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 0x778e2a1c084f7a193b9e0b2e7284634228a8475231520c7c57ae650a3bf63f93. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32f9b620-76d4-4744-aa01-e4240a09719b.json and https://artists.proofprofile.net/proofs/artist/32f9b620-76d4-4744-aa01-e4240a09719b.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 0x58a54ea373c2eda2b84b0a5a21ee0a422e5fba7dfdd4cea31e5cfe0d116098ba. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:06:47Z), 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/TCABK1221911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c06296a94375c324233aa55b46a8e48f98bc6f8481536cb173a7ef4df235cef. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCABK1221912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e75194d44fe840698a9941b15eafc9f1fa5fa3a7f2a72ad946b4ddfaa31fa1. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCABK1222267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a8820f81747ce34b108a8cace1982ed022bd7f38465ca5bdfc04a2672495f5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/US7VG1520594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49043f7de824dc475ac45e68d4249ef1e0a99bbb77c4f4917a360d63d64198c. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QMBZ91975799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b52f21b93acbc3cfabbd1353b2e2e95b6bb51c443932728b5156ea25f164620. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFME1918854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be985adae36c4a58991fbfbed05fc8728c6d7ac114db4288f7646c5876596fc. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QMFME1946537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6bf096b4de369d5bf3e432414ab323fdc502ac747631f154ea90aa2751f4bb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM4TX2133193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ff569765b813590f60ad9c46bfe41d31816d428cd502a660bb97ae101a06d5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM7282125816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e5ecec289f3b9cdcdd5ededf1ffaea1d2eac0901a23fb9c34c2e16f06af50b. 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/QZNJY2282870.
Sammy el Heladero (Los Nuevos Canticuentos)
Sammy el Heladero - Los Nuevos Canticuentos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0e5e4121f5dfa838587c82693d84b2b78ac97498933b3b8c801ffae209cb10. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SGW502599623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6973e66a96fba13d273dff965386e932c56b95ba4e6a790986e5eb614a125cfb. 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/TCABZ1463976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbe882b6437a5d43bbbdf39d4728db269dfc87a4e8bef6c2774d9df13a812c1. 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/QZ5AB2048521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0e5e4121f5dfa838587c82693d84b2b78ac97498933b3b8c801ffae209cb10. 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/SGW502599623.