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 0x4953a7d9e855e6847a6bd149dbf5497cc20937d79065f6e6df384cc40f5e66b3. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6152f8af-f859-40c7-8d17-a9da9afe5383.json and https://artists.proofprofile.net/proofs/artist/6152f8af-f859-40c7-8d17-a9da9afe5383.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 0x9c90f2fcb41345bfbd26a6157df17295b3de62a0bba6cad611ac09e451b49bb0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BCZ0G2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac81ec50fb02dc731756a9b4b33de46f03aa246dad1d611ec21cae4ef5644a6b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:03:20Z), 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/BCZ0G2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167fa3111e6235659319e0402b8440b8b773cd5647620dfe1f3983db07981708. 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/QZW9L2214000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f60e23f180df7ba63c617dfbcb958c00248ba1454f76c4ba3640440a7662d7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:25:49Z), 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/BCZ0G2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c27e99a3e94e241e2fe6906666b82816d4c79c7e52b88ac368afb24ac6c58f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BCZ0G2300003.
Vqvcssmefmt (Vi Que Você Saiu Sem Mim e Fiquei Muito Triste)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b24bcb0c2d662e254bb12cd2156b17ed4da06b9b1237cd9e4bbb3b52ec4da6. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/BCZ0G2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd5b3690a2c341aaad3321af1b5b300ca34d1a30fc2418ef02b004898d5c7ce. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/BCZ0G2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93894991bad7c4e778d7974ca2f2d44204b8091cd613583f54456dc5a22080df. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BCZ0G2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca49760ee2a7eb49116eb046a6249175cec0e05e1d7cca7f9764f52fdef33e5. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/BCZ0G2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1009c924ca1a8a5890ffce9291c3af673378d5906a9ce7c967469fd647c551. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:17:08Z), 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/BCZ0G2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93894991bad7c4e778d7974ca2f2d44204b8091cd613583f54456dc5a22080df. 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/BCZ0G2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b2c2779be8094a5dc346b61b25efb40bd946f36be56635b900109176343c5b. 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/BCZ0G2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd5b3690a2c341aaad3321af1b5b300ca34d1a30fc2418ef02b004898d5c7ce. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BCZ0G2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3906d2e3c58829b945348caf988c6ee25923a51164082e7eb5413873d8af9bc. 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/BCZ0G2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca49760ee2a7eb49116eb046a6249175cec0e05e1d7cca7f9764f52fdef33e5. 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/BCZ0G2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20650a71d50ec0820ffca25410c8afeed3f5201b6a86efc7e408f6dd844091f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:42:56Z), 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/BCZ0G2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb979caf117ea711d63624dee642fe39b3485aeb6e35d4fc81782b5d527593364. 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/BCZ0G2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e36cc59eee0aae3b374b5a7f5acc4bfc1a2e889f82a429fde1d9820886777e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BCZ0G2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba4bf4650416e6108e86b7e9b09276552cb043f10adac730be5091429d80981. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/BCZ0G2500007.