Spellcaster may refer to: Spellcaster, a person who casts a spell (incantation) Magician (fantasy), or spellcaster, a character who practices magic Spellcaster (film), a 1992 American film SpellC
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 0xc8cf3fea59c9700793a7ed0340c820e204f155aaaef2abd9436bb0bc1ba4b530. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f28abda-7a6e-44ab-bc9c-d20a250b1d93.json and https://artists.proofprofile.net/proofs/artist/0f28abda-7a6e-44ab-bc9c-d20a250b1d93.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 0x91cb3be7e6dba30eb40a43cd67c58f4abd832908ce59e5d11746c8e65632797a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USERN1009372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffba640d20a5ebb55b0cf445d84d2c21588e4698a615a12417c1140cfcb80a2. 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/USERN1009373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22990dd5c5b338e46d03dddf759e6c34bd1c25dfa3435a6f7e40f122b2f4383. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USERN1009374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7591ea695b8bcfac04172bead353bfeb5cb67c5135ee0301ff9be726b7f7f0c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USERN1009375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8558909685147aa22596d1c84091d9239bdccc5f9287a28515a5a2f514c0ff. 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/USERN1009376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5a3d6aa55e748dc02bbadfbe717e00bdc39b9a2f782aea17334f6cdfb13644. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USERN1009377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108c61f73a32a33413ab050b242d2cebe26f03eafd86dde043c14c1c9c672ed4. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/USERN1009378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3d6de7cb6fc4be7d05fb655db082d35e7aba53ae8d7d562ada191e333bd59d. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USERN1009379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244ea9823fa703bad4d02809e9db0d5a99ad07ae28419fb5be3639a1dc6e29e1. 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/TCAFQ2106213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b30b8abd92bfcc0319db9d8a6c5bbe17aadf10e27939a23b442d865878c74a. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/TCAFQ2106217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3983207cd59f8b976936f71d3ba37c808c91f6deed7fe4eea05d5cf13abc89c. 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/TCAFQ2106219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fdf32181e419a773fdd61525891644e6bcfc35d3623892b48c503485629a55. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAFQ2106227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe808d2f2dc25cffd14febd0b39e7df6e2860fa40ea8710fc82418ce40d175464. 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/TCAFQ2106229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c78e323a8a07b1f34b30fb0828bb5bfdbed863fd145a06d87a26b55d0165bc2. 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/TCAFQ2106231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db27e3b70ba3908ca5eedc989db3455d174f15bbbcfff7422b3161ca023b4e8. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/GBBPB1201785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecb12f1b22fa61d599bbf9d62f4708c1141a9c77e7663be9db23edc81175114. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/GBBPB1201786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ba053dc20dffd98c4dd4879fb9c3339288814b9baa9491fda1e230c8bade88. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBBPB1201787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8ddb0ee28e656299b0eb49a23aec60075c1a4ff96e20d96d51d7134b7a57c9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBBPB1201788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa924bcebe10bb5d00468ee3f7f750ba7ddeeb03c544ddd499a0ced0888e8dec7. 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/GBBPB1201789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3677ec8901fa1c658c92110b91b44a29708762941e38a9fda7020dff8f0c075. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBBPB1201791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa5b7e59a7be878679a543415c114df657acd3d41f5ee0434e6b05f3cedf98c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/RUB522408114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3620731d2aea36639c16183023d09fe046736db519ed75ae04bc2902ff08a307. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/RUB522408115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d22699d7a10a442615638f23eb93781121c9dd160f0be2058d1070f18ee21d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/RUB522408116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f895e630adedfcfc90d4509eaabfe6414802954cdac2c05d0cf0f987a616bd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/RUB522408117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551efbeff050c1904748d481aa3a61d556252cd69c11943629eb77be9338149c. 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/RUB522408118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77ef7a9a15dda9a25149428617c8ddb0280cc5d8c94fb708c927100240b4c6c. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/RUB522408119.