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 0x04c9db8cbc424eab3658597845c40bd46b9f62de74f6a6799f3a51902799357b. 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/637b4b82-fd02-44fd-89a8-bb5fefd0ed52.json and https://artists.proofprofile.net/proofs/artist/637b4b82-fd02-44fd-89a8-bb5fefd0ed52.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 0x52ab9b3ea781443811f03053e2917239c6cae6f6dbed3d9cb1a5a3edaeae3784. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZPJJ2100441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f8640a9aca655cd4cd18ae7a49f6ac62d3b92017764cf93ea1fcf9f2caa132. 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/QZPJJ2100442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878a0742305725ea8c1c8873b20eea39c211fdbb00f66b3c8955e74cc464c2e7. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:41:06Z), 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/QZPJJ2100445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6f3a7bf378f38fc95c3195263e32eaa4975b1706f20164cde0f1670c7ae2f6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZPJJ2100446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee77f99665c13baa47ca6f8de4ce605695335882baf1a39f9f17bccaa1a03eaf. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZPJJ2100449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff12321efb4a690655549e7ccafffcebc4c0083a6d6cffa9d536e446887cbed8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:26Z), 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/QZPJJ2100451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678e1ad788f83697d1b943a3cb74a8a61e584ce0f31b0e39e25d2bc458bd4d24. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZPJJ2100452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d6f5c04e4b46db05f4de1caedf29c80f0630e20384dfd292fcfeb2150985ea. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZPJJ2100453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a73184f346a373ec8a160c97cb3c395beed794cab0c6e73209f6bb8db7718b1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:26:17Z), 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/QZPJJ2100474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe6bb477513d3f657d5487fc6de300da2f10afcb4b654c4d5ad8ed7b273d5a9. 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/QZPJJ2100475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088e65eeae10fdbc17e263d71e8143f0e3113b469d69bcb68191babad3fd8019. 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/QZPJJ2100476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f0ea76d0357266e77850e33096c0efad8feecb0b6c959d81fc49cd4cce8061. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZPJJ2100477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9d97726aba4c2c574e3d92dae51131192afd2540eb6b07becc1eb8440f8901. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZPJJ2100478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709caf185ecb93c7c8ab86255dadc4a6075f5450ac23c9afd5cbd40db6c1e83a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:58:05Z), 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/QZPJJ2100483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bab4000fc4a955015f471d22c493eef7bef7f51b68c45ed78fa90245e205d15. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZPJJ2100485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185fdcdf90a6e7e3ab34aed37dfed306fe79a4ec0e8fb74a2f9182e0e52155ad. 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/QZPJJ2100486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc5d9df53d63f09c143f8fefb150a6403c0250070bf763e46c63007b225de00. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:06:12Z), 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/QZPJJ2100490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44f99b0c7b3dd3c57ef7ee92a559c7d697317c380d93f5c1cb329664227c805. 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/QZPJJ2100494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8044518038b82922e97165b7fba60c6343456cd6e8da0ddd6f0394abc6c72aa7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZPJJ2100497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e87ebc4d45606b42527a0cdbf14f6be9350c922cd676557e4e7b5381518f869. 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/QZPJJ2100498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50e8e91d13d8ced4090c27cc29ced1c651dfc44d10e0a3073ad90a2f2082c1b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZPJJ2100458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b48d419f315e317aa84e4fe6388ad103be23223e7533c8cddcbb4ffc0873339. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZPJJ2100459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9925e8d3f7f487824bf68df89912e74687a505c9a17fa10375794d546ee1e16. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZPJJ2100471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3a8eeb0326fa3160b1e6b668ca30c10acea2e1ac2c74f253182d009c177ef0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZPJJ2100473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099c2a6951a1f412dcb8b026670678032a4bf493b32a597004c70ebd8eb5baa4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZPJJ2200244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17372e12fd36df4338bfa7d8dcdf18d8e0d8c35b6969895a3fccfeeb17a80a2b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/US3SK2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad07e003bd309b9d0738e2253cf0d71a1ade666117d8b00f02eca7ebda0bac16. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3SK2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b77418d0eecc086518d27ddd14fd6a38b9c4655e7a346021f9a1240375cf1c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US3SK2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8390f7367ab529d11ea28fd982435ee5ec3ac75bf0afa8561aee67c469bd50. 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/US3Z42104125.
No Me Corra Cantinero, Rani Session Op. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aee36e67c085dbd2cb0a8fcb7c374c34e6013ae65d7e5cdfe370cc3076a8dfa. 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/VEA0E2300006.