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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6f5e3ed61f1abc71a71f36218a33e288978749821dd8fd308242152459fb21. 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/cf8525d9-ecf3-4fe8-8fba-e68d295b714d.json and https://artists.proofprofile.net/proofs/artist/cf8525d9-ecf3-4fe8-8fba-e68d295b714d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nie Bój Się Chcieć (z filmu "Zwierzogród")
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cf0dffa212d126fc6bfe3a8db663ee3a8734326d63804ae7398fcb4d01480c. 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/PLA811700095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fe04c1e16a51db71c32be8a8a52a374575e4862a4c3fb9681b72e0687f736a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PLA811700089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35424b823849b82fdf34d4f59355247979cf7dbeea7411504a0295870a73c766. 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/PLA811900392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d1beb0b35fb8d9f3433a042ffb08064e83d3aab8fb38f454263e17099294db. 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/PLA811900394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8946e353a7cbe346572695a1ed09240b6c7e4c7cb30316202248200e3f4161b8. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/PL75R2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed14a91e2c5bf54e000ae6e7acabfc850b1667d614da579905558ba628f11598. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PL75R2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48eb860538473604d3b67a738fc65bf7228f2c9f78eb12dc02acc812dbad15f7. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/PL75R2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8946e353a7cbe346572695a1ed09240b6c7e4c7cb30316202248200e3f4161b8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/PL75R2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00255a36614c0aecd771d08f9984ba6b3fafceb2ffbedf13835b3db6ea83e49. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/PL3D62400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b973eceddf394672567ac49151909e9e9318fb96ad3cf07ef88c9ac13d5b1b. 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/PL3D62400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf774407e3b8d5205a7f2fb9dfef021e626523a122fed3beb3c21c4a8a35d2dd5. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/PL3D62400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fc04fe55a1b238cc10f569400628022b31ee2fb76a72c3d8d59416dcdaa4e7. 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/PL3D62400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf703fc16ce239fc94c25ad3ee46277cb46769bf32d4ad899bffda8f3db07ddf6. 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/PL3D62400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8f1dff923ebccafadf282311361e1d7a392f48f0f99fa6fe1478b833d50021. 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/PL3D62400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f6873f006bab94c446d20f715b86a325f9e476f1d217a643291812423bbeca. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/PL3D62400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3946d387698a802bb07e87ebdfd581e528498a9895f41c1fd06629dcefed32. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/PL3D62400019.
Sometimes I Feel Like a Motherless Child
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357a96000a19e687ca8e1fc22ba2b09174c75798ba08b2c8bfad4267a08cec50. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/PL3D62400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc200de028157ac7d037b3439c96f06c6f9894290538b6ce156c0837f97cf71a. 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/PLUM72100173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57174755603cd95ca480603ba6d43bd4786834a9462db305714630c63cbdff9f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PLD111900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca5043c435fe1096f2422bc7248a98595e37de01a5b51b4979a4819b124f193. 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/PLD112000003.
Nie bój sie chciec - z filmu "Zwierzogród"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8b30dd194157bd18ef0893d4db7a4297f29b5a08047f5633ea7b720f34fd8e. 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/USWD11675988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7ec77857caa475b9c1867ab91cd47e69b08ef5b74b2da195879fd19f693b45. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLC591900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19f2da8b652b543ed2f90c8fc1c697a2853c2248ff03a3d29f2f8511c360824. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLC591900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4473467fbd790b8f131aa5b11b4eb3274a198706612b77b9c76a2e2755e73487. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLB822400219.
Oni Zaraz Przyjdą Tu - Live, Tribute To Breakout
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e73eb9218824f1af17219d64055790bffbd861f5b13e898830e3e59542469bd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLA392030408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428ad69f5957e55c12ebb7f3088a2ac55e4b59914bc087225355a440ab73d088. 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/PL90S2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6952f53ecfe4eb557deb2bfe622b7640990b38ca611bb3e4eb6e8e97de599522. 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/PLB822300269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41565c35afa1d88573584902106fc708ca17c8779d29be4d22efae645cd33f75. 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/PLB822300271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41565c35afa1d88573584902106fc708ca17c8779d29be4d22efae645cd33f75. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLB822300271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3617071656144179951d6f661f8393ee13cadcca7a27656ee7d35e66cc0ee2. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DGA0L2373015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1950b1491c428a73c9224d99cdb78af315791fdf834754481df16ceb0e5bb782. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEAF71482042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f06d4fa419022aabec6d5525dc43f81b74b683ea30fb853fa8e08ca692297b2. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/PLA681602063.