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 0x733f248ba9d446b81b698fc6444d5ac5b93fc516091833c4cb4fe1fd0a1df65a. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c14b1675-f26d-48df-9429-5a47ea80a836.json and https://artists.proofprofile.net/proofs/artist/c14b1675-f26d-48df-9429-5a47ea80a836.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 0xbf25ab302e0619e978d190c67043f97be287d04b9b671dfe94dac249477c27ef. 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/US2H50010012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe666c73fd5355c5c0bb10ff8c8b615db0a8a8fe2379d0b30347273e43b5f5e7a. 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/QM6N21591178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89d9c2976b88c21d230110075f444158f731e59352893a5aa6bdb9b3eb9a696. 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/US2H59910706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802169f20e1b06e48e842ff25ce50c0786c6a81879fa04cde8fa12eccce5e3d4. 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/US2H50410208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2e1a7d1e827616668536060a8110f8f97a8f6a2ae06353a0105cfcb646c011. 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/QM6N21591197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6daf5155733c89b9be9525760653b04fe3a165899146c1aa67be1d44f7d490. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US2H50610057.
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 0x58036a6011a8a954ea859f96711fc26e9552aa750a9687bf0013c7f8a496044a. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/US2H59910702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad37a2648ab5b6a5108284053e40473905118c64cb774c97c5f27e43ec77a39b. 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/US2H50410000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66b4fee525dbb7a03123097b288fb55dc70a1118601426e6581e7fa894f0374. 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/US2H50410001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28260525c5dc60830894f0fff3dc76b5270cbb823cf863dc7c371481cb402dbf. 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/US2H50410006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7585ac0ac0e37c08b51c93b02cacaf86ab4a93fb09c1104bcdd42050e646d6f0. 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/US2H50410008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d799dcb9a7d43b8cbdb105dbf43d00b52bb7b00f198616a5a42ecda5fa193c8. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/US2H50410002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59b0316b008d98282827360d8d3d3fdae2feaf374337ffdfda90bee7b93b4ad. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/US2H50410003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e30f430032d913253c551e0250ea3952f84bdc9a8e4c3920269c483145432d1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US2H50410004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ad5b8545e5db44b9f415e4bd0f12144d51d606e4b36edbb9e8630d73871ab7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US2H50410005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02561450f205ddea1b830d0037eb7cccf9ac4967baf96a6470391437b787cff. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/US2H50410007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b64f9bbc229ca3ae46ec603574ddf3c973eaea26810b6ff33c2ae954a6bdffc. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US2H50410009.
Chill Baby Sleep Music: The Most Relaxing Music to Help Baby Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b6d7d9931c6fa6476447f28bcb7d370e835c6e0b60a1f0302a18fc6d86e18b. 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/US2H51010187.
Chill Baby Nature: Meditation and Relaxation World Music for Baby's Rest and Peaceful Playtime
Chill Baby Quiet Music: Soothing Sounds for to Calm Your Baby Down
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a0474c430b93780066364ad94bca72186d6aa03179a944fd3fcc75ea65f8ca. 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/US2H51010166.
Seville to Sante Fe, Vol. II - A Spanish & Flamenco Guitar Anthology
Chill Baby Stop Crying: Soothing Music to Calm Your Crying Baby