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 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 0x0a5258f8823c16fe5caf1358e29e9fb1f57f8c18b0625e16e35871ae9017f708. 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/e8dfb2fa-0c4b-4af3-8f1d-ad74d7fcedd1.json and https://artists.proofprofile.net/proofs/artist/e8dfb2fa-0c4b-4af3-8f1d-ad74d7fcedd1.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 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 0xbb674c668b7ab4a697c2d06fc4e029ba239728c9e5a52a65127c7209a2cc7480. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/SE37J1504598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3334a343ad75ca7f3fd1fe4a19dc59b1b9436219d05bb1de8c5527e03115d6af. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SE37J1504608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2271d83ab3e31db12f523d0ea8e35982a46e2cedd95107dde732c86980a7dbe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE37J1504607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa55a266ff49a5b0282109747181702a5f2d99a121cd22d76b4a5540b6be2ca. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/SE37J1504605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9579a58405c7845cbcc770387d2d196a33886901f8114286cf46b260b712533c. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/SE37J1504617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc657bdb6266503614c44ec7c58d3c993db9eae72723ac4ed03980a47650ed0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE37J1504596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5265f52ce7a983b3e8a92978e58b14223022df0dbe7d0c22f8b8c86fcb204b53. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE37J1504611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226c96af32b99ee5bf0a4e0c71a4440d549067fe4b456cd96dc28c8aadb3a29e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE37J1504601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446bec60d816a86d08880ada352de5b240e95b26fecce80bdc1476a2f69f2197. 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/SE37J1504615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3334a343ad75ca7f3fd1fe4a19dc59b1b9436219d05bb1de8c5527e03115d6af. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/SE37J1504608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2271d83ab3e31db12f523d0ea8e35982a46e2cedd95107dde732c86980a7dbe. 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/SE37J1504607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa55a266ff49a5b0282109747181702a5f2d99a121cd22d76b4a5540b6be2ca. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/SE37J1504605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f00f1724f054fe4dfe3cff6377d3b8ae1cc40e9b9f10858ca0c8b13a4f959ed. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE37J1504606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52793debcf4ef72a71015b221c4792d6c91615048bcf433e6a78188b949033f4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE37J1504599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9579a58405c7845cbcc770387d2d196a33886901f8114286cf46b260b712533c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/SE37J1504617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f51c2c764dbd70b4dd18f9b39b0a747d831788019e1018f33879a8eede35692. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/FR0W69992452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976a12877011aed5029595cabaf6237d69e9145fcb708ee7b1797b6c8aceba76. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR0W69992455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabfc003650ce1edb5f428aefe086cf7ed9b413b831664c96fe0fcc4976c1498. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/FR80T1200507.
Highlights of Kids Party Music Players, Vol. 1
Bored Kids Sing Along Playlist for the Car
Disney Songs for Party and Playtime - Guitar
! ! ! ! 17 Album For The Children ! ! ! !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2271d83ab3e31db12f523d0ea8e35982a46e2cedd95107dde732c86980a7dbe. 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/SE37J1504607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa55a266ff49a5b0282109747181702a5f2d99a121cd22d76b4a5540b6be2ca. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/SE37J1504605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f00f1724f054fe4dfe3cff6377d3b8ae1cc40e9b9f10858ca0c8b13a4f959ed. 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/SE37J1504606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3334a343ad75ca7f3fd1fe4a19dc59b1b9436219d05bb1de8c5527e03115d6af. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SE37J1504608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa55a266ff49a5b0282109747181702a5f2d99a121cd22d76b4a5540b6be2ca. 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/SE37J1504605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2271d83ab3e31db12f523d0ea8e35982a46e2cedd95107dde732c86980a7dbe. 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/SE37J1504607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3334a343ad75ca7f3fd1fe4a19dc59b1b9436219d05bb1de8c5527e03115d6af. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/SE37J1504608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445fdacc197c0ee83351a10093e502d3f688b8d3ebfb1d0b553053f46daabc9b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SE37J1600407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa55a266ff49a5b0282109747181702a5f2d99a121cd22d76b4a5540b6be2ca. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SE37J1504605.