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 0x85181a2faa951c59e99262a4bfea531559e9016df884dfa0101dec2a5921a7fb. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a32edfe1-7927-4458-a179-26f04488353a.json and https://artists.proofprofile.net/proofs/artist/a32edfe1-7927-4458-a179-26f04488353a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Around the World II (Compiled by Rialians on Earth)
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 0xbd6b8176047d6531e1847a27cde833bfb99bd0033961bb47c00e06e3a02559ba. 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/DEH742007114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36e15b3f156cd323c02a45dfb7b837b64680c83f9d050d498d696ba6dd3c469. 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/US83Z2044924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0471a436431998e947ec235d026a9082b59f0720df722c61ebb5e61c909a1caf. 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/US83Z1924339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70855099bf148071f1d5d0de04fd62e2632b3bc581963b40d3d6f204212d13d6. 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/US83Z1924333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24de5787256405458dac7b07249713c788405c0669ace541c74cd39ca2cfb977. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US83Z1924337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a7cd22e018f40acc6e2f9b31c166949e6ff00bebac1b24c653b217873c5ea2. 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/US83Z1924330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d06e41dc8ea291f094ba92672739b5877e597a5852675176a4db9a0ac8d1fb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z1924332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d3789c880ea3dc4fcbaf547440864a3b54bd96fd7a86d475333c9dfdc3f00e. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/US83Z1924322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09c16ed30bc05ff1432b7f849158a220b14862d000530aa468cc49732aff4f0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z1924326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3e8eb25b0f540fac144e1dbb6aa2c64266d6f9c1fdcf2b6723f904296e0f58. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z1924329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66123dbd7c82b4e42df9a7e69b6a212dd749a3359921244e9caae2ff3cb01816. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US83Z1924341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cb500bee37f3c50871bef1f744eee9dc6d2cc5126ace7ddeff8d70c26b91a8. 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/US83Z1924340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da0f5df7ba85466c5d84f7b70c45d9a5a1e78cf4cccd708b763a8bcd7a77199. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2021134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891d02ddd8681a0a1a33c7cee698a8efe572f20b48336c03d90203ef58f044ab. 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/US83Z2021119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fe78eba381f9fd5de46cf9d63581a859241a90b0d2b6775eff7cc629f33202. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/US83Z2021128.
Oasisphere (Compiled by Salvo Migliorini)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9073a804e36f5877a54c02d629bffe605d484a9b53769e83dd73cecdab27a5cc. 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/US83Z2037772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a4e0068d0b79e244a47ffe5c313423c08cb47cf395f6f9e71fbf430cb41372. 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/US83Z2037774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90aabd667535f2f44056cd83ca37c46e64ac17b784166550b387615a4edfc894. 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/US83Z2346336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea0ee7eec4e5ba9a1f798bca39b6704f16483eda978c798c72cddaa4f61d3a2. 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/FRX282199245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f39cf78c20b90dcd52994a92dc532d113227b83971fb413b145f7386249b43a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX282199246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695586d5b33d974f42aa59ce5892cc397eeeeb451a0f00bce69867090bef5a23. 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/US83Z2022150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8377e7aabb163184b68f4177966b07d4f0b6d787486da26ea0ec4f2ab0655bd3. 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/US83Z2121108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04995e90f9301ec89fd1c04920b7ed92959fcdfeb05df3283384340ee2985c72. 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/US83Z2121111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f6457219bf45b2d44209088611f0f6ca870d31a9bb7c651892282a6b5279d7. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/US83Z2121109.
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 0x7c09f17e71af80eed46884c64a49c75614b84b9f095b23e67677228b597d2606. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/US83Z2121110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21af936cc314bd8b6bcd35b3c9386b47a9b9d78da126ed65bc22f9870dc82af. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US83Z2035149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5102a1a65d7a956493d49dfd788243b8b63df3429e31dd6b638df46eeceadcd0. 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/US83Z2121206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c69f36a1c2da27ec8d64cbcab7f3b75e07c2b24894e051e1a7c2b9893bd34eb. 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/GBKQU2276014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f516b9dd4974d292aca1b6c61968a0642003457fabfdf15646eeb82159e363d. 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/US83Z1917560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b55460242cc6256d0dd0722438b2d9845ef9fbb5026293eb35a474e782cfd3e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEH741920920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fe57b667e0a5e32af54ed380f3b226859eddc76e851dfe8fb6009754578b66. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2466886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0486df23d34ae6bac037f9a962e27fec08ab4f0e5dc5b11d469dc893d84cd97. 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/US83Z2413574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04280a074612a676defa4e077b75b63ac79e3277517658d89fb0ba89f1d8223e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US83Z2413577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc93410ddef251c4cd4290f1f1906cc25548d96f6a6092e6fbe48dae52bb115. 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/US83Z2413573.