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 0x0fed12567c4bc890cac6336a9d0858b2d1f4c39cd80e30813a44f78e57c7fdb2. 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/201953d0-bb00-4468-aed7-54d293542bdc.json and https://artists.proofprofile.net/proofs/artist/201953d0-bb00-4468-aed7-54d293542bdc.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 0x773dde204db8d8125c36271d1808457d8d92bb17514bb46311eda03c7c109ed7. 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/PLA811400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef3596ad1a69a91b528f7ae0ab0cc83f761201a237b26f9143f6d151e2821ff. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/PLA811500035.
The Ballad of an Elephant (Sambor Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15bca4277c7a05595615420b93a0e6a8d9eb2282ec08f7dc49aee62a539998a. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/PLA811800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a9627e6313bf50c70edaaf92c63a75a07f25a7fe508f76ba772fdd368ea37e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:32:27Z), 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/PLA811800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4715707d12b640b8b346be9bb3dad94b0ed8b56635fcb6ed5c35b819d4b4a794. 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/PLA811800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dd675eee9223094a36cc3f21d03c150f8bb37cb1184fe3e0273b25894ddc35. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/PL49L2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905f9579794991d0f5c6c12e1e2d272f8015d0d199370af824920ae8af6488e4. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:04:58Z), 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/PL49L2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34eb5410862c2bd3857981afbc27fdf3b5f037fac434b21d1b0586e87a990d2. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:18:06Z), 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/PL49L2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd76c1a01545ddd1fca5b87b0799c50a733836733e33965c57dbe1f31a33eea2. 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/PL49L2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ce839ada2d9887028b1a34e50351448c4c62d1650c2eca1d1e9034c750b422. 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/PL49L2100009.
Ty wiesz (Nie ma co trzymać najlepszych talerzy dla gości)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d64e4b2e699e5051a1c36506dacff3aa86059a4f883e7c3e85c23617a1b82b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:01Z), 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/PL49L2400001.
To nie najlepszy czas dla wrażliwych ludzi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f97148deca0c882871ec01af9699f582239249b0773e931c211bbdbe2853a6. 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/PL49L2400007.
Nikt mnie tak nie zdradził jak to miasto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9ee0fe53602365699ddacec08e98902017b755e67cf7db7f9b11bf876a8709. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:43Z), 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/PL49L2400009.
Wszyscy znamy kogoś, o kim jest ta piosenka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cdba4b77c362c33820d6e6b3a66269800164945750bdca0e99c2a79b498809. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:38:05Z), 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/PL49L2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b138c9b1ce7c3003d1cafdf9f23680a2b3c991e400675e8cc564e812b5dc5a9. 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/PL49L2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e05fad929614497e131a8e8a547fac00d54b37ec35db25a1967a8846127c10f. 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/PL49L2400005.
Pająki, monstery i pingwiny, czyli chcę być z Tobą do usranej...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89c5923382b6653a603f6574ee39ce50f767f90c681c2896f95411ee082b2a3. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/PL49L2400013.