A pastille or pastile is a type of sweet or medicinal pill made of a thick liquid that has been solidified and is meant to be consumed by light chewing and by allowing it to dissolve in the mouth. The
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 0x3fb85e53b5ec76872545908761018bb3b4b04a25b627b066d7287b3edbd6d70c. 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/1e249760-afbf-4cc3-8e7b-63d605ed18cf.json and https://artists.proofprofile.net/proofs/artist/1e249760-afbf-4cc3-8e7b-63d605ed18cf.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 0xbb05044abba668a14a025b2495a9fef25a949223ed82e59f7feab4782d37bae0. 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/NOCKK2351010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2ca06d897f495bace3b1a7a216bab872b31474f91bbc11da88879c34ee9e8d. 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/USA2P2417084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379a685539f78171ac9a3cb0cef49f0fe3d7b310c94fcb647d7f9480ff98297a. 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/USA2P2468467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f578e3236eca22870e4aa540249146b6d57d17cb240a37d3ba6a5ac69d20d8d. 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/USA2P2469715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2716d97668a9ee4642aa1be033a380ea9306de62d71a1e00c90f23109a1a1f38. 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/USA2P2468466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c312b8b480025a1cc28fe1ac602d57464a1de0a317c12a494eb1784c4c11d1. 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/USA2P2467474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa845e81ed6d11aa36c07357371e84b13eacfeb352784c485760f09144d28d8d8. 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/USA2P2469521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8cee07c03ab75a8739af3615e50b70c08ad35788fcbec35f4ee9033d58668b. 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/USA2P2466523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cd1e32777c45a0680dd6df9062f9bad893ca2e8f299b896275209b45abcc9f. 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/USA2P2436297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f73cae0e0525e8deb3af06d3453fe6e98492b11d236ee6c7ba4d0377457d3d. 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/NOCKK2412010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb1289e928d7b06c87defaeb042606c5262a3f29593823e97cd8925ef332b1e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P2408063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c576849348fd5c15f853e2ca9dc35081482013711b16518178eb7c53c7a038. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZTB92323901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175770800b476f4613ba56203304a2fa9c48361cb936e2509c6a53953429eab1. 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/QZTAY2369694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a9efc3dead6ba935195019f21e6ef5b1bebb056bc1e6ae832115ceea0596f7. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZTAX2320991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae09bc80e4e6c6c34ad4d6e9b2e38262c908c8f4f13cf3372ce5c8ca9942b424. 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/QZTAU2327998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd388c7d874cd4a9ed1e436917ff06762337905700943420feeab7a910abec3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAS2321379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4d2f7f4aec4cac5e4f4c4d1a08814438cdf1ebafaeb4053a8e9dc7e54237d8. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QZPLS2391684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd598ab8aa4eacd19479ea7ea2246e1e053517d6df223bc0a105ff8aacb415a68. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZNWT2366613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9956bb0b56f38200a13d0ab6e616bbca2a4783e06c776dc8883ec24b9405d3a8. 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/QZK6M2324272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890a29c031fb2b01f516713ac14c7600655152b564c5ff5107adcb7305d1c7f0. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZHN32371789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e57bdba719db910738d4f4b632e11d6b9adddd40a3282084d3b2e1cc11af6a. 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/QZES72396610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504e5ca09bdc0f47f4d5853b3c8484883d395d0c8bdfeb62dc5de7c92f9a6f15. 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/QZFZ62341102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fc9e79945831e988b46499854dd7792242908612ce9bb37d62755d222e06ad. 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/QZFZ62344752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8900ab9a9477bccfad908c1a195301cda38a3119c79531a87be50529373b03d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZTAY2211142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8bf9c2a671d88ab83ecea7f79047552fef152f9a3c00af9de11b6ee65167b3. 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/QZTAS2280738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9cb4aa85f9d611c363427063d9b51e7a95a624b341119fc74fcc5bba5555fe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZPLS2295179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54706d62542dc79588bf4231f83aa99099107fabd4a8de4d4c157395ab1afbfc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZNWX2235999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5471764f143bc7d12049891fad27e88fc72126e7104698e09150e2e3f7cec4f. 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/QZNWV2275656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c4fab6971277c1508df2a4156fea7f466406e66724a82ef1d157fa6e6f5e19. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZHN32220146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b13ea055ee88e4be8f7cf82080d54fed71b035daea169ac662e0e80bfe54baa. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZES82228703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4605df738eb6fa63343a6861e56c94f53ad9b5db02a1248445c3d83adf4d04. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QZES72276625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f60a12d0cb6c455ab2970f4bf93229cceded26fc4ef22d19bef9006003aaf24. 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/USA2P2467161.