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 0x1f4f2f3681be55aada808e616b8ff5bf1f92be09c26bdfc7f79bab5a82c1239a. 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/fd511bab-2c35-46a2-935d-51699ca7999c.json and https://artists.proofprofile.net/proofs/artist/fd511bab-2c35-46a2-935d-51699ca7999c.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 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 0x203c8bbd7a5f15ac87d124695ff53d844e393104516fe859dc35b4144834497c. 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/USEP42247004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333cf3681122809535f4eb1d8c063c2a9f330fe299f3d30b0f54f4508b6ccaa8. 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/QZAKB2136143.
When Life Gives You Lemons - aldrch remix
When Life Gives You Lemons (aldrch remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ed661f82420de66e90202d7b6dc9aef4e59900780f2f310a773592c6db7458. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USEP42323003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17839f15515582932d4d230a7c48be3920c99903ba7da9da6aea8c3aaaee3b71. 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/QZHZ32242851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011a7782c7906ca9e9716f3d61b2c55eeeee9398ea5f579dc0ff840116320876. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USEP42333001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251b10a5015e2d4288795288933af029834e91344cadbc65398416bebebd38c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USEP42333002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30111d22ba56671ceb6ea9bd4819f31205c164d9b365b2644fbbcb16193702ee. 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/USEP42333003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baa3578bdd4de5949e0ba6bcbbb307cf08c562ecdbee7250117688b261416d7. 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/USEP42333004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e49e5222d52d32d4b392ecd1d24ed0685bdbb188d75fb3c83029d1f6fc9524. 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/USEP42333005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2381ff62f5e0417a9c6d93c3fe078d44c03347f4594a41266bb656c289a935c9. 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/USEP42333006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ac044e8bc39dc962c04b11c40b2ee4c54f636fd70142a350f195cce64caa7e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USEP42333007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b4d64c8bc9bc9dc0172dde1e71225633f622564dd7e7a5e9a98dc0a73cd8c2. 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/USEP42333008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815b793d7f182a0d5b50c11f68a25dc567f5d9d7b77c4c688d2268a13f6dd8a0. 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/USEP42247001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35e7c513ceace89b4d8459cfd64844ac035f03e8be351751ab34f15c417ce18. 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/QM24S2200966.
we dont work hard (we're just naturally gifted)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc9cff78ce757627ad036cefaf3ff9ebdfcb8ef75aa38d4d0350dba0b9c76f8. 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/QZQAY2417264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc9cff78ce757627ad036cefaf3ff9ebdfcb8ef75aa38d4d0350dba0b9c76f8. 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/QZQAY2417264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc9cff78ce757627ad036cefaf3ff9ebdfcb8ef75aa38d4d0350dba0b9c76f8. 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/QZQAY2417264.
would you like to go out? (second date edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347c9d109f792a257db453bc38a81c051813836dd5d7063098aa4e2d8a4a6d6c. 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/USEP42423001.
castle in the woods - poptropicaslutz! remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5729212354893f30ef0639496ffd29861c90bca7e1789c98aa70ecd28ea8b958. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USEP42423002.