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 0xa4b80efb297390b4522d8e941ad98188001f6018870b353264ddb3d960b007d6. 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/e1c52f28-c4c9-4318-84cc-6c85392494bc.json and https://artists.proofprofile.net/proofs/artist/e1c52f28-c4c9-4318-84cc-6c85392494bc.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 0x79f60b8ddb00e4b0850219c2cc7526035e5c858fa0c6fcf48c1d98f9f443d81b. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USJ3V1856364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee38a7e7f4f3791d909bbff41224b2719aae577684a8478752e03a6851f4f82. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:15:24Z), 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/USJ3V1856368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5751d84123cd656a52cf09e2712b38677c2eaa7e46528aeb9ebd0223d5f2f220. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USJ3V1869599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daea5de691c894f990250f7bc3e00d5723ca77c2624512cfee742508af6138d. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:05:58Z), 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/USJ3V1869602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe212418695986ee046d089d4a3427322e1c7d46e9fc9bcd2e41a264c542c73. 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/USJ3V1869606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31df3f6d0ce42f2b5434c9952ebecb05aaff25f7252556016b4203792949ca05. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USJ3V1869608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a4f2b97bdccd2ece1fda81c75b653cd9ffc97773d7bfeb8615be17f4ecea26. 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/USJ3V1869609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08748c9d38c4e8b97bc82e1fb5ef9ae8deaa3de529f0e244dbefc0603ad72a7. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USJ3V2011650.
Transmision En Vivo Desde Torreon, Coah., MX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb18963935f78e2d9325ac9893bbeb88098d9aa41abd3514a70d0b117704ce9. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:57:00Z), 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/USJ3V2028767.
En Vivo - Desde El Retiro, Coah., Vol. 2
En Vivo - Desde El Retiro, Coah., Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ded8fce3d44b2d199d3b9b3f9676c54e8f3530eabb5adbea211a0299566b11. 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/USJ3V2309150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6162b9c1802d82e9dc787702bbc671e31081f6687f01bb5d4471366cb222c00e. 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/USJ3V2309151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae438852a557853df27e973972acc0b869414b9adc9581f75070ae75588aa37. 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/USJ3V2309152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7979b75c9496c0578932b401b1bb7f8a3315003326be4ab40bd2e9f3ad2ae3c2. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USJ3V2309153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6f2d5d0775f4ea8f3eab7c89eed3848f7e2235293fceae35e014a07fd68ef6. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:05:44Z), 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/USJ3V2309155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6843a1a69529e1693c01bc0e4d22545979ba783a1ec9e144dd170d3f3df024a2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTB72407342.
En Vivo - Desde Torreón, Coah. (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba20412ab745e890226b4d48f1ce6dfb668c37d868da04223b303cda2fb0bc2. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZDA52597342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d763f9d6e085f801fc02f94f89c6f64e68565060b96ed724ed2d55c87c7af15. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZES82576204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba9144c8adc86885c57747a6e650acccd0ec769d104b0b6ae803213b1d13474. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3FE2546816.