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 0x3f53f3700dd18ec46a5fa376aabd0ccad164c268f57fa36803dd21344eb20404. 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/b8d6d9e0-a94a-4848-bd3d-9b4ffb8c9d09.json and https://artists.proofprofile.net/proofs/artist/b8d6d9e0-a94a-4848-bd3d-9b4ffb8c9d09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Las 100 Clasicas de La Música Catolica, Vol 2
Las 100 Clasicas de la Música Catolica, Vol 3
Las 100 Clásicas de la Música Católica, Vol 5
Las 100 Clasicas de la Música Catolica, Vol. 1
Las 100 Clásicas de la Música Católica, Vol 4
Sinfonías de Alabanza: Himnos y Coros Católicos
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 0x0177664bdde1651559b3d2f964c0d5aa097ff506baa80fea6c7872d9e78da183. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM3DF2247498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721d7750a912a0c5bc3ecd786a7751b49c9669915bb20b74f7bfd4187a7d89ff. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:40:27Z), 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/QM3DF2247507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe4b8da6fc0a55805743a89ebf60fc4fc538b9f02a8e0572210e184430cbbba. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:55:52Z), 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/QM3DF2247530.
Pistas Católicas Aclamación al Evangelio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6430661325c5127311e762397d4ef99d6d7a78dcf4432a3c1f66ac7ae79dfb5. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GBLFP2045620.
Pistas Católicas Preparación de los Dones
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e0c34b7c9cc92a0d35d0a764ba0cf32b852785c926e8787c78858cfcb79478. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:49:34Z), 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/GBLFP2045367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb285f60106f1bee9f1572de345e08af4840cebbf84c5abe5e4726a1bf7212e3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:17:47Z), 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/GBLFP2046307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9055eef6cc4cf675df7e0d9d5e4b25151c6297db16795cd29ac5d3e1ddc9c964. 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/GBLFP2045453.
Cantoral Católico Preparación de los Dones
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d03fb2becae572665d3178d0d4c6bac454845bbf6102b24d8b11ac939984c35. 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/GBLFP2045416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0613cabec8a3d7c6abb2873c08a1d9987312cebc03fdc953a0af54c2799a48ae. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLFP2045447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29ca98dbf204c8bf1017aaaedf6f03dab5f951bf65f1e13bd31fd352bd75aa5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBLFP2045440.
Cantoral Católico Aclamación al Evangelio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3eee17f70db514f3e97685e3d213960310ad3fa14bad0bea92e5f3ce90c5f1a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:23:08Z), 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/GBLFP2045462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9055eef6cc4cf675df7e0d9d5e4b25151c6297db16795cd29ac5d3e1ddc9c964. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:27:55Z), 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/GBLFP2045453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d03fb2becae572665d3178d0d4c6bac454845bbf6102b24d8b11ac939984c35. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:18:29Z), 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/GBLFP2045416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c57e8bf46954bb7ecd2f386327c872f3e5c0ad26d19af4531503c61081b8918. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:28:13Z), 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/GBLFP2045204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756e4a0dc6c6b57db654164032617b25526374b59ac5baf5e1e20bf6372550b8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBLFP2045194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d072775ac170a21cb4006ed5bddc64295518dfa25d388fa2fedfb430910c202. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBLFP2045660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3af24f7ec01db422a6dc9c2993a9d6dd1ec2029f4ab715fdefaeeecced6afb. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:26:30Z), 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/GBLFP2045650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd224cfcf52f2c0dfc399069c71214c395ac037ebdc1207f8f3c3e587d9a59f1f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBLFP2045257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd224cfcf52f2c0dfc399069c71214c395ac037ebdc1207f8f3c3e587d9a59f1f. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/GBLFP2045257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf53679adaf5e7a47841159b0c4283b7fe114400b8a8c9bf6dd28559e8f8630e. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:01:05Z), 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/GBLFP2045252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618b7d42ffc35727cfef8a8ca541fc4a508520ab4986c63a8cb104210c308708. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GXD7G2519146.