Chants From the Holyland- Choir of the Greek Orthodox Seminary o
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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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013cfcff9210ccf8ec30e697ec8ac8ce326acf2b4b007f63e8f25741572c74a7. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71f2e5a9-4071-42a6-83b1-f0f1d8c3fe97.json and https://artists.proofprofile.net/proofs/artist/71f2e5a9-4071-42a6-83b1-f0f1d8c3fe97.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
CD 1-Greek Byzantine Chants-Holy Week in Jerusalem
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6090e766fa18ae2f0cf3579f2371da2f93a047c36393ad7167eb8008e92744c. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USA560317901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538f779add9902df2b118daea83c69ea2014bb474af8bb9f63351f71017d08f2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USA560317902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3025643140070a0927a1c65030dedad9c6fa0e731b54adaa1c11e24045908bb. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USA560317903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d833bfcb07bb4b2014b17f6f503e59da62467c27c3213fba8ffd38966ce389. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USA560317904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926f77467f236c579e72e12d3707361ac4a5a540b7b0ff35e90b722a778eb3fd. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:49:08Z), 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/USA560317905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1acb65fe205bf7687f4257ddf3f1b8bbca9fd975f551e6b480cbd336f74bde. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USA560317906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7dd59e134552ddddfb651914d6ef268f09bbc5c83f74be53aa6c56caf9a3ad. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:55:20Z), 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/USA560317908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24104106cac5c592769914ba7cec0e4fa64878383bd509523d5b78e5b057a1bf. 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/USA560317910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aac773b361911365a068131ebaeadf92adaa97b03afc319f30ecbbbea230b8. 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/USA560317911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035d13c589414584795025a6eabf13704d6d42374167f89b91ca5f658969c77d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:50:13Z), 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/USA560317912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2a0cfdd202191ac11bf85adb84a17675b9f4d6e6501bd1a108879e9149b84b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USA560317914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cec2470a34f0dc7938ad63c1e2265e5e25588b5318a5317ddfd41335f7a1c6. 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/USA560317918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe331bd3c5dd55ca942a9d1f00e5c62a2341ed5211c34b9d2fa67fa74a735b2. 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/USA560317921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de1cabe0cebcc0e0fb0d21014406aff0b47b103b17e22eda48fde4cc2858907. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USA560317922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fee38d42c9bda3a3169100766faa5de97b34aa5851ff1adc3a747ed49d2ba8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USA560317923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b59458cd6b358a58f8e165000cc6f69338634cdc3bbe923df30b807ed61778. 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/USA560317924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc965616127918d8f2fada510a71dfd6ac99918bf8168a6e69885cc7d672405. 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/USA560317925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0514ed0d5c590fb3d84bdb7d3ab6dabb56e0fd3f64164cd8cc9cb41d2afff772. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA560317926.