Care Bears are multi-colored bears, painted in 1981 by artist Elena Kucharik to be used on greeting cards from American Greetings. They were turned into plush teddy bears and featured in the animated
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 0x07cce3a2efe28385bc146470a09ab04a9c002feaeff76413ff61c4b3160b0245. 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/6de16a46-030f-4f30-8814-596e53b11f2b.json and https://artists.proofprofile.net/proofs/artist/6de16a46-030f-4f30-8814-596e53b11f2b.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 0x988926a3623b2d8b059bacbb43360c69be11c596534a4c4d5cfd3e088f1696b5. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/UKP3G2002378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033d234f2cb03d090753caa7d4b8d1efb100fffe85d31c4769b091984ba27e10. 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/UKP3G2002380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7edb249f47e857e12a5c4a654afe714c94922db5d79bdfa652f6d166f6fd5a. 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/UKP3G2002382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda77907728d92d80bc708555500633bde8d4a90d3cb17e7a0ace687e1a87bef0. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/UKP3G2002383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463bf6b1f4390df1bf2eac56679fce3455340e2c8cffdafdfbd8a2e6e8fb0d54. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/UKP3G2002384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a98ec64c58202c24880f4fb779be2b9b2488c007f20365c0f6f9cc9b390de7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UKP3G2002385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3793f2313e55ed3841ab964c283b65c1b353cf6e4698b10f89788dc0131f09f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKP3G2002389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5c97d18381efde93c88b99149e102dc0c0ff1b6193bf697f5d39bb3a4ddd83. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/UKP3G2002392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4af861a67a8fddab8b40f787b313887d3740cca672b7eee95f75f82911fdd8d. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/UKP3G2002394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fccf7b7423a0fc7f2022727e1b16923c528c94ff167c79f3a33239ee7c57964. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UKP3G2002395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde60e36955f36efeff73e07d1b7b27bd1b515802c9591d7d68878134c9f5fe1b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UKP3G2003439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bb876cdfce2623d1374cbac2e9efb0889a542e5888c71ebd2d141ba1a019a4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/UKP3G2003441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75dbd42c3fb83480279215ae617208b86d846b0c73ddbe5f59c60fe852895d6. 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/UKP3G2003442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab657f3e13afe352ada15fda0186860f77310cd1aaccc10c61092055afc57b6c. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/UKP3G2003443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3eb52c6321277b15ed1f7cd86523499fad68d5386d1bb90e2cc75c21d918d44. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/UKP3G2004702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75a0a68419d0da8b3c4bb9e9183381684efa45aa1e693f3844e8cff2d15d2f6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/UKP3G2004703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b13486048cd09552884dae169d18a371064e2a28a40fcb01abf65422617240. 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/UKP3G2004704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6049a0b6403eca48204570b207c6f53bfe1e3e174bc1e9afa35081af22ab4a83. 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/UKP3G2004707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc3b8612b888186982588d7b0e9af3d47354bcf5eca87a49a645803138da134. 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/UKP3G2004708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95460d2581f498f36cad66fe72ebaff0a97100ce53f622515b6d0e6eb7da15f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/UKP3G2004709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c689bf9587459c896bc479b1740e577b055d7435e18b56710d747c8e331216. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKP3G2004710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6540364715a0c90198466df9f75e3f9a838c8e07ec51b9068ea4f48507630f. 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/UKP3G2004711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68067bc3dea0cb876c2a1f7807b98b188e956c6ba2e90ec2453b451fdb7eaf3b. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/UKP3G2004712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e21fd69ab3bcea88b818d97db600ce618dd698d63dc97077df3739f4d80a3c. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/UKP3G2004714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84affaecd8b3f359e70bb1d07e37dc006b7058a1a498e9af3ed59f7816a18cb5. 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/UKP3G2004716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab25aa007f4975cdd1b5455243b0164c5a791f458d5a6cda4f4da2f46fb950ac. 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/UKP3G2004717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57647da55d0afa66df2ec7948c8c4e98d3e51bafb66cbefc08f386ad9e4c806. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKP3G2004718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d045e5e54babecb57442c9bba44f7e2272cb15eaee3cf9a88f899c2a9e33636. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/UKP3G2004719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f4632a23232e3aca59e91f4bf2ed702840908b5c991fe2b9e797a958efcf1f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USACX2302316.