The Tolkien Ensemble (founded in 1995) is a Danish ensemble which created "the world's first complete musical interpretation of the poems and songs from The Lord of the Rings". They published four CDs
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 0x580d3e0de52df594f5d22f87ea4d71a8a0350ab612b6aaf5d38e594078d848fe. 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/e48f2731-d682-4220-bbfd-021086616928.json and https://artists.proofprofile.net/proofs/artist/e48f2731-d682-4220-bbfd-021086616928.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Lord Of The Rings - At Dawn In Rivendell
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 0xd7d9694aedb303ce0d34ba2fe0241b5528a078ae0ed80611dc27dc37e7b9f6c0. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/DEG730118001.
Tom Bombadil's Song, Hey Dol! Merry Dol!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d195ffab1c7aaab1d1f5e2a35a845ed49665e6080f42f407309525dfca813a. 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/DEG730118002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7523a69c1cd4adfffe7a148f9a234dd658dc67fc13712234ef095c2ffc3119. 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/DEG730118004.
The Best of the Tolkien Ensemble - The Lord of the Rings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c83cd29cc089690c4ad9ee7c52f3ca6058afceb6a6376d4644c3351af791f9c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USV351352496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adbf056aed95267703190056db5c7568ae757289fe23c5faefadffa6d77b387. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USV351352497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7ecd3289285bfd80622b91a40e0a377d16f8a40ffd643ffb50fa09fd76aa70. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:40:45Z), 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/USV351352498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9138eaeabcb4928f26af9ff0d41fddb6b8fd8e0b5681629b29951cae681b13ac. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USV351352499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c94f852e0c920b967122b72e123bfc678936895a9cf0ddce806ea0860e1e7e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:07:38Z), 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/USV351352500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca8b30e730844f99270bd3f102d1090ce2d69b53a3693ddd4491fb7f2bfb178. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USV351352506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a16c31904cee376002491959b42b17e8772a28f3a18678c58a789e0aebb8b44. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USV351352510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507b40ff14600247a1c684042377ebebdf6a2a390eef36734579b72ef0f6fd41. 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/QMDA61457772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb0f178496404e1d9a4b4ea9466d6c051acd2be64b60c87e3771c3fdacf8364. 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/QMDA61457773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8d234ade816b8e3d47994c21743f0505e2dd89f62ff606638fbc2f7acc8f80. 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/QMDA61457774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9423c301fdee17e71e4bdfc2c72a2dbd4f7f32b46fbcfcaa6880d46529b90303. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMDA61457775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576dadeb04ef1d1ef2c6411f58918da3c79c237546f9512b6c8245a42ca61cd5. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:41:42Z), 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/QMDA61457776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85873b3abcd6c65c29e146c236bfe1de29e68daed4f84694916d9e195c82ce70. 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/QMDA61457777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f9a20370929768f1ce4f92ca0770b7030541107024b7732ad862618c9b8f74. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMDA61457778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31696b485b46e7a5f4d5eb91852b5bf76c862af752b7f8826899dc9848823eff. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMDA61457780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493b51d362f76fd3b86c3698a4675c75eab2d262328af9b6af3eb62a8834d515. 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/QMDA61457781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7aed8be8e56cf2eb10654b9c11191a04488d1f2a0aeacbf4dc990db98bef13. 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/QMDA61457785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17300e5af9f440bb58bc6b3ad74db496fffc766f1926d6c44bc3899da50e8d15. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QMDA61457787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40082cfb14639adc635b622aa83b86f496fe739a8f768ce87a3fc30cfebbe29d. 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/QMDA61457788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87764160c277174fa0df8ea42cccbb433172aa68a66eee32ad352cc61b16032d. 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/QMDA61457789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa8211552b9a616bcbfbaf93c8e1e8db22350f44fe81325322853b32602ec4a. 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/QMDA61457790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a529a9f979edf7511f843cab8b7e9c3c915abb267e7d5a8db94d057bdae03f2. 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/QMDA61457791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb542c0a9c9203bfcbb7cc198e918c3d7246c044ee9e32509dcaba836cfe03c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QMDA61457784.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556a05f77bcfb13d5457017182d6bedd03db808f9f8a03667069a33b89b7c8c0. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QMDA61457779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac02cdb1e23d0b47e2e1528debc744ad1b1ac25c69fe11a95717c32ff634eea. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QMDA61457786.