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 0xf26a8247b6656c1e1302f0a38244afc4f727fc2d74785b6275ad4c7e7ca79b47. 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/3f9c55b8-ff31-4e07-a803-8ef7c19650e8.json and https://artists.proofprofile.net/proofs/artist/3f9c55b8-ff31-4e07-a803-8ef7c19650e8.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 0xf98cc360ec31151e6960946e3a4418c4cc809768e3b55ce5eb7b4088c4f4d7e3. 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/QMDA62311103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834d9ae9d643f05e85cf2d9ccb75a431da1e948d2043860c9674c3cb3291addc. 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/QMFME2324468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c9a4c0750219b0a3e014d2775001d6050d96a0e413b426261ff5a2cafa83b1. 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/QMFME2324469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0805e71e6082130e463f95a88a13f997938057e046dec25acf1b828fa2181fc3. 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/QMFME2324470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8ab448e1eaebe60d2793a70d9e9a3f461ad986b48fe8a5c05f8c4a4dfc07c4. 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/QMFME2324471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aa97036a86753c9c3b956073e0628d31ce90f690086b6c79f7fa79ce8cf21c. 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/QMFME2322094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868db945d952eafa7369a84ab83ae954df73ed78e7578e590a1e74af9f4d01e5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMFME2324473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5087bab37bbda5b9a943854067459205e9d6b9482cd5b4d413ac40f8ebadbff. 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/QMFME2324474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b82003b9e85142787ae6240238b43c30be505d61cb74c3dd4cbafac154bd0e1. 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/QMFME2324475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebc6d8c91004f72e19bb4acde1a7249cbc0d60f8413646a73a97eff15919994. 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/QMFME2324476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aa97036a86753c9c3b956073e0628d31ce90f690086b6c79f7fa79ce8cf21c. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QMFME2322094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003cba020d6ea3816ed75ecfb8c7d6f91e4628ee7a112f7c070882d74bb431e5. 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/ES71E2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bb0de5b1f042f9ce312315d6fba04829b466e047476d9d3782f45f118a05b0. 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/ES71E2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003cba020d6ea3816ed75ecfb8c7d6f91e4628ee7a112f7c070882d74bb431e5. 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/ES71E2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd523f28229fc92f498f4cb17f034074a60b03d5f4a95f0c609ce658be22d28eb. 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/ES71G2125084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd856cd4392bce5f550afa72a72aada7e95aa0f75a65fe044f91a2343963d2d48. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2117656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08789a05cb9a61915021e9e7cd903d252456dbea744e009b619027b66686ead1. 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/ES71G2058085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65877105a0957ae27fec701c076af4a367ebf1a4bb706fe70b9e2c8b334590c7. 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/ES71G2044047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241307d75ccc4e47c76acdf4f9207d83f133dba47e8918e58041783ecaf64ac7. 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/ES5701900620.
Only Girl (In The World) [Operación Triunfo 2018]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe987ee212e6ba05f6b248ca49f90cf60214e0d338c5533f7550faba7603e2876. 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/ES5701801237.
María Se Bebe Las Calles (Operación Triunfo 2018)
María Se Bebe Las Calles - Operación Triunfo 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf280b3548ea0bb9dbdb43b1e6780b258388a9b410207b996e49778c61701a2c. 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/ES5701801220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afd5b5a4c6aeb7df5a2d6fef0acec7522f39d2990f457e2abcc26229d44f5d9. 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/ES5701801158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fc7c39b49d29208c2ff51b616fd9b89d2644e8d968bbc8642162ac3373c48c. 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/ES5701801140.
Lo Echamos A Suertes (Operación Triunfo 2018)
Lo Echamos A Suertes - Operación Triunfo 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4b4906c0483f5c9147325a7997b360d5eed3a3d57adbf08282a2f0e3aae6f1. 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/ES5701801122.
Cómo Quieres Que Te Quiera (Operación Triunfo 2018)
Cómo Quieres Que Te Quiera - Operación Triunfo 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4f5f449ea7634a798dc114726ed4031464009a333d80204063d8c8e0164ef5. 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/ES5701801098.
Another Day Of Sun (Operación Triunfo 2018)
Another Day Of Sun - Operación Triunfo 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15756487dcf57d3f47725c76c7f111aa1a39a3a4e8f02763cfd4638aaf330511. 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/ES5701801011.
Alfonsina Y El Mar (Operación Triunfo 2018)
Alfonsina Y El Mar - Operación Triunfo 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde571b33dcca4f549613979378052e9cabf1a0c7492307ba9621b9efd4b4b77d. 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/ES5701800958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde571b33dcca4f549613979378052e9cabf1a0c7492307ba9621b9efd4b4b77d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ES5701800958.