The grizzly bear (Ursus arctos horribilis), also known as the North American brown bear or simply grizzly, is a population or subspecies of the brown bear inhabiting North America. In addition to the
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 0x3ecb921f35238648334ca9b06afadfedef31613cfffceb41b093df56af1566ea. 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/85631517-0b95-41c4-b086-7a5a3bb3dc5a.json and https://artists.proofprofile.net/proofs/artist/85631517-0b95-41c4-b086-7a5a3bb3dc5a.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 0x568faaf820fccc8e9866125760aef1de487ac9b924db9ac3a5e9f5c059c541a5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRC11700981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abbc33bd79fc96cdfa9664afda5c7fe2f3d99ef1272d3a3cec1498435a831ad. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC11700982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5430783f4d323921115e1e1963408aec5b5e205e5cdcac6d9d13fabcbcd588d. 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/USRC11700985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b9172b0b8b51f611dda15ddc195eef6674e5b5e7773ea36674c4145fce8e90. 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/USRC11700986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12b4ac355f45193ccba842dd41e7395ea6fb5fc5ab1d62116272e4566eb5427. 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/USRC11700987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bf6817d4a48d6b8c697e56f8ff2eccfa9514d86a532f9071ef8f8fa0b94aa8. 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/USRC11700988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5321885b6ef428a55ae63010afaf046784fd32ad8662938ff396b1a9cfb0589. 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/USRC11700990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6144b9b5d09b3f8be6c408a60f6c17db7713303aa4808bbdf0150ae261a5a1a6. 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/USRC11700991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa8b76150a86bee36da91b28b412e95e8fde4f94bd490ee1139a6bd329255f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacca81695e0e55ddebc9e60f00c13ef0b7129f0e2ab352a3b41733665d87269. 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/GBBPW0600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3258de6c61ef95b3ab534797dd993c398ef27622e86ac78abdbf3828616dc051. 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/GBBPW0600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030aa9dfdeaaa4625ed94d0fbe10a91cd28ab2cf8c343bfd20f27952ba589078. 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/GBBPW0600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3cf414606d2b274010ac8d8a3b6ab37ed9b73a0c145f67245171cec1dce0ad. 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/GBBPW0600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38f4d4af32f8e27878ee8dde1be541ebac6ece4aa04ad9f825943620a3c670c. 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/GBBPW0600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765fdd40e7141c41b9ba233e950b209658e9c94009aee40071b81bc2da9f5440. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBBPW0600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b2f24419a702fd0263bc53e62d2bfae88e632a501d3b389de8b2a0a5586f7a. 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/GBBPW0600047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b96c154542459b63e4d25d5e96e1f1df779da673c49eb84bfb2e7d6c0669ab7. 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/USI4R0602420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8b53bc419667d52e3de01016010ba6c50d126107ba43698cb2327395771955. 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/US28E0482002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32027909275f7ca6ea84f9a713fc1f90f81546f0e7b4a8061b144ab378346b62. 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/US28E0482009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abbc33bd79fc96cdfa9664afda5c7fe2f3d99ef1272d3a3cec1498435a831ad. 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/USRC11700982.
Blue Valentine (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb5f54e9edfbeee9db2946ede2667aaef8c7760a9438ebd19a7375ddd6233e8. 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/GBBPW1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2562e710c8b4dbd3ce69c01977c914b654304c0b10e553855a3ec66707a852aa. 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/GBBPW0900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071961e8c4cd3c651701ec700fa6ca8a7f7909b80f9a50a60455d843c3fa44a6. 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/GBBPW0900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928d7838521c50460e28e85d3f3ebefbc8615ffe8af6d75e4d018a9e257ec1e7. 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/GBBPW0700154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803e25ec3052081713c643307d5928a55baf85373b1a1f0fc0bd1eb86b9c771b. 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/GBBPW0700155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f0125497b79996fe7e9c445f5fc2ad9cd740069f6a9a698e7f3ac52c49e681. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0700157.