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 0x3f11fd8b1722e6db477e97569ea8421eaa4ad78e62c101c400817f4a5ed8b475. 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/6922d3a7-aa02-45ed-a4d4-f6af5a7a16e6.json and https://artists.proofprofile.net/proofs/artist/6922d3a7-aa02-45ed-a4d4-f6af5a7a16e6.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 0x5e4bb5df426fe92f5bbc0ee67429051bc132af5e20de1fc2d7d2dccfc21bd191. 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/BCRVD2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbe6fb30455fa2525516a2ebf2f6cd0dc820a33c6eb0c94aee2c20f77e93a28. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZNJV2302551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27937c4ffd5723f4149cff9212361cbcdd6d523f9a0397388d2fa8ca5a214a5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZNJV2328650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f29032115616901dbb387d441308128422021a39a1607906d0a23704d7963d5. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BKKDK2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb84f39afc1298aac8d2c35680aac7ab1f271aa2e50beb5bdb3a100ef1445adb. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BKKDK2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f8808af8647fd8936bf8c6ca770065a83a37b5ddefa60b63addb84a53b1394. 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/BKKDK2300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe367c95df783582bc202dc766683b3283ff66123693d767e09ef462c226f6241. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/BKKDK2300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abe0b9e8dc32dfa6a2c8c97c97e282eac0715f3f903c44bd5232b740225df10. 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/BKKDK2300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9170dc92e2aa6893bd53e128943c07cf5db376261284d4e2d470b37f519c2af7. 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/BKKDK2300645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc04d47f88272e6571e52fdcafedfec72569ff6e0243953a00a3c66ba149c95. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/BKKDK2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa3600aadd53737d23af6267e0506c07c9c12e67d08eb81f7193feaf5d79546. 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/BKKDK2400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdcacbc7c287d1d746eeb90fd016a76ccc6609e4a4c63df6e5b3dd936eff60e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BKKDK2400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf55ec1ff5f87428c53a6f6a377b9e89109ae1756c93e166effddef7df4b7c9. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:02:49Z), 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/BKKDK2400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35daeeec94e080c4ad0187d6eed777f44cab60d905c7134dab88fca358165e3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:04Z), 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/BKKDK2400254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4b0b266b35e8ddcfa3f6ce6be8fc358a711a49d36503edce13511427b7bc4a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BKKDK2400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdc1d98b5fc9c961ae91bbba0a7a8407d1d1d5fc3793ff1ec9b868c548c7c70. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:18:57Z), 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/QZNJV2310984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca9251d12434eeb3885a7237f1356b7efa154c87c0f0bb978ba329d02d01d18. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BKKDK2300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960223493ea7ec583963b6d7ae945ff72a78e35961caf4bf68eff3833acb6a7a. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZNJV2328232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f7509f5300127a336cf4cbaeabd98af793a4dfd5ccd98a101622abfecff510. 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/BX4IU2418250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb442ffc3e4b542aa6506d9209eb74a2ea3ef6fe738136b1983e7cb838d8a23d. 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/BKKDK2400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b13268f20b0275a400d94bfcbf68da70890c61ec9e8d8e15bc402e571b81e7. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/BKKDK2500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5349b6218d88aa0e33fc6c7cf9940b666a15f1835111a814aac9f063342edb63. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/BKKDK2500081.