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 0x05a19cac67a10ec25dd7a3f3c69cabc324c3593d4ca0bdc7220c088fe5202e7c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ba13b56-982e-43b3-b25f-cef541e10195.json and https://artists.proofprofile.net/proofs/artist/6ba13b56-982e-43b3-b25f-cef541e10195.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Antología de las Sevillanas Desde 1964 al 2000, Vol. 3
Antología de las Sevillanas Desde 1964 al 2000, Vol. 1
Antología de las Sevillanas Desde 1964 al 2000, Vol. 2
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 0xcabaa7df1565c7c9748273a42070497ecab76d381d7c94a1c82c241f341edfda. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ESA031802134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d248b7a4271bd3baee37fd646e2d8bdfb71570a37fcdb0740cecb20bfb2f31d. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/ESA031802136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5ac59f702ffb71dd563fe1902df896a3e4bcce59f1453eeb12a5c84bcf5806. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:19Z), 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/ESA031802143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fd7cb3b94864e1e6580d60295d37b9ac5b5d902e692d9ed358cb7aaa9b0cdb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ESA031802145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7b6755049263236a7a897a08420cf32f555538481fb26d49effe8dedf02276. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:18:12Z), 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/ESA031802150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56dd222eef8776a4ffc267bfed2fad54c6271a1d6f50a45e964c1c62d5bbbe1. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T07:58:32Z), 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/ESA031802118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb393f8e0924e4ad3f5b445e8acb3d2052a1a59b5123e0b145858fba05362f669. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:08:26Z), 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/ESA031802119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd97e67939af0023d08d5ae61a081bdde61e7be037fdf8d5db69037f46df83c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:34:29Z), 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/ESA031802120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c53f015ccccca4e3bf2dd7b5a68cf17b6590fc57beedff7be965007f02a3d73. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/ESA031802122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe844efed32df42ed795c2839fcaffe6ed8944660431d7ed054aa8f7232de8bb4. 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/ESA031802124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3def50f5a42b412ed7d5414f6600243a0c51794f3eff5a7787cdf07338a586. 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/ESA031802130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe3db411b5dcc3ac7361efecae621631528df58fbeec109b2c308a388e131a3. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:54:16Z), 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/ESA031802131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ddbb1b471950d36ef23f4f95ca40cf2c86b8f40ce5d2f042bfe5b47b376122. 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/ESA031802103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539f43317238d964198a3563c6a5622cba7fccc4e52bdf558cf7e81b44fc91cf. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/ESA031802104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd8c7cc279e8ecd4e8201d5f90809421ce121874cada3abd1e6dfce0dfd17b4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:01:54Z), 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/ESA031802106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9be73f92ad3aea3f707ff934b790a51f76a7481a53576df0ca943063653fda. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ESA031802108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d460d6beaa99ec139e6a2cd69592acfdcfa4b5ce37782e3719c4de99d6ed2e8. 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/ESA031802110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfc529c0dbe101ef2529d7791826667bbb80e148575b7da097a64743af1a9a2. 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/ESA031802111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9697e89161ec53bf519e43c6b84cd1c87f3e3cbddcce7ce127beb24c6f41da8d. 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/ESA031802112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60187be1b4174e32fc587bf20d6779e3067cdb869452743ff4289447c03b00d2. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/ESA031802114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0474d27a8156f35f9129138ecff0da026fc85fec1150ccd31a2cfc1f501bdf96. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:40:31Z), 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/ESA031802115.