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 0xdc456660c42a91a3d02555a443f12b1c2e8de0900b4741dbfea9dfa2e2bdc007. 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/e8a6fc69-18f8-47bc-be99-e8db5bdb3b5d.json and https://artists.proofprofile.net/proofs/artist/e8a6fc69-18f8-47bc-be99-e8db5bdb3b5d.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 0xbc871ad878c132f568bf24e3b355a10de06a81e5cf6814dcd26c08c17cdd3fbe. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUNUI1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0443d6f146fa040b64dd7b64cfd0c76ff36c005ddb839f74a94a3e0301d5ddf. 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/AUNUI1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f8ae87b324c66574aafa58968801fa44beedd7113166e8a918a45cb5b9af8b. 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/AUNUI1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f5fe8680aadd9c813ce6fd622c502ed8154b6e4df1145bf103569b2097bebd. 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/AUNUI1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d112ea8b4718e33ed0c4cfe09df723da2c877f44ee1b4a9091eb464297ac85e. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/AUNUI1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf305fc4ab1c479de95de4fdd20f800863cb2854d665d00db6db9330d875cf9d5. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUNUI1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5994ef4354c58557fcfda0a019fb2ca2eb067937ef9c2ae1c62a0a919f23159b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AUNUI1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe262cfff8e9344c4614fcf9be66a68d077c1bea7d0309545a3975e13dafb01ee. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUNUI1600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a125626ab03f542b5db19303cdf8054bcacdd04825011b4edb13d660e8fd5d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAFZ2298484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f11df79f70c48350503cc28e533a666641e6492816e9c4ec3e71d426741151. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:00:37Z), 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/AUNUI2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbf148b5af44e12a1aa0cdfa1f9f3ae79bffb05c7b279a9d18a750865dad579. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:36:25Z), 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/QZNWY2413192.
Winter Clothes (Head, Shoulders, Knees & Toes)
It's Lunchtime for Kookaburra and Friends
Let's be Paleontologists (Looking for Fossils)
Pirates Looking for Treasure (Follow Along)
Instrumental Tracks Volume 1 (Nursery Rhymes)