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 0x5903102cd09a2fa99aeaa9bc812f77fff2355a10b6761ef0b064b89f0adac306. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37df3874-919a-4a0f-b2aa-e309c1eb69f1.json and https://artists.proofprofile.net/proofs/artist/37df3874-919a-4a0f-b2aa-e309c1eb69f1.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82d940f148ff63596e0bb9c4cf7954e92168bb6afbb58a960ae3360320e9f33. 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/TCAAZ1172574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbe6bb68cf6c9d93805f0c6e33226e06535f5d44fd07a36d3ad33a15dd08e5b. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TCAAZ1172587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc3c21daf9d3dec045711bdce5badb19aa0f2d4da71d088a921645fd5909888. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAAZ1172592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee670b258bd2c7b605923e093eb19fceb8f349bb7210ea4e2b1d6289180422c. 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/TCAAZ1172593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faf25bf24e2a9aeaa523859f877b1edb15be57126682b76aa2865d83e0439a4. 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/TCAAZ1172597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab86a9c8eaad3020f63f240d740d4afd5fec96d0554b2cb9601dd72adf21fd1. 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/TCAAZ1172599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57404f4a142304105b8c9cbf4c15f60fddb354ebdfe8eb5b3c0ea3c4362bbb2b. 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/TCAAZ1172609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cdf2723638f6cca757a621b40d6d200eec452db19043f797b412d1453698ee. 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/TCAAZ1172612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46ccc01098fb7d138319f8b5bb74604f05c025d07788aca27cd92c750283778. 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/TCAAZ1172623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7516e56ad47a0731c60a4138df41064f9f251fe4df524dc54028e7d3fe35c21d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAAZ1172628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626202221c75e1282737b5f058f54f0d473fc0601051036c6de88fd87da8a4d7. 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/TCAAZ1172652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2605d6de82da3b6266723b1b8c89997cee961709bbcd796dc33793e2f2299ab4. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/TCAAZ1172596.
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 0xb9d2e18373115e99f84791da592198ed444927486c344c7ba0a5ab3ce7c3ee75. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/TCAAZ1172605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95621a05a709c97a28d1af0af266098ae1d679d1cead21e4a6eebdb616a82b57. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/TCAAZ1172613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec33743a71bc6d6f5dc546ee6a08c72530da019dd1128a272795ba90f2c5b6c1. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/TCAAZ1172617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c261dd071f6200a279402515734e462a1a5ef0082f41d4155cb3b3083dd689. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/TCAAZ1172626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e4d447062d323a9bd3341fc304f367d1ea88c5fac0770081e78ad823f17c52. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCAAZ1172629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce05f4994007ce97c3f7722abaff460a46f078f940794f31a4a2f61979067ab9. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCAAZ1172634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b6728ba31c02ad000af866e3fd7f5dd51c587e5becf04692e08f1a042e8794. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCAAZ1172637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbaa1253f30236358cf15e327d2c2fd42e8cd3d2da87b1acc8026df7ba60116. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/TCAAZ1172657.
A Sacred Music Celebration: Greek Orthodoxy and Turkish Sufism
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81734d3d986cece09a546c82f9878ab92e274122c742ffe3b3d28ad69e87776f. 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/TCAAZ1172424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0526beb7e7f1fdd86206bd130dac53d1c0394376fa6e2c7f2f46f1c1666e51a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAAZ1172524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f2f458710a53c4c48650d3ba07630d4f056c27fcb8a117d6a0c5b3ae4bdb56. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/TCAAZ1172438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a01b553da42191daa928b6c5d9bbb44fe80777b924ae66199fb376163614e8. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TCAAZ1172490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8207a39ac53f270eb2802f49e2c9344b7845178de4c46b6b10fcfb98d0e1c38. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/TCAAZ1172494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe72efe2df7df4cb5652c1c1ea6e3558f43a8df5bd11777a6cf30af5b53e2f2. 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/TCAAZ1172505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8549cb7580cb50f5600f37ca5c8cd6398670955aabb93935901dac017a9f84. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCAAZ1172519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25107ed2a002c36a9cd87ed4df6227e7dcb3bd69183eb7c8717d5cfa3f4e6db8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/TCAAZ1172526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8efa08285c0d41583ab9d709531733aebfb4c9d2ae307d0db3b12548ebb469b. 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/TCAAZ1173116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0fce40cb25aed8d3db79a11ef37f9abfb42be131f6fd24035283c27565fa8e. 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/TCAAZ1173151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8171eed881b20358e9609ea81bced479200e623189ef6bb2882b9335eb08ce3e. 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/TCAAZ1173152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9e7ad5992b44909712270b565be0f60b2d420663b991510a649c74d2aed22d. 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/TCAAZ1173128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd87cf74c8f1a0d4a3bbfff94844ea64e12cab7eacdb17f23ac8c6e80adc9bd2. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/TCAAZ1173148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd0fc9bf46254668023acca497ef133072e1e87e609359a2d7d96e7acaf6984. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/TCAAZ1173197.