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 0xdba411e9b232923d3386474096004e4b39442908eaf771963be5e05b6b8cf931. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9e5c3f9-d4ef-41f9-ab21-7f811729db4d.json and https://artists.proofprofile.net/proofs/artist/d9e5c3f9-d4ef-41f9-ab21-7f811729db4d.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 0x56cda95f83bc574794d742b3b2fac9acf3fb8758260b60c56ae3e2b491d30421. 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/QZ9JZ1724983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4a9f49f53464e66c5f821a6a63de076c2ed46d7db8ea7b59cfaa793efd950a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ9JZ1724984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6a55fa2e8c00d02e4bd69aaa84de4e4ceeb3202e63241ac4ad0a043be781f7. 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/QZ9JZ1724985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862f4426401f04f57730c38454162213dd7aac9be80c11513269afc137725391. 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/QZ9JZ1724986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1e4093e55219eeb0c1e268258059c7e16fc4720083dba523570426dfb69306. 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/QZ9JZ1724987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabd6d61efcbbd501049058b523b813fb45fc240cec363281d89b4c01a75e84f. 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/QZ9JZ1724988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5e852b8f114ba8bd1c595f58679adf22e3808ef61e7a93a53f5cce8c693fea. 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/QZ9JZ1724989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e4ba7c2293f1f4c55492ae853138c84af5c0365857cea2fe30ff79cfbe2713. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ9JZ1724990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0642f6baee7ef9b6fbe833cb39b221ec8dcdcd53e76d7dac999aa3e0fd5f752. 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/QZ9JZ1724991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45cef396f5176aad404eddf7f4d26e8e4ffb804b50856a785e1b98a57975985. 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/QZ9JZ1724992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc079dd3addfeccea5b8f760c9476b5eca86fd897a00f2aaf4c9e3775058c117c. 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/QZ9JZ1724993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b770d54317a1d6f8b05426bf6cea62d117613765c2df919aae9ea53d77ba3a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ9JZ1724994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd136099e2144c13dcc740c80e2bc70c8ef19f9c8abddc7ae34f54c1f5d018882. 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/QZ9JZ1724995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4260c9e98871d2943f9d8e7779bd178161fc6a3c39887d0bc6e28581adec22f3. 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/QZ9JZ1724996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68124b1de67fd93550fd271a51ff7f28e44a2ee73d274d546bc456b803daa3b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ9JZ1724997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7582b7753d0561339967a99b8886be79e70841185cab50901e627e12dcd11e58. 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/QZ9JZ1724998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cc1a04bb533738ac548b0144d6abf371e9b45be4bb485818fd79360cd12c5b. 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/QZ9JZ1724999.
La Maqueta Del Nacimiento a la Muerte (Interludio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75e9fedd751f2e3765611643a7ab5811aa9b04a98cff1788b33d2e1a27420c0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ9JZ1725000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851c51d7645e7fd1985800a7febe9710c070c00ce7dda1ac39654a77a11f7de7. 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/QZ9JZ1725001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bf3a39dee8b154a8c557784980db8823319c113a36d13cf97108bbf0ff54b4. 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/QZ9JZ1725002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105e684d7d39e6abe7cfc859bb585dd0104a8dd42bf7b178c1c2256a5c2d62c3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ9JZ1725003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c1a09ad7adbb907ac172d79b86220787bdc012ce2003a97943a8786bd7a9cd. 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/QZ9JZ1725004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a517dc289375be1387768a4a99b510ddcd92d8619bf6ef1c855ba01741c6e50. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ9JZ1725005.