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 0x11424b586e4db4a05400e7e1d457661217d9515a1783bc85b1019fd383ba9a7e. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84f37a19-35ed-4527-8300-46ce281f7405.json and https://artists.proofprofile.net/proofs/artist/84f37a19-35ed-4527-8300-46ce281f7405.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 0xca10f078063c73222166525a4d8d448a81b80839c9c0d4fccc3642e53c8c44e0. 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/TWKS52300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c75e62ab09616ac9e60dafde1218b186249d86b3a68740d4aa1527497f1a4d9. 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/TWKS52300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bcaef17a8cc4bf3a077b011ac58d2671a984e7335f1911ec506461bf8ea4d1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TWKS52300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cfb2c7ab98e5b6517d5a57c374be65a53a264708d28a49bee269b3719a09e6. 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/TWKS52300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eedaa934c9d441dc6ece6374e9cd607697e5f1b0e4c0cd40f469e7d7e72681. 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/TWKS52300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd0a779de43776612deca8d71536723ed36202e5aefc51e48ae2648d33e21c9. 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/TWKS52300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d41532d5e70d47d674d381bbe18b1de25fd7397f84368b3270690dec8a3eb42. 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/TWKS52300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4678ae437473fba790c8e1266625e6f7fdce2336a5fc3b209c62054ce05acd79. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TWHM72210001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c9dc0a2fc6708bc96b9be72e6beda0afe8e42f4496c09956c15fce8441ab90. 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/TWHM72210002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d36a786628222c8ef8383c3cd53ac2d133c0e6508ce18a51d5380d20b651cd. 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/TWHM72210003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17baaf6812749456afa7da7e3c6f65738fb8c94ab8890b8e531b9528c3c1e939. 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/TWHM72210004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e3a455c8f4b4bcb9bac92cdb8c265b7c507e6a0617c591f9b341c3d9bc53b5. 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/TWHM72210005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a162cc12759a7e3446aed09c07bff403b3dd7c4192203d6c4cdc4e106f557b. 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/TWHM72210006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bacb2ba890f282b1cb9364a7fd4a555734f46b0daa59b1bd75cf0d0ae3c4e0e. 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/TWHM72210007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443fafe30147378d07b5642d52eb40f5fdb0fbb5612ec220a562a593c47ef1d4. 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/TWHM72210010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7a7adb5e3172bb341d6d5ddef75797830a1ce0e86a7c36c461d4ea87be505d. 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/TWKF12300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96abfc0c2d381f6f7d46a8cac7f2e97511aa3d87c573a9a7f458875b0710446c. 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/TWKF12300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198700645759eabe7d7e8448a323d6b8927227c22250e156c57b8b4622f1111b. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/TWKF12300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0347f21e1bf41ca69006721971510898e5140fd4917f11dc7edde8f8016bd435. 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/TWKF12300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316a6487e310b86021592b3d1b8ed313393a70bf8952b06bf55be814cf787965. 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/TWKF12300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9648644bff7eb13fdccc684abe5c360bbdedc3b9f113c52e15de7aad58982902. 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/TWKF12300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fa7236728126f643220dd4ca2354ad5c817014ae02aa29bc9243ecefca26e5. 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/TWHM72100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a38a8625593208842d634306b9634fecaae40e078ad329c6a32c7368f7c3ec. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWHM72100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89abb403927746c88e7a02b48f896d3b58ec7c038a80d5474aaac64baf79e9b. 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/TWHM72100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bf2d2ad15c01ea9c42d4341492e71fd2c1daa63ae65ffbc64f530aa8af3116. 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/TWHM72100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c02b69389f2f7ec00ba2eafcba585e5d8242c4fc0b747effd0a984924b6965c. 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/TWHM72100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559633dfc3a3d6f5fbf45d759f394ce0a1925bdc033f441e52cec65ea0dc8a82. 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/TWHM72100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f49f37f55580eef739de28a6ae2e05d7ef8753c5457435a1f8f5ac7aafdb5ed. 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/TWHM72100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3761ee3d8f14ce01c55de1e9dedc3deff769fc4d411fa667db3401d017fb23fa. 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/TWHM72100010.
Tears in Water (a tucu saqemauqaung aken)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c689876976d9b09851783363fcce9ab035255ce0e7fd66923c6ea9d9ce4ba9. 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/TWAE32401498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45215304c81fe956202b300cede06bd1da864ecc7817f3c7e58713bd3e9d2f85. 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/TWAE32400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0347f21e1bf41ca69006721971510898e5140fd4917f11dc7edde8f8016bd435. 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/TWKF12300106.