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 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 0x615f6ff18e953e1178b7de55f179060a5df3b6a7f09e4b5799dd3f69f2304af0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/797119f9-3869-4695-a951-8aa70c383be8.json and https://artists.proofprofile.net/proofs/artist/797119f9-3869-4695-a951-8aa70c383be8.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 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 0x60ca893d4933806533f1d44e4a41400240a14918c9ab038611f9a8546575784f. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DECY52101501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8f3e15917be78bde468b07ff813e8c35f14ad3b8d0251f91f0382923efb32e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCACN1603233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471433e4dc3595a91d6b3f126eb82adc7bd19dadcfe09c0b5b19ec4f60181445. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCACN1603235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdace247bd68bcd586c152793780bed6e14e8e9fd2c4ee35e681f7e73af455571. 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/TCACN1603236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e96592bd180280c88c1e20b58c93edf181d565d697910b598dc1eccfe9f16c. 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/TCACN1603239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6feb28f0bc406fa4f5bf5984336c759f09f7b1c8f44ed850e6fcc7db6cf0080. 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/TCACN1603240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d3cbe7c75fbab478c6297d6d67f1b3cfc9c02f59f9e484ac725427133b4d99. 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/TCACN1603244.
Aquí Mismo (feat. Afi Ferreiro & P. Lopez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039edf84fa1447bb33dfd8c6866463edc96fd29546caa9e23bcdb02487439be2. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCACN1603247.
Todo Vuelve a Comenzar (feat. Pablo Garcia Blaya)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00451f825f9358612a0babecb5a921a96b7e823f74eea750b7d6166602490e4a. 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/TCACN1603253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c14b4e44bbe560b4a5be53318c34a21091e8bc6ad319fda4aa749ac70e2165. 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/TCACN1603271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe68a226c3a6db9c73e63bb7d4e687311ba8ca1027a2be89f7ccf137a2870fd. 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/TCACN1603274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a55778f92f6c15c75e57d3fbc1e1c17bb4cc8666f4e8c1a9baac8264ee04fd. 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/TCACN1603280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e86a983a8329d71123c0c15e6b24c08556f1a86f448999102b5db0c7120b96. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/TCACN1603291.
Al Amanecer (feat. Steven Wu & Javier Zacher)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed3651f90e0fc80ef44e09427f824bc132a8d14e6dc30238dd2f69c4401c96f. 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/TCACN1603293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6aa3d4f6aeca057b898eb0eed4683e5bb7ca7624455934c2d05a283fe6a0b35. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCACN1603296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926051ce1eb28490e960f5f76eda8efccf190e79a1c39285cc3f9f855abfb5fc. 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/TCADD1712281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0373515aa5fdb6af9ab55f2f4b72d8593b6b00fbcacca47a7c6af6a498a134. 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/TCADD1712294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59259827563cde9ddcbe4f2b95e60ad6516d52c60872ce58bbd6920cba49a09c. 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/TCADD1712320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d77a81fc751e244057309a830e98abc1274fee8c5fbfe992cbac60dc17e5a14. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/PYLPZ2100013.
Stream State (Selected & Mixed by Inland)