thumb|The sanctuary at St. Mary's Cathedral, Sydney thumb|Ajax the Younger violates Cassandra's sanctuary at the Palladium: tondo of an Attic cup, ca. 440–430 BCE A sanctuary, in its original meaning,
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 0xdb2246eadd4a39e19778c4f8838aa216ab05d12c9e239cee4911be0859437ae5. 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/9b373e31-bdc6-4e84-b54b-5fafc83a23bb.json and https://artists.proofprofile.net/proofs/artist/9b373e31-bdc6-4e84-b54b-5fafc83a23bb.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 0x9179913a037afda367e4550e28eb13568dfd0f17a0f5de240d23f1e1b6476b25. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US4E41637901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9893ee51bba1953c55b1f25202ea8c820f0657b40547976c015c2190ef294e16. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/US4E41637904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb130593a7a9cbde794778b6d4f60a7faf4c6f7b44f2e3572f8f2096041a009. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USSM10026824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf241a90600ebf77f60c71e3c47dc5fafad8b2dd3e0acfbe6cdc2cfa708f88c8b. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USSM10026143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b26271d54f12ae5b804d87c762c880e9c193390cce83d3e95600e37512d5ae6. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/USSM10026139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66846f737989890564d3ee5cd140ebb1bbac11248c93b8755e23290384701088. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USSM10026639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f5fd37773107e53549fc5a1495b65a10dc17b7bb70e1951530fa8ce370f825. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USSM19000905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742d36c96e8de2d804e44fd7a2a80bc642c84cca5e83b5ff6b4767fd6cdc460d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USSM19000906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9977cf12c13cfd63d0bf74ea90e00b6079ed9522bfa876064caa1d1d10d621bf. 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/USSM19000908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76577cc930cb6eee52b04f001687ec7b15f410d62318de65be8a3d0f0b68122. 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/USSM19000909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccafea13f6928f63c6dc4849c00e02c7cd76602bfbb5690eebadf12de007dbb2. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USSM19000910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6855e54f84c3463659ed06933db7659915ecee4bc1d0543607a97c7b24046dd. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/US4E41403902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de3e1ef567a57accfac5a5e9ad23da8770ca8d2978bae472dbd1703bacd4a22. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US4E41403903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0899a22ad5413a3c3fda45c46740f689a1c5dfecfa2acb53a19158c89db978. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/US4E41403904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8b9059ebb357d3ae0f21f362de475598cd3876b42b07ab3bff3d57ee41517f. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/US4E41403907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808a30726f0e4d01263ac783432e0b5d379eab5a32c7ef1aad1b423fbe1dbe74. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US4E41403908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3500bb2c4645bdb5dedb73af0bce614d4a9a1b3e50db5423df3cab6c0662457. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/US4E41403909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088af75aa5cbb5d4f222316a0f108301875e647420ecad0989deab55eedd96d3. 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/US4E41403910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765531c4e7a0fe0d7f300d3a77ae1e680c9f1b8035385de6614d511aed3b01ba. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US4E41403911.
Into The Mirror Black (30th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659d4eb45ee246a161fa61cd3f2323fe0367033502278a98b376b3e695f37a3f. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USSM10026140.