Cran may refer to: C-RAN, cellular network architecture Comprehensive R Archive Network Cran (unit), of uncleaned herring Representative Council of France's Black Associations Surname Chris Cran (bor
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 0x9c0e62b457d7e6021b64c81a454de7d6b422fec19f86482e03c12871e68d9e52. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62a41497-270c-41c9-ae49-4f710d2c263d.json and https://artists.proofprofile.net/proofs/artist/62a41497-270c-41c9-ae49-4f710d2c263d.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 0xa9518ffefd5589fc6fc8bbf84e41d6b83df41b5029f4d62f4ce026709fe5532d. 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/QZFYX2471081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc61446854b92966a908f484005a12a1c804d457715ecd799cbbaefa68ae5848. 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/QZWFR2324554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26680ad39816ebaf55cbe95fc6ec07351fdc4b5d5a30c5e879b1177c8e1241db. 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/QZFYX2471082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac356ab8398c883cbe10f42be7f3711024ec2bfe71e5381498f47756a24be00. 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/QZDA72392759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad1026dd6d5db9d147a32e6058a06cca12eecf893412b503a66d6372b233e5b. 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/QZDA72392760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a6138e513e5f2d7a89a9ef71c6e0cac71da425dbf25bef895a96aa92a0f868. 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/QZDA72392761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d096dea4fdf9e2fb844df48b255226c3a952e9049be8568b80eb8b2b14bcb2f. 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/QZDA72392762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de228dfe654ef37cc97436d89e7c193b29be006d853d3e3c2a23e7fdee0d2db. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA72392763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2033b0413e40f903659c3dfff2775a8640000424d515a18c4ad090a0c9bc65ab. 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/QZDA72392765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7c0efe29f8528092bc2b89ecc5036cca033bf136535b3752454385c00bb1c0. 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/QZDA72392766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419876aeafc1bd554a3ccfe215a5e7494ae7195f06f126196db1a0ef91944c54. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZDA72392764.
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 0x0ab67dc971721eafc45516862c50550ab337f23ffaa8c35d28d5e877d0a3f9a3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZDA72392767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e14311bc2c8b26efff44315222a679560f40ba32c10626286ba71c7716caf8. 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/QZK6Q2457350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b5a3eeb807d5a56c04e49b1766ec4ee776f26796779289d8aa10d0af4e4a6c. 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/QZK6Q2457351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c9d23efa7808d09ea9fdb6dde835aa87d531ab178fbf14adf04755070839cc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6Q2457352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3f295f84f8e7481883c1fcec063c896dfbc2412d74173e36aef48ab613d698. 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/QZFZ52024752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf78dd6a31bf6417f0cce6ff1bccddae20e8045c7f216483e15906021b67408. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZFZ52024750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd986994e3d08f5ada9731075a06c2f4be1e11afa9c98bb6a52ae20d6e4b929a. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QZFZ52024751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2b83d548a8c17f936cfa7dd9be505a36b47ff68b3066cf42a2fb8edb37ec7d. 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/TCAEL1941066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9936f46b5e6c4e6dbfd10b38a61c35bf398471c68a7730eb2db936db4a452fd. 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/TCAEL1941078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33d0fd8862cb56d18d2e40316977af2e073d9b256f75bdf5b803b2a8cd4d388. 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/TCAEL1941087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539d36c1ac3f8f5e526cd6dd08e76a2f3de4fb71acc2b2b8a943f08e061e7862. 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/TCAEL1941095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4349b57b241b071a760544f3683a6f947151ea59599afdf20f4099dda9c9c623. 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/TCAEL1941109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa197fc87e126d2e6b7a13b15633f8f6832e806b16e556ec2f41cc2e09aaa8a. 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/TCAEL1941112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85debee059fcce86aac4fc35160541fce6d9519d9aeda9bf9e8eb1d79b682a19. 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/TCAEL1941132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc918a7ecc0d1574aaa2c8adc8a210fe07ccf8b6ed2006bb06f056150a364cb5f. 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/TCAEL1941217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b4760ff16b4a1c3e71a8cb20454f4d3553aec543ecbd43d6f78ed5a9b88c11. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAEL1941225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae77133370777e46ce9e1664b798cc2510c746fae76e0d30914d96776541bcc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAEL1941242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d16effe583fd011a4d92cbd21fe8bf60cdbc8b89e3f357bbd4214d6d0333ca0. 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/TCAGL2240835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f66cb2bf008b0fbd4b4e53225c886e10c668c53a0843eb51f6ee956bcaa8447. 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/TCAGL2240848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3e8ab5cb8d8add2586323dbf11f69f0487b552f09fdac1dfe634d2063dbf5d. 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/TCAGL2240860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc734de5f9219c79a224452d65696d1744bd947720b9855aa3acf443b728a210c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAGL2240867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacd69318b569cff157356b4a6d5754c9e24f19edcecec1ac1dbd6658e87f9e8. 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/TCAGL2240889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfebe1119766fc947fce15264511d13281833e929ddab26c35ae759fdd2f219f. 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/TCAGL2240896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fafd068a243b8adde8891e13f8f51653e9ea70d48a1cf24ba996e198debc003. 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/TCAGL2240901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e00985c385f0a3145675dfddc564f2530823a24a95b29aebd2b1256dc8dc7f0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:28:19Z), 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/TCAGL2240923.