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 0x7a4e74eccaae598cae53af9e3d58f91a3f8f0b362275f5c394f35d53926c3296. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e426a857-d451-499d-ac96-990df0a3b68e.json and https://artists.proofprofile.net/proofs/artist/e426a857-d451-499d-ac96-990df0a3b68e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mala Reputación: Latfem Presenta una Memoria Feminista en Canción
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 0x612df9d3311c6177427d970620f285f577c93230770e9f2b3efaea987a319e78. 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/QM4TX2012085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0930c7811bd8c14141753f560b1aec48922537f65dfcb30be1c0c51796dbbb37. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM4TX2012080.
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 0x826aa3a423c59cdd401ef8860bb28be108717237fba43c5747bca00360a10b6d. 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/ARW861800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907791bdd70d23b47db1d219c130f0d70c4919aad2f0be2099498cf1276a5904. 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/ARW861800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07121c1877a9fb19294173ee63d0ee0764548b97516c35af1ba91c1879aa5817. 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/ARW861800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d136ed90499a34128f806995617fbf4a8599dec4d7e3f8ccbe62b4971f1b8b. 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/ARW861800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83f6a5e624223ec031177381ba3da0ea5ac4032bc4258c0b4bae3cabbb55d60. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ARW861800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5df7eedcbc4f093d98cb193572f39536cead913ec0f82bf941f18d7095c3a1a. 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/ARW861800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f34df56e7821a5da900f600b46888705db74d47a1da18b04ee56af20387f21. 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/ARW861800059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d613713f29757977a7d93ffb7a602bc8cc9927c4c54d6b13a0a5f211c9bbe1. 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/ARW861800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084f688222c6049e153f46cd2505a9b19297b55fa2b8551e39db89dfa4541947. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:05:34Z), 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/ARW861800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af7edb6834a98640e54240cc8a388307dbc23a696fc8ebabcd43e387e4c2957. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:29:24Z), 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/ARW861800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865e4e07480fa5da4896632b1b8cc96ed7fe24eef4943fae0159bc02c5dd2018. 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/ARW862400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5430d1a8f7e9e3e6ee752e4ab8d3f599dcf75a00f3560f0d168d4fe0234b1a. 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/ARW862300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0625221240002a49ab81c8eb84ded21645908d0f2fb81f4ef9ba9885c3aba524. 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/ARW862100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6309f90205ef74d69fdfd004844bf1215baa6f4feec9ad97cf86f012a4c0916. 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/ARW862000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953f082f602d4323e5dd262cd36f13f62288890e3b6f87a5ea3cac77be30e28d. 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/AR7021700444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365071a302bb73941f86347307db34a0e594c3f3661fad1020766c2787666d2a. 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/ARNL72400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02e8b1786ce5e5a7cfb393ad3c2d3bb24c28fb043320134b0f931d3c0ed01c5. 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/ARNL72400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f58d5a03e9632e3d18e29e9c22696ec9f3360b8d44dcb90c509f9a8130bc0ff. 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/ARNL72400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95012b7d195c3972fe3063a9ab3a48c1185dbe78e50488a23d43bc0dad606fcd. 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/ARNL72400008.