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 0x46664a30bba34f520f962452694a031552092c5e0e36234df4e2ea70c8948e4b. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/261efd65-efc8-4e69-84db-40490ae914ac.json and https://artists.proofprofile.net/proofs/artist/261efd65-efc8-4e69-84db-40490ae914ac.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 0xa3a69e7103384f717a55abeacc9388c765060a9e0e8940134447a5fa74958fca. 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/QZTB32316941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ba84e2e13d6952f34c5864f5aa09f3be36dc594c2693cbe08491715fda2ec3. 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/QZTB32316944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cdb3b89339afdd6bd9541aa23a4e30bb27981c05fe5e9fc125468dbe581de3. 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/QZTB32316945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99a2d3b75d36b47763d61844cefe879a72bb69a8c6ae60d52e14421d5dc10ef. 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/QZTB32316949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483a18bd88d9f44e01b712919d0d28f638524f085d647c4d182e81fc1db0676f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZTB32316951.
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
Humildes do Som Coletivo, Vol. 2 (LADO B)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dc12d905dfa55606af1feed7c8bc048287ec4a3fbe06d82b1dc9d011c973b6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZES52442099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e8577955f879efca363ab12e5c44aa4ca49b8362a6f949219cedc0aaf2c30a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES52442101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecc9380a4ed2b58d7edb3f3610541859aee2faafcd64b3214cefa88b0f726a5. 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/QZES52442102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ba69b4d2335b3a564f95f3ae0265697200f15e5da269b7a87b299c620a5bda. 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/QZES52442104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa0e0eb21f1dc7761f5d4b52187c35a84a3bc88cbf6c52ffec1b81a9d26f108. 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/QZES52442105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c8f9875197a3690a7246e59995d9e2ecc7037f5cb99ba00dcf09386c719c0e. 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/QZES52442109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddef4cde0562c92d362bb6986e7186e305486b893239bcdb7a45591a0179af82. 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/QZES52442110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc80d6fd10f24570c4c33b893a98261b85d9db20a29dc02809872cdfba5a118f. 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/QZES52442111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f9c99084bca932309311cc9efbc5e9de9a28b80ca004ed9c34f5242a10287e. 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/QZES52442112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c159ddd5b350d6f5418a3cbc47225aeb82af2f08b8fc1c0151090ec50f80a4. 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/CH6542430299.
Come to My Place - Elk x Arquelano Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa025fa60f13213b07023e4c6f01b8328646df8b4d20a99de989bd5347cc5cf95. 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/QZW9M2339174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a12ba0a26c862f45477e348c366ed384392db657209c96f391331c4a7998f6. 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/USYBL2301912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8445ceefcf938bf03b0a679bd8a1b52ed398db8977cf6e6d53cd3a2dc92c6d. 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/CH6542365062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627a1fdaf598c0b0310f2bc7507444f61302be9ab0729f59b5ff6a56a6c732f3. 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/GBLFP2356609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5dd7e835635428e9d34d03476d404ed46d4a67de1173a092be1b5aaf3c0f56. 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/GBLFP2356610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aed8785a6c1a301f90fc5a95a4c7fdb774d5cc433c4e3e35145433c034d267. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH6542323154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6350a323264be515ea52521fd71cd31da1fa858d4230eadf796454ca5b1b51. 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/CH6542444475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54c0d50ae40aa540459bf9842fa68a45d4b51308c31298ea3b773d6658b54a5. 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/USYBL2400948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b75e071fef175461447cbeb2b69d4bf10da953b3871bd4b388e5ea947603730. 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/USYBL2400533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffce041cfc9a2e1b0b3b88a0d94331c81dff29cdcbd6ca5d91afe7ed9b14b02. 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/USYBL2400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653d887d7cf87849d0fbc193c5d622887eacf705264b73279765c5183b10bcf1. 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/USYBL2400949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa554378afe358b2be5c7b95ba9e467582f07661d2b78d8568cd2abf5c1b93bf1. 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/USYBL2400951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a145715ebe25891c3889f28ab2804aa4cdfa36c772272ba0aa9f625017b9a69. 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/QZS642337711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68518abce881c7da7132017311c29ecc3df5a2df8e1177fe4600c1eabc4a55b. 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/QZS652319679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665868deef4a2e5e28c899454c5b03f6b92acf394d495665d7aafc297345bf57. 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/QZS652363760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec70083628889478a35e1cc554ee2769c802552b7663e614f8afe5b7679311fd. 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/GBLV62313615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a733075bd6ceff79abefe3e7807dd2dcb371fda2494921790b3961914cf379. 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/GBLV62313650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d64d39f78a076caa417f2a1012cb476c189931733063437b13addcf1ecbe4b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBLV62313637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cd62d80f4f12c61f86f3585635eb6ece6e72f5d74610e0591a37b50b6f8850. 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/GBMA22302925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389ce4203bd96bad0c2c904c40e7efda03b8a0b5be92c8c9117f043a5117be31. 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/GBMA22302940.
T.W.G. Vol.2 (Selección Sudamericana 2024)