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 0xf834f0c6f44367aef9ff604e71db2cf2624753e41b92a0e436f025a4000d5db3. 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/bd9f7a75-21da-4bce-8bbe-34ea7ac4c81b.json and https://artists.proofprofile.net/proofs/artist/bd9f7a75-21da-4bce-8bbe-34ea7ac4c81b.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 0xdda9a752d7a39769812e358111fc7392da0a83668c7a05c1cad557c7c394bf5e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US7VG1932820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85766ace3d8f30bc2eb950b2c7a66efa552b9ea63cfda78e42ec50ff231a6531. 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/US7VG1945033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe525cc88cf83933f548d28e64086c015fedf180d42c990fdc7b1ebf4a30bae54. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/US7VG1945036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e25f9e92289e0152afbf80a4bc87f8ee533376eea814e5bec21999c6d80945. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:28:26Z), 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/US7VG1945039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af3559163a954ddbc3855198b557cab500e5b87e023f1f7400563b0ab651988. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US7VG1945040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a3e4522db8b101ba42fe606db71fe253756549d7ab0cbbde39009c9f420cc6. 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/QZNJV2109474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf1ee8612f9f6318dc7631ef0be335b7aa5b1fc3bee73af698da491a90f85c0. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZNJV2109480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf626dd4744c6303c4989f978ebbb3ac3fa9aceab061b93d84c5c32b179461c9c. 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/US7VG2339297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea7ad12e8864fc43817fa173a9c8565448b79632bdafea15a23f88b915ab333. 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/US7VG2339298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdf9e16fe24945e22743a977922978c033f89bbbd23adbbf57acf5afa015892. 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/US7VG2339299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92e91d8f094bc490927e0f92cb7982d958363dc0d2572892b25e267990552ec. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US7VG2339300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa909a9bdd7befdb6efad4a7084a253f1b265f32c1aee7edbdead884f370009c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US7VG2339301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9fa63e98a89722d726a53810b2ee30f8f3f28fe45ef28238c99d95d4f118e2. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/US7VG2339303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f21be09f431b4c6bcffc61cd33d2a5a3c0cadb779c7eef69f2df85db6c1780. 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/US7VG2339302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1604d4f3e4f5939e9fdfb09c20faef588a8319b820dcee88ccf3618385a1672f. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:38:42Z), 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/QZHZ32106985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e2e47c65d4d9bb290a6112de84e4f275db703e8272440fe2cbcfe40e803d81. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHZ32106982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f22f0e68bb5efe3d1d4b9d638d091c42bb32bb23037c7a169f52010ff5dcb0a. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:45:41Z), 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/QZHZ32106989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f805d98cc42edee3de1d9b126c7c3f39497702ea5f0df6d732f4817e89a63b3. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZHZ32106993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089db8b3d84733cb2e749737281b5a38f0267ffe76f374d7db9a5127784f821f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BRD8X2200306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089db8b3d84733cb2e749737281b5a38f0267ffe76f374d7db9a5127784f821f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:43:27Z), 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/BRD8X2200306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615cc3eb2b5de10f3471170b502b7b8f0f7a577fd892936cb3bfbc2843b9ae25. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BXBCY2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615cc3eb2b5de10f3471170b502b7b8f0f7a577fd892936cb3bfbc2843b9ae25. 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/BXBCY2300002.
Tempestade de Amor / Me Libertei / Não É o Fim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9889922422b4789589787cd70eb435b3b42ae7198e2238be4669adfb1558fa. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/BXBCY2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c798e547dca6cc1b29feb735f3e598152dfed9d193b745a683b42d29327efc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:46:05Z), 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/BXBCY2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bf14d5cf78d786eda8de7d9ff082534e03887389af95ceea35582db66ae3c8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZMZ92374509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f41d05b8ee2ebd88db49ffc2a2cd80837980c021e7dcd380a165722a5a7c69. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/BXBCY2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c4085f447b743ab76b6649422771feec42f7b7cb8db07a866b61632c59440e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BXBCY2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b33443aaa57b4d1af480df27a5f5ed5b4701832c710b431deea16c275ca9a3b. 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/QZMZ92374507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ca0d733fcf0832bf19b37ccc6a8fc6c82780c17d0ccb3384e7796a295cf224. 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/QZMZ92374510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0ce99f3dc5927c779f97258fe86f26ed1f10747202a886cb2fae8241004ce6. 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/BRD8X2400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3565a7baec1826228631c94b332ef6064eb19ce009bb38a90d9908945689bc69. 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/QZW9M2406393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c1ead907fa6838dba8a27f9e2aa9f08b72fa4e367455e984a8fe2cd9e8ff8d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:31:59Z), 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/BXBCY2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33df008b4fe7ba2b05a977079b753693c702527a1bbcb6c68d6651cd78e9c2e2. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:04:49Z), 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/BXBCY2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d15bb2b20457c74b57381cf4c5f07018c7cdad67a89cd3d52ee2c51406121ec. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BXBCY2500005.