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 0x73c548dda53af631d974bacf8608208089e2dd466d596c202ac870d4b3019b5c. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/490e053d-e8ae-4e7f-b836-2d24c28c3452.json and https://artists.proofprofile.net/proofs/artist/490e053d-e8ae-4e7f-b836-2d24c28c3452.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Doxology / Come, Thou Fount Of Every Blessing
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 0x6c31789a04585b7d21917b03af1af83f2a196d5f0cd6b5bd764ab511e2066615. 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/TCACP1600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8462267d151ab132bc2f7346a553174d463a02884e60db622832f170a2572090. 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/TCACP1600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfae2a8555a2c2f70e7e4536e251bcad1412468168179744b624208be4fa77ca. 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/TCACP1600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246b92347fe3a4b000a2af66748a22fb0d0894c5800fe90914b708ee79dcaa8f. 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/TCACP1600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31681e9105d37dd8e727269d44de0d4faf8af8a49c16675785ec49b15e96de14. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TCACP1600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a5476e0f85dee44a2e5a633d202dfab3fc0b915dd69bf53faaecddcb8c4efa. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/TCACP1600043.
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
Songs from the Book of Ephesians, Volumes 1 & 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8170aa2b15ae08724f07f812e63b20e1cec99c03de6ce7988e383e7892ab07. 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/TCAEB1997148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad76b1bc28b05b0f503e885762332182379383c1e0ede07ec5963ba3fe72305a. 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/TCAEB1997245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ebef2fac3333b96e90e1e925c72be2bcc2cf48543f9011e396eeee1cbfe423. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCAEB1997127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5af82c43bebfec068ecb5587beb6a24d1b375d4fa1910832727b1f7f77cea9. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/TCAEB1997150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871cbd8564ea61d046075d0482ff2ff1ba5c9c500cc8538a6c7a4778bffb5eb3. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/TCAEB1997154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c66d50718a98da0d13cfb1878d0b5cf33b00dac797ad2cc6e167ca0aa928d4. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/TCAEB1997157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145e694a15e8d34507e0895050cd0cc9ad8c1eefbe6532e471dd49fdb6143bb5. 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/QZES52100253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4919f0a765e854af4cdfbfc653d30bc5cdba37dd9a223f8cbe2e2524ad933b8. 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/TCADR1817235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cf4ce131fdd3d6fc7319494f3c5d3ec60075b62ee8de9830417443ed6d6309. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCADR1817232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a96c2fe538abda1c8b85d0cbfa40b07cb8e5ecdee4f9cba2566454a72a9e84c. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/TCADR1817234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada2e4b74a5e2d3304220ac926a0d309da8eadc19a0201995a020668d2feccb6. 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/TCADR1817237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0586043183647c28b91d72aef642f601eb76f4fa7e44c87a4c247932079ddbcd. 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/TCADR1817239.