387be094b076d00910b9. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GBMA22318586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccc7c5659d8ace6295fbd1334c266477349c00aa2636cdf38c234e96a8a002b. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/GBMA22318585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03686fa84a40c5500a82ccd2274dc01681091010d0edb85f79c953449ac7e4d. 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/GBMA22318537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fead538884ff19a5a89995cb778e089e2520700496dcece3daa14981f71545. 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/GBMA22318538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f05295c7a0199083f0f5e8dbbbe4cb1bb5d23f2e3b0a2ed3fe3a12f0268618. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBMA22318591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f0103875955bf1695f4b849fa2a05896ca9f3688a3a777d9397f1a5ad5c3a4. 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/GBMA22318590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb1b482abe81d77d71153148bf059c44abd67eeeab0b536dcf1a58b91964181. 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/GBMA22318588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c9e597ab8e019688b6a971292ca94fc1e5d284b6289e5e4c6d2342e7b4912d. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:30:44Z), 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/GBMA22318589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe52aa61a159b1c1ef8972a0dfd1ba3a024b7154fbd4f254d994c18e85d595f6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBMA22318587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ac4f709853814c2db45d243d7be58d67df598b5811fa5ad007dab4c7284562. 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/GBMA22318592.